Determinação das constantes K e alfa da equação de Mark-Houwink de poli(p-acetóxiestireno) Determination of K and alpha constants of the Mark-Houwink equation of poly(p-acetoxystyrene)

O conceito de volume hidrodinâmico pode ser utilizado efetivamente com cromatografia de permeação em gel (GPC) e dados de viscosidade para calcular a massa molar de uma variedade de polímeros. Neste trabalho, as constantes da equação de Mark-Houwink para os homopolímeros de poli(p-acetóxiestireno) (...
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Gespeichert in:

Autor*in:	José C. Moreira [verfasserIn] Isabel F. da Silva [verfasserIn] Shu Hui Wang [verfasserIn] Debora T. Balogh [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch ; Portugiesisch

Erschienen:	2004

Schlagwörter:	Viscosidade intrínseca massa molar poli(p-acetóxiestireno) síntese Intrinsic viscosity molar mass p-acetoxystyrene synthesis

Übergeordnetes Werk:	In: Polímeros - Associação Brasileira de Polímeros, 2004, 14(2004), 2, Seite 80-82
Übergeordnetes Werk:	volume:14 ; year:2004 ; number:2 ; pages:80-82

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc Journal toc

DOI / URN:	10.1590/S0104-14282004000200010

Katalog-ID:	DOAJ038635828

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245	1	0	\|a Determinação das constantes K e alfa da equação de Mark-Houwink de poli(p-acetóxiestireno) Determination of K and alpha constants of the Mark-Houwink equation of poly(p-acetoxystyrene)
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520			\|a O conceito de volume hidrodinâmico pode ser utilizado efetivamente com cromatografia de permeação em gel (GPC) e dados de viscosidade para calcular a massa molar de uma variedade de polímeros. Neste trabalho, as constantes da equação de Mark-Houwink para os homopolímeros de poli(p-acetóxiestireno) (PASt) foram determinadas pela correlação dos valores de massa molar ponderal média (<IMG SRC="/img/revistas/po/v14n2/21574s1.gif"<) determinados por cromatografia de permeação em gel (GPC) relativos a padrões de poliestireno, com as correspondentes medidas de viscosidade intrínseca [<IMG SRC="/img/revistas/po/v14n2/21574s3.gif"<] em soluções de THF a 25 °C. A massa molar viscosimétrica média (<IMG SRC="/img/revistas/po/v14n2/21574s2.gif"<) de qualquer amostra de PASt desconhecida pode ser calculada medindo-se a viscosidade intrínseca da amostra, e aplicando-se então a equação de Mark-Houwink, utilizando-se os valores de K e alfa calculados, 1,442 x 10-2 g/ml e 0,695, respectivamente.<br<The hydrodynamic volume concept can be used effectively with gel-permeation chromatography (GPC) and viscosity data to estimate the molecular weight of a variety of polymers. In this work, the Mark-Houwink coefficients (alpha and K) for the poly(p-acetoxystyrene) homopolymers (PASt) were determined by correlating their weight average molecular weight (<IMG SRC="/img/revistas/po/v14n2/21574s1.gif"<) values, determined by gel-permeation chromatography (GPC) relative to polystyrene standards, with their measured intrinsic viscosity values ([<IMG SRC="/img/revistas/po/v14n2/21574s3.gif"<]). The <IMG SRC="/img/revistas/po/v14n2/21574s2.gif"<of any unknown PASt sample may be estimated by first measuring the sample's intrinsic viscosity, and then applying these alpha and K values with the Mark-Houwink equation.
650		4	\|a Viscosidade intrínseca
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650		4	\|a síntese
650		4	\|a Intrinsic viscosity
650		4	\|a molar mass
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650		4	\|a synthesis
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allfields	10.1590/S0104-14282004000200010 doi (DE-627)DOAJ038635828 (DE-599)DOAJ6d8c84fcfae14ff6b4253e7416cc7177 DE-627 ger DE-627 rakwb eng por TP1-1185 José C. Moreira verfasserin aut Determinação das constantes K e alfa da equação de Mark-Houwink de poli(p-acetóxiestireno) Determination of K and alpha constants of the Mark-Houwink equation of poly(p-acetoxystyrene) 2004 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier O conceito de volume hidrodinâmico pode ser utilizado efetivamente com cromatografia de permeação em gel (GPC) e dados de viscosidade para calcular a massa molar de uma variedade de polímeros. Neste trabalho, as constantes da equação de Mark-Houwink para os homopolímeros de poli(p-acetóxiestireno) (PASt) foram determinadas pela correlação dos valores de massa molar ponderal média (<IMG SRC="/img/revistas/po/v14n2/21574s1.gif"<) determinados por cromatografia de permeação em gel (GPC) relativos a padrões de poliestireno, com as correspondentes medidas de viscosidade intrínseca [<IMG SRC="/img/revistas/po/v14n2/21574s3.gif"<] em soluções de THF a 25 °C. A massa molar viscosimétrica média (<IMG SRC="/img/revistas/po/v14n2/21574s2.gif"<) de qualquer amostra de PASt desconhecida pode ser calculada medindo-se a viscosidade intrínseca da amostra, e aplicando-se então a equação de Mark-Houwink, utilizando-se os valores de K e alfa calculados, 1,442 x 10-2 g/ml e 0,695, respectivamente.<br<The hydrodynamic volume concept can be used effectively with gel-permeation chromatography (GPC) and viscosity data to estimate the molecular weight of a variety of polymers. In this work, the Mark-Houwink coefficients (alpha and K) for the poly(p-acetoxystyrene) homopolymers (PASt) were determined by correlating their weight average molecular weight (<IMG SRC="/img/revistas/po/v14n2/21574s1.gif"<) values, determined by gel-permeation chromatography (GPC) relative to polystyrene standards, with their measured intrinsic viscosity values ([<IMG SRC="/img/revistas/po/v14n2/21574s3.gif"<]). The <IMG SRC="/img/revistas/po/v14n2/21574s2.gif"<of any unknown PASt sample may be estimated by first measuring the sample's intrinsic viscosity, and then applying these alpha and K values with the Mark-Houwink equation. Viscosidade intrínseca massa molar poli(p-acetóxiestireno) síntese Intrinsic viscosity molar mass p-acetoxystyrene synthesis Chemical technology Isabel F. da Silva verfasserin aut Shu Hui Wang verfasserin aut Debora T. Balogh verfasserin aut In Polímeros Associação Brasileira de Polímeros, 2004 14(2004), 2, Seite 80-82 (DE-627)331764148 (DE-600)2053218-0 16785169 nnns volume:14 year:2004 number:2 pages:80-82 https://doi.org/10.1590/S0104-14282004000200010 kostenfrei https://doaj.org/article/6d8c84fcfae14ff6b4253e7416cc7177 kostenfrei http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282004000200010 kostenfrei https://doaj.org/toc/0104-1428 Journal toc kostenfrei https://doaj.org/toc/1678-5169 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 14 2004 2 80-82
spelling	10.1590/S0104-14282004000200010 doi (DE-627)DOAJ038635828 (DE-599)DOAJ6d8c84fcfae14ff6b4253e7416cc7177 DE-627 ger DE-627 rakwb eng por TP1-1185 José C. Moreira verfasserin aut Determinação das constantes K e alfa da equação de Mark-Houwink de poli(p-acetóxiestireno) Determination of K and alpha constants of the Mark-Houwink equation of poly(p-acetoxystyrene) 2004 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier O conceito de volume hidrodinâmico pode ser utilizado efetivamente com cromatografia de permeação em gel (GPC) e dados de viscosidade para calcular a massa molar de uma variedade de polímeros. Neste trabalho, as constantes da equação de Mark-Houwink para os homopolímeros de poli(p-acetóxiestireno) (PASt) foram determinadas pela correlação dos valores de massa molar ponderal média (<IMG SRC="/img/revistas/po/v14n2/21574s1.gif"<) determinados por cromatografia de permeação em gel (GPC) relativos a padrões de poliestireno, com as correspondentes medidas de viscosidade intrínseca [<IMG SRC="/img/revistas/po/v14n2/21574s3.gif"<] em soluções de THF a 25 °C. A massa molar viscosimétrica média (<IMG SRC="/img/revistas/po/v14n2/21574s2.gif"<) de qualquer amostra de PASt desconhecida pode ser calculada medindo-se a viscosidade intrínseca da amostra, e aplicando-se então a equação de Mark-Houwink, utilizando-se os valores de K e alfa calculados, 1,442 x 10-2 g/ml e 0,695, respectivamente.<br<The hydrodynamic volume concept can be used effectively with gel-permeation chromatography (GPC) and viscosity data to estimate the molecular weight of a variety of polymers. In this work, the Mark-Houwink coefficients (alpha and K) for the poly(p-acetoxystyrene) homopolymers (PASt) were determined by correlating their weight average molecular weight (<IMG SRC="/img/revistas/po/v14n2/21574s1.gif"<) values, determined by gel-permeation chromatography (GPC) relative to polystyrene standards, with their measured intrinsic viscosity values ([<IMG SRC="/img/revistas/po/v14n2/21574s3.gif"<]). The <IMG SRC="/img/revistas/po/v14n2/21574s2.gif"<of any unknown PASt sample may be estimated by first measuring the sample's intrinsic viscosity, and then applying these alpha and K values with the Mark-Houwink equation. Viscosidade intrínseca massa molar poli(p-acetóxiestireno) síntese Intrinsic viscosity molar mass p-acetoxystyrene synthesis Chemical technology Isabel F. da Silva verfasserin aut Shu Hui Wang verfasserin aut Debora T. Balogh verfasserin aut In Polímeros Associação Brasileira de Polímeros, 2004 14(2004), 2, Seite 80-82 (DE-627)331764148 (DE-600)2053218-0 16785169 nnns volume:14 year:2004 number:2 pages:80-82 https://doi.org/10.1590/S0104-14282004000200010 kostenfrei https://doaj.org/article/6d8c84fcfae14ff6b4253e7416cc7177 kostenfrei http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282004000200010 kostenfrei https://doaj.org/toc/0104-1428 Journal toc kostenfrei https://doaj.org/toc/1678-5169 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 14 2004 2 80-82
allfields_unstemmed	10.1590/S0104-14282004000200010 doi (DE-627)DOAJ038635828 (DE-599)DOAJ6d8c84fcfae14ff6b4253e7416cc7177 DE-627 ger DE-627 rakwb eng por TP1-1185 José C. Moreira verfasserin aut Determinação das constantes K e alfa da equação de Mark-Houwink de poli(p-acetóxiestireno) Determination of K and alpha constants of the Mark-Houwink equation of poly(p-acetoxystyrene) 2004 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier O conceito de volume hidrodinâmico pode ser utilizado efetivamente com cromatografia de permeação em gel (GPC) e dados de viscosidade para calcular a massa molar de uma variedade de polímeros. Neste trabalho, as constantes da equação de Mark-Houwink para os homopolímeros de poli(p-acetóxiestireno) (PASt) foram determinadas pela correlação dos valores de massa molar ponderal média (<IMG SRC="/img/revistas/po/v14n2/21574s1.gif"<) determinados por cromatografia de permeação em gel (GPC) relativos a padrões de poliestireno, com as correspondentes medidas de viscosidade intrínseca [<IMG SRC="/img/revistas/po/v14n2/21574s3.gif"<] em soluções de THF a 25 °C. A massa molar viscosimétrica média (<IMG SRC="/img/revistas/po/v14n2/21574s2.gif"<) de qualquer amostra de PASt desconhecida pode ser calculada medindo-se a viscosidade intrínseca da amostra, e aplicando-se então a equação de Mark-Houwink, utilizando-se os valores de K e alfa calculados, 1,442 x 10-2 g/ml e 0,695, respectivamente.<br<The hydrodynamic volume concept can be used effectively with gel-permeation chromatography (GPC) and viscosity data to estimate the molecular weight of a variety of polymers. In this work, the Mark-Houwink coefficients (alpha and K) for the poly(p-acetoxystyrene) homopolymers (PASt) were determined by correlating their weight average molecular weight (<IMG SRC="/img/revistas/po/v14n2/21574s1.gif"<) values, determined by gel-permeation chromatography (GPC) relative to polystyrene standards, with their measured intrinsic viscosity values ([<IMG SRC="/img/revistas/po/v14n2/21574s3.gif"<]). The <IMG SRC="/img/revistas/po/v14n2/21574s2.gif"<of any unknown PASt sample may be estimated by first measuring the sample's intrinsic viscosity, and then applying these alpha and K values with the Mark-Houwink equation. Viscosidade intrínseca massa molar poli(p-acetóxiestireno) síntese Intrinsic viscosity molar mass p-acetoxystyrene synthesis Chemical technology Isabel F. da Silva verfasserin aut Shu Hui Wang verfasserin aut Debora T. Balogh verfasserin aut In Polímeros Associação Brasileira de Polímeros, 2004 14(2004), 2, Seite 80-82 (DE-627)331764148 (DE-600)2053218-0 16785169 nnns volume:14 year:2004 number:2 pages:80-82 https://doi.org/10.1590/S0104-14282004000200010 kostenfrei https://doaj.org/article/6d8c84fcfae14ff6b4253e7416cc7177 kostenfrei http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282004000200010 kostenfrei https://doaj.org/toc/0104-1428 Journal toc kostenfrei https://doaj.org/toc/1678-5169 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 14 2004 2 80-82
allfieldsGer	10.1590/S0104-14282004000200010 doi (DE-627)DOAJ038635828 (DE-599)DOAJ6d8c84fcfae14ff6b4253e7416cc7177 DE-627 ger DE-627 rakwb eng por TP1-1185 José C. Moreira verfasserin aut Determinação das constantes K e alfa da equação de Mark-Houwink de poli(p-acetóxiestireno) Determination of K and alpha constants of the Mark-Houwink equation of poly(p-acetoxystyrene) 2004 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier O conceito de volume hidrodinâmico pode ser utilizado efetivamente com cromatografia de permeação em gel (GPC) e dados de viscosidade para calcular a massa molar de uma variedade de polímeros. Neste trabalho, as constantes da equação de Mark-Houwink para os homopolímeros de poli(p-acetóxiestireno) (PASt) foram determinadas pela correlação dos valores de massa molar ponderal média (<IMG SRC="/img/revistas/po/v14n2/21574s1.gif"<) determinados por cromatografia de permeação em gel (GPC) relativos a padrões de poliestireno, com as correspondentes medidas de viscosidade intrínseca [<IMG SRC="/img/revistas/po/v14n2/21574s3.gif"<] em soluções de THF a 25 °C. A massa molar viscosimétrica média (<IMG SRC="/img/revistas/po/v14n2/21574s2.gif"<) de qualquer amostra de PASt desconhecida pode ser calculada medindo-se a viscosidade intrínseca da amostra, e aplicando-se então a equação de Mark-Houwink, utilizando-se os valores de K e alfa calculados, 1,442 x 10-2 g/ml e 0,695, respectivamente.<br<The hydrodynamic volume concept can be used effectively with gel-permeation chromatography (GPC) and viscosity data to estimate the molecular weight of a variety of polymers. In this work, the Mark-Houwink coefficients (alpha and K) for the poly(p-acetoxystyrene) homopolymers (PASt) were determined by correlating their weight average molecular weight (<IMG SRC="/img/revistas/po/v14n2/21574s1.gif"<) values, determined by gel-permeation chromatography (GPC) relative to polystyrene standards, with their measured intrinsic viscosity values ([<IMG SRC="/img/revistas/po/v14n2/21574s3.gif"<]). The <IMG SRC="/img/revistas/po/v14n2/21574s2.gif"<of any unknown PASt sample may be estimated by first measuring the sample's intrinsic viscosity, and then applying these alpha and K values with the Mark-Houwink equation. Viscosidade intrínseca massa molar poli(p-acetóxiestireno) síntese Intrinsic viscosity molar mass p-acetoxystyrene synthesis Chemical technology Isabel F. da Silva verfasserin aut Shu Hui Wang verfasserin aut Debora T. Balogh verfasserin aut In Polímeros Associação Brasileira de Polímeros, 2004 14(2004), 2, Seite 80-82 (DE-627)331764148 (DE-600)2053218-0 16785169 nnns volume:14 year:2004 number:2 pages:80-82 https://doi.org/10.1590/S0104-14282004000200010 kostenfrei https://doaj.org/article/6d8c84fcfae14ff6b4253e7416cc7177 kostenfrei http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282004000200010 kostenfrei https://doaj.org/toc/0104-1428 Journal toc kostenfrei https://doaj.org/toc/1678-5169 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 14 2004 2 80-82
allfieldsSound	10.1590/S0104-14282004000200010 doi (DE-627)DOAJ038635828 (DE-599)DOAJ6d8c84fcfae14ff6b4253e7416cc7177 DE-627 ger DE-627 rakwb eng por TP1-1185 José C. Moreira verfasserin aut Determinação das constantes K e alfa da equação de Mark-Houwink de poli(p-acetóxiestireno) Determination of K and alpha constants of the Mark-Houwink equation of poly(p-acetoxystyrene) 2004 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier O conceito de volume hidrodinâmico pode ser utilizado efetivamente com cromatografia de permeação em gel (GPC) e dados de viscosidade para calcular a massa molar de uma variedade de polímeros. Neste trabalho, as constantes da equação de Mark-Houwink para os homopolímeros de poli(p-acetóxiestireno) (PASt) foram determinadas pela correlação dos valores de massa molar ponderal média (<IMG SRC="/img/revistas/po/v14n2/21574s1.gif"<) determinados por cromatografia de permeação em gel (GPC) relativos a padrões de poliestireno, com as correspondentes medidas de viscosidade intrínseca [<IMG SRC="/img/revistas/po/v14n2/21574s3.gif"<] em soluções de THF a 25 °C. A massa molar viscosimétrica média (<IMG SRC="/img/revistas/po/v14n2/21574s2.gif"<) de qualquer amostra de PASt desconhecida pode ser calculada medindo-se a viscosidade intrínseca da amostra, e aplicando-se então a equação de Mark-Houwink, utilizando-se os valores de K e alfa calculados, 1,442 x 10-2 g/ml e 0,695, respectivamente.<br<The hydrodynamic volume concept can be used effectively with gel-permeation chromatography (GPC) and viscosity data to estimate the molecular weight of a variety of polymers. In this work, the Mark-Houwink coefficients (alpha and K) for the poly(p-acetoxystyrene) homopolymers (PASt) were determined by correlating their weight average molecular weight (<IMG SRC="/img/revistas/po/v14n2/21574s1.gif"<) values, determined by gel-permeation chromatography (GPC) relative to polystyrene standards, with their measured intrinsic viscosity values ([<IMG SRC="/img/revistas/po/v14n2/21574s3.gif"<]). The <IMG SRC="/img/revistas/po/v14n2/21574s2.gif"<of any unknown PASt sample may be estimated by first measuring the sample's intrinsic viscosity, and then applying these alpha and K values with the Mark-Houwink equation. Viscosidade intrínseca massa molar poli(p-acetóxiestireno) síntese Intrinsic viscosity molar mass p-acetoxystyrene synthesis Chemical technology Isabel F. da Silva verfasserin aut Shu Hui Wang verfasserin aut Debora T. Balogh verfasserin aut In Polímeros Associação Brasileira de Polímeros, 2004 14(2004), 2, Seite 80-82 (DE-627)331764148 (DE-600)2053218-0 16785169 nnns volume:14 year:2004 number:2 pages:80-82 https://doi.org/10.1590/S0104-14282004000200010 kostenfrei https://doaj.org/article/6d8c84fcfae14ff6b4253e7416cc7177 kostenfrei http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282004000200010 kostenfrei https://doaj.org/toc/0104-1428 Journal toc kostenfrei https://doaj.org/toc/1678-5169 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 14 2004 2 80-82
language	English Portuguese
source	In Polímeros 14(2004), 2, Seite 80-82 volume:14 year:2004 number:2 pages:80-82
sourceStr	In Polímeros 14(2004), 2, Seite 80-82 volume:14 year:2004 number:2 pages:80-82
format_phy_str_mv	Article
institution	findex.gbv.de
topic_facet	Viscosidade intrínseca massa molar poli(p-acetóxiestireno) síntese Intrinsic viscosity molar mass p-acetoxystyrene synthesis Chemical technology
isfreeaccess_bool	true
container_title	Polímeros
authorswithroles_txt_mv	José C. Moreira @@aut@@ Isabel F. da Silva @@aut@@ Shu Hui Wang @@aut@@ Debora T. Balogh @@aut@@
publishDateDaySort_date	2004-01-01T00:00:00Z
hierarchy_top_id	331764148
id	DOAJ038635828
language_de	englisch portugiesisch
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callnumber-first	T - Technology
author	José C. Moreira
spellingShingle	José C. Moreira misc TP1-1185 misc Viscosidade intrínseca misc massa molar misc poli(p-acetóxiestireno) misc síntese misc Intrinsic viscosity misc molar mass misc p-acetoxystyrene misc synthesis misc Chemical technology Determinação das constantes K e alfa da equação de Mark-Houwink de poli(p-acetóxiestireno) Determination of K and alpha constants of the Mark-Houwink equation of poly(p-acetoxystyrene)
authorStr	José C. Moreira
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topic_title	TP1-1185 Determinação das constantes K e alfa da equação de Mark-Houwink de poli(p-acetóxiestireno) Determination of K and alpha constants of the Mark-Houwink equation of poly(p-acetoxystyrene) Viscosidade intrínseca massa molar poli(p-acetóxiestireno) síntese Intrinsic viscosity molar mass p-acetoxystyrene synthesis
topic	misc TP1-1185 misc Viscosidade intrínseca misc massa molar misc poli(p-acetóxiestireno) misc síntese misc Intrinsic viscosity misc molar mass misc p-acetoxystyrene misc synthesis misc Chemical technology
topic_unstemmed	misc TP1-1185 misc Viscosidade intrínseca misc massa molar misc poli(p-acetóxiestireno) misc síntese misc Intrinsic viscosity misc molar mass misc p-acetoxystyrene misc synthesis misc Chemical technology
topic_browse	misc TP1-1185 misc Viscosidade intrínseca misc massa molar misc poli(p-acetóxiestireno) misc síntese misc Intrinsic viscosity misc molar mass misc p-acetoxystyrene misc synthesis misc Chemical technology
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title	Determinação das constantes K e alfa da equação de Mark-Houwink de poli(p-acetóxiestireno) Determination of K and alpha constants of the Mark-Houwink equation of poly(p-acetoxystyrene)
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title_full	Determinação das constantes K e alfa da equação de Mark-Houwink de poli(p-acetóxiestireno) Determination of K and alpha constants of the Mark-Houwink equation of poly(p-acetoxystyrene)
author_sort	José C. Moreira
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author_browse	José C. Moreira Isabel F. da Silva Shu Hui Wang Debora T. Balogh
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class	TP1-1185
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author-letter	José C. Moreira
doi_str_mv	10.1590/S0104-14282004000200010
author2-role	verfasserin
title_sort	determinação das constantes k e alfa da equação de mark-houwink de poli(p-acetóxiestireno) determination of k and alpha constants of the mark-houwink equation of poly(p-acetoxystyrene)
callnumber	TP1-1185
title_auth	Determinação das constantes K e alfa da equação de Mark-Houwink de poli(p-acetóxiestireno) Determination of K and alpha constants of the Mark-Houwink equation of poly(p-acetoxystyrene)
abstract	O conceito de volume hidrodinâmico pode ser utilizado efetivamente com cromatografia de permeação em gel (GPC) e dados de viscosidade para calcular a massa molar de uma variedade de polímeros. Neste trabalho, as constantes da equação de Mark-Houwink para os homopolímeros de poli(p-acetóxiestireno) (PASt) foram determinadas pela correlação dos valores de massa molar ponderal média (<IMG SRC="/img/revistas/po/v14n2/21574s1.gif"<) determinados por cromatografia de permeação em gel (GPC) relativos a padrões de poliestireno, com as correspondentes medidas de viscosidade intrínseca [<IMG SRC="/img/revistas/po/v14n2/21574s3.gif"<] em soluções de THF a 25 °C. A massa molar viscosimétrica média (<IMG SRC="/img/revistas/po/v14n2/21574s2.gif"<) de qualquer amostra de PASt desconhecida pode ser calculada medindo-se a viscosidade intrínseca da amostra, e aplicando-se então a equação de Mark-Houwink, utilizando-se os valores de K e alfa calculados, 1,442 x 10-2 g/ml e 0,695, respectivamente.<br<The hydrodynamic volume concept can be used effectively with gel-permeation chromatography (GPC) and viscosity data to estimate the molecular weight of a variety of polymers. In this work, the Mark-Houwink coefficients (alpha and K) for the poly(p-acetoxystyrene) homopolymers (PASt) were determined by correlating their weight average molecular weight (<IMG SRC="/img/revistas/po/v14n2/21574s1.gif"<) values, determined by gel-permeation chromatography (GPC) relative to polystyrene standards, with their measured intrinsic viscosity values ([<IMG SRC="/img/revistas/po/v14n2/21574s3.gif"<]). The <IMG SRC="/img/revistas/po/v14n2/21574s2.gif"<of any unknown PASt sample may be estimated by first measuring the sample's intrinsic viscosity, and then applying these alpha and K values with the Mark-Houwink equation.
abstractGer	O conceito de volume hidrodinâmico pode ser utilizado efetivamente com cromatografia de permeação em gel (GPC) e dados de viscosidade para calcular a massa molar de uma variedade de polímeros. Neste trabalho, as constantes da equação de Mark-Houwink para os homopolímeros de poli(p-acetóxiestireno) (PASt) foram determinadas pela correlação dos valores de massa molar ponderal média (<IMG SRC="/img/revistas/po/v14n2/21574s1.gif"<) determinados por cromatografia de permeação em gel (GPC) relativos a padrões de poliestireno, com as correspondentes medidas de viscosidade intrínseca [<IMG SRC="/img/revistas/po/v14n2/21574s3.gif"<] em soluções de THF a 25 °C. A massa molar viscosimétrica média (<IMG SRC="/img/revistas/po/v14n2/21574s2.gif"<) de qualquer amostra de PASt desconhecida pode ser calculada medindo-se a viscosidade intrínseca da amostra, e aplicando-se então a equação de Mark-Houwink, utilizando-se os valores de K e alfa calculados, 1,442 x 10-2 g/ml e 0,695, respectivamente.<br<The hydrodynamic volume concept can be used effectively with gel-permeation chromatography (GPC) and viscosity data to estimate the molecular weight of a variety of polymers. In this work, the Mark-Houwink coefficients (alpha and K) for the poly(p-acetoxystyrene) homopolymers (PASt) were determined by correlating their weight average molecular weight (<IMG SRC="/img/revistas/po/v14n2/21574s1.gif"<) values, determined by gel-permeation chromatography (GPC) relative to polystyrene standards, with their measured intrinsic viscosity values ([<IMG SRC="/img/revistas/po/v14n2/21574s3.gif"<]). The <IMG SRC="/img/revistas/po/v14n2/21574s2.gif"<of any unknown PASt sample may be estimated by first measuring the sample's intrinsic viscosity, and then applying these alpha and K values with the Mark-Houwink equation.
abstract_unstemmed	O conceito de volume hidrodinâmico pode ser utilizado efetivamente com cromatografia de permeação em gel (GPC) e dados de viscosidade para calcular a massa molar de uma variedade de polímeros. Neste trabalho, as constantes da equação de Mark-Houwink para os homopolímeros de poli(p-acetóxiestireno) (PASt) foram determinadas pela correlação dos valores de massa molar ponderal média (<IMG SRC="/img/revistas/po/v14n2/21574s1.gif"<) determinados por cromatografia de permeação em gel (GPC) relativos a padrões de poliestireno, com as correspondentes medidas de viscosidade intrínseca [<IMG SRC="/img/revistas/po/v14n2/21574s3.gif"<] em soluções de THF a 25 °C. A massa molar viscosimétrica média (<IMG SRC="/img/revistas/po/v14n2/21574s2.gif"<) de qualquer amostra de PASt desconhecida pode ser calculada medindo-se a viscosidade intrínseca da amostra, e aplicando-se então a equação de Mark-Houwink, utilizando-se os valores de K e alfa calculados, 1,442 x 10-2 g/ml e 0,695, respectivamente.<br<The hydrodynamic volume concept can be used effectively with gel-permeation chromatography (GPC) and viscosity data to estimate the molecular weight of a variety of polymers. In this work, the Mark-Houwink coefficients (alpha and K) for the poly(p-acetoxystyrene) homopolymers (PASt) were determined by correlating their weight average molecular weight (<IMG SRC="/img/revistas/po/v14n2/21574s1.gif"<) values, determined by gel-permeation chromatography (GPC) relative to polystyrene standards, with their measured intrinsic viscosity values ([<IMG SRC="/img/revistas/po/v14n2/21574s3.gif"<]). The <IMG SRC="/img/revistas/po/v14n2/21574s2.gif"<of any unknown PASt sample may be estimated by first measuring the sample's intrinsic viscosity, and then applying these alpha and K values with the Mark-Houwink equation.
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title_short	Determinação das constantes K e alfa da equação de Mark-Houwink de poli(p-acetóxiestireno) Determination of K and alpha constants of the Mark-Houwink equation of poly(p-acetoxystyrene)
url	https://doi.org/10.1590/S0104-14282004000200010 https://doaj.org/article/6d8c84fcfae14ff6b4253e7416cc7177 http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282004000200010 https://doaj.org/toc/0104-1428 https://doaj.org/toc/1678-5169
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Neste trabalho, as constantes da equação de Mark-Houwink para os homopolímeros de poli(p-acetóxiestireno) (PASt) foram determinadas pela correlação dos valores de massa molar ponderal média (<IMG SRC="/img/revistas/po/v14n2/21574s1.gif"<) determinados por cromatografia de permeação em gel (GPC) relativos a padrões de poliestireno, com as correspondentes medidas de viscosidade intrínseca [<IMG SRC="/img/revistas/po/v14n2/21574s3.gif"<] em soluções de THF a 25 &deg;C. A massa molar viscosimétrica média (<IMG SRC="/img/revistas/po/v14n2/21574s2.gif"<) de qualquer amostra de PASt desconhecida pode ser calculada medindo-se a viscosidade intrínseca da amostra, e aplicando-se então a equação de Mark-Houwink, utilizando-se os valores de K e alfa calculados, 1,442 x 10-2 g/ml e 0,695, respectivamente.<br<The hydrodynamic volume concept can be used effectively with gel-permeation chromatography (GPC) and viscosity data to estimate the molecular weight of a variety of polymers. In this work, the Mark-Houwink coefficients (alpha and K) for the poly(p-acetoxystyrene) homopolymers (PASt) were determined by correlating their weight average molecular weight (<IMG SRC="/img/revistas/po/v14n2/21574s1.gif"<) values, determined by gel-permeation chromatography (GPC) relative to polystyrene standards, with their measured intrinsic viscosity values ([<IMG SRC="/img/revistas/po/v14n2/21574s3.gif"<]). The <IMG SRC="/img/revistas/po/v14n2/21574s2.gif"<of any unknown PASt sample may be estimated by first measuring the sample's intrinsic viscosity, and then applying these alpha and K values with the Mark-Houwink equation.</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Viscosidade intrínseca</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">massa molar</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">poli(p-acetóxiestireno)</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">síntese</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Intrinsic viscosity</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">molar mass</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">p-acetoxystyrene</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">synthesis</subfield></datafield><datafield tag="653" ind1=" " ind2="0"><subfield code="a">Chemical technology</subfield></datafield><datafield tag="700" ind1="0" ind2=" "><subfield code="a">Isabel F. da Silva</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="700" ind1="0" ind2=" "><subfield code="a">Shu Hui Wang</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="700" ind1="0" ind2=" "><subfield code="a">Debora T. 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Determinação das constantes K e alfa da equação de Mark-Houwink de poli(p-acetóxiestireno) Determination of K and alpha constants of the Mark-Houwink equation of poly(p-acetoxystyrene)

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