Correlação entre propriedades mecânicas e parâmetros estruturais de poliuretanos à base de poli(épsilon-caprolactona) Relationships between mechanical properties and structural parameters of polyurethanes containing poly(epsilon-caprolactone)

No presente trabalho foram preparados poliuretanos (PUs) segmentados. Primeiramente foi obtido um pré-polímero (PP) a partir da reação de 2,4 e 2,6 - diisocianato de tolileno (TDI) e poli(épsilon-caprolactona) diol (PCL). A PCL é um poliéster biodegradável que constituiu o segmento flexível do PU. O...
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Autor*in:	Juliana Kloss [verfasserIn] Caroline Bugay [verfasserIn] Leni Akcelrud [verfasserIn] Sônia F. Zawadzki [verfasserIn] Shu-Hui Wang [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch ; Portugiesisch

Erschienen:	2005

Schlagwörter:	Poliuretano poli(épsilon-caprolactona) biodegradação propriedades mecânicas Polyurethanes polycaprolactone biodegradable materials mechanical properties

Übergeordnetes Werk:	In: Polímeros - Associação Brasileira de Polímeros, 2004, 15(2005), 1, Seite 5
Übergeordnetes Werk:	volume:15 ; year:2005 ; number:1 ; pages:5

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

DOI / URN:	10.1590/S0104-14282005000100004

Katalog-ID:	DOAJ017547571

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spelling	10.1590/S0104-14282005000100004 doi (DE-627)DOAJ017547571 (DE-599)DOAJ524e45a256314e1b8776bbf861bb84af DE-627 ger DE-627 rakwb eng por TP1-1185 Juliana Kloss verfasserin aut Correlação entre propriedades mecânicas e parâmetros estruturais de poliuretanos à base de poli(épsilon-caprolactona) Relationships between mechanical properties and structural parameters of polyurethanes containing poly(epsilon-caprolactone) 2005 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier No presente trabalho foram preparados poliuretanos (PUs) segmentados. Primeiramente foi obtido um pré-polímero (PP) a partir da reação de 2,4 e 2,6 - diisocianato de tolileno (TDI) e poli(épsilon-caprolactona) diol (PCL). A PCL é um poliéster biodegradável que constituiu o segmento flexível do PU. O segmento rígido foi constituído por unidades uretânicas provenientes da ligação entre as extremidades isocianato do PP e as hidroxilas do extensor de cadeia: 1,4 - butanodiol (BDO), ou sacarose (SAC), ou glicose (GLY). Foram avaliadas as propriedades mecânicas e dinâmico-mecânicas dos poliuretanos obtidos e estas foram correlacionadas com os parâmetros estruturais. Os resultados foram justificados com base na intensidade das interações de hidrogênio, na mistura de fases, no volume dos extensores cíclicos e na presença de ligações cruzadas. Estes PUs estão sendo estudados com vistas à preparação de materiais biodegradáveis com propriedades mecânicas úteis.<br<Segmented polyurethanes containing polycaprolactone as soft segment were prepared taking into account the biodegradable character of this compound. The hard block was produced by the reaction between tolylene diisocyanate and a chain extender (1,4 butanediol, sucrose or glucose). The mechanical and dynamical properties were evaluated as a function of the contents of rigid blocks. The results were analyzed on the basis of the intermolecular interactions, mainly H bonds, phase mixture, volume of cyclic chain extenders and crosslinking. These polyurethanes are being studied aiming at the preparation of biodegradable materials with useful mechanical properties. Poliuretano poli(épsilon-caprolactona) biodegradação propriedades mecânicas Polyurethanes polycaprolactone biodegradable materials mechanical properties Chemical technology Caroline Bugay verfasserin aut Leni Akcelrud verfasserin aut Sônia F. Zawadzki verfasserin aut Shu-Hui Wang verfasserin aut In Polímeros Associação Brasileira de Polímeros, 2004 15(2005), 1, Seite 5 (DE-627)331764148 (DE-600)2053218-0 16785169 nnns volume:15 year:2005 number:1 pages:5 https://doi.org/10.1590/S0104-14282005000100004 kostenfrei https://doaj.org/article/524e45a256314e1b8776bbf861bb84af kostenfrei http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282005000100004 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 15 2005 1 5
allfields_unstemmed	10.1590/S0104-14282005000100004 doi (DE-627)DOAJ017547571 (DE-599)DOAJ524e45a256314e1b8776bbf861bb84af DE-627 ger DE-627 rakwb eng por TP1-1185 Juliana Kloss verfasserin aut Correlação entre propriedades mecânicas e parâmetros estruturais de poliuretanos à base de poli(épsilon-caprolactona) Relationships between mechanical properties and structural parameters of polyurethanes containing poly(epsilon-caprolactone) 2005 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier No presente trabalho foram preparados poliuretanos (PUs) segmentados. Primeiramente foi obtido um pré-polímero (PP) a partir da reação de 2,4 e 2,6 - diisocianato de tolileno (TDI) e poli(épsilon-caprolactona) diol (PCL). A PCL é um poliéster biodegradável que constituiu o segmento flexível do PU. O segmento rígido foi constituído por unidades uretânicas provenientes da ligação entre as extremidades isocianato do PP e as hidroxilas do extensor de cadeia: 1,4 - butanodiol (BDO), ou sacarose (SAC), ou glicose (GLY). Foram avaliadas as propriedades mecânicas e dinâmico-mecânicas dos poliuretanos obtidos e estas foram correlacionadas com os parâmetros estruturais. Os resultados foram justificados com base na intensidade das interações de hidrogênio, na mistura de fases, no volume dos extensores cíclicos e na presença de ligações cruzadas. Estes PUs estão sendo estudados com vistas à preparação de materiais biodegradáveis com propriedades mecânicas úteis.<br<Segmented polyurethanes containing polycaprolactone as soft segment were prepared taking into account the biodegradable character of this compound. The hard block was produced by the reaction between tolylene diisocyanate and a chain extender (1,4 butanediol, sucrose or glucose). The mechanical and dynamical properties were evaluated as a function of the contents of rigid blocks. The results were analyzed on the basis of the intermolecular interactions, mainly H bonds, phase mixture, volume of cyclic chain extenders and crosslinking. These polyurethanes are being studied aiming at the preparation of biodegradable materials with useful mechanical properties. Poliuretano poli(épsilon-caprolactona) biodegradação propriedades mecânicas Polyurethanes polycaprolactone biodegradable materials mechanical properties Chemical technology Caroline Bugay verfasserin aut Leni Akcelrud verfasserin aut Sônia F. Zawadzki verfasserin aut Shu-Hui Wang verfasserin aut In Polímeros Associação Brasileira de Polímeros, 2004 15(2005), 1, Seite 5 (DE-627)331764148 (DE-600)2053218-0 16785169 nnns volume:15 year:2005 number:1 pages:5 https://doi.org/10.1590/S0104-14282005000100004 kostenfrei https://doaj.org/article/524e45a256314e1b8776bbf861bb84af kostenfrei http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282005000100004 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 15 2005 1 5
allfieldsGer	10.1590/S0104-14282005000100004 doi (DE-627)DOAJ017547571 (DE-599)DOAJ524e45a256314e1b8776bbf861bb84af DE-627 ger DE-627 rakwb eng por TP1-1185 Juliana Kloss verfasserin aut Correlação entre propriedades mecânicas e parâmetros estruturais de poliuretanos à base de poli(épsilon-caprolactona) Relationships between mechanical properties and structural parameters of polyurethanes containing poly(epsilon-caprolactone) 2005 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier No presente trabalho foram preparados poliuretanos (PUs) segmentados. Primeiramente foi obtido um pré-polímero (PP) a partir da reação de 2,4 e 2,6 - diisocianato de tolileno (TDI) e poli(épsilon-caprolactona) diol (PCL). A PCL é um poliéster biodegradável que constituiu o segmento flexível do PU. O segmento rígido foi constituído por unidades uretânicas provenientes da ligação entre as extremidades isocianato do PP e as hidroxilas do extensor de cadeia: 1,4 - butanodiol (BDO), ou sacarose (SAC), ou glicose (GLY). Foram avaliadas as propriedades mecânicas e dinâmico-mecânicas dos poliuretanos obtidos e estas foram correlacionadas com os parâmetros estruturais. Os resultados foram justificados com base na intensidade das interações de hidrogênio, na mistura de fases, no volume dos extensores cíclicos e na presença de ligações cruzadas. Estes PUs estão sendo estudados com vistas à preparação de materiais biodegradáveis com propriedades mecânicas úteis.<br<Segmented polyurethanes containing polycaprolactone as soft segment were prepared taking into account the biodegradable character of this compound. The hard block was produced by the reaction between tolylene diisocyanate and a chain extender (1,4 butanediol, sucrose or glucose). The mechanical and dynamical properties were evaluated as a function of the contents of rigid blocks. The results were analyzed on the basis of the intermolecular interactions, mainly H bonds, phase mixture, volume of cyclic chain extenders and crosslinking. These polyurethanes are being studied aiming at the preparation of biodegradable materials with useful mechanical properties. Poliuretano poli(épsilon-caprolactona) biodegradação propriedades mecânicas Polyurethanes polycaprolactone biodegradable materials mechanical properties Chemical technology Caroline Bugay verfasserin aut Leni Akcelrud verfasserin aut Sônia F. Zawadzki verfasserin aut Shu-Hui Wang verfasserin aut In Polímeros Associação Brasileira de Polímeros, 2004 15(2005), 1, Seite 5 (DE-627)331764148 (DE-600)2053218-0 16785169 nnns volume:15 year:2005 number:1 pages:5 https://doi.org/10.1590/S0104-14282005000100004 kostenfrei https://doaj.org/article/524e45a256314e1b8776bbf861bb84af kostenfrei http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282005000100004 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 15 2005 1 5
allfieldsSound	10.1590/S0104-14282005000100004 doi (DE-627)DOAJ017547571 (DE-599)DOAJ524e45a256314e1b8776bbf861bb84af DE-627 ger DE-627 rakwb eng por TP1-1185 Juliana Kloss verfasserin aut Correlação entre propriedades mecânicas e parâmetros estruturais de poliuretanos à base de poli(épsilon-caprolactona) Relationships between mechanical properties and structural parameters of polyurethanes containing poly(epsilon-caprolactone) 2005 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier No presente trabalho foram preparados poliuretanos (PUs) segmentados. Primeiramente foi obtido um pré-polímero (PP) a partir da reação de 2,4 e 2,6 - diisocianato de tolileno (TDI) e poli(épsilon-caprolactona) diol (PCL). A PCL é um poliéster biodegradável que constituiu o segmento flexível do PU. O segmento rígido foi constituído por unidades uretânicas provenientes da ligação entre as extremidades isocianato do PP e as hidroxilas do extensor de cadeia: 1,4 - butanodiol (BDO), ou sacarose (SAC), ou glicose (GLY). Foram avaliadas as propriedades mecânicas e dinâmico-mecânicas dos poliuretanos obtidos e estas foram correlacionadas com os parâmetros estruturais. Os resultados foram justificados com base na intensidade das interações de hidrogênio, na mistura de fases, no volume dos extensores cíclicos e na presença de ligações cruzadas. Estes PUs estão sendo estudados com vistas à preparação de materiais biodegradáveis com propriedades mecânicas úteis.<br<Segmented polyurethanes containing polycaprolactone as soft segment were prepared taking into account the biodegradable character of this compound. The hard block was produced by the reaction between tolylene diisocyanate and a chain extender (1,4 butanediol, sucrose or glucose). The mechanical and dynamical properties were evaluated as a function of the contents of rigid blocks. The results were analyzed on the basis of the intermolecular interactions, mainly H bonds, phase mixture, volume of cyclic chain extenders and crosslinking. These polyurethanes are being studied aiming at the preparation of biodegradable materials with useful mechanical properties. Poliuretano poli(épsilon-caprolactona) biodegradação propriedades mecânicas Polyurethanes polycaprolactone biodegradable materials mechanical properties Chemical technology Caroline Bugay verfasserin aut Leni Akcelrud verfasserin aut Sônia F. Zawadzki verfasserin aut Shu-Hui Wang verfasserin aut In Polímeros Associação Brasileira de Polímeros, 2004 15(2005), 1, Seite 5 (DE-627)331764148 (DE-600)2053218-0 16785169 nnns volume:15 year:2005 number:1 pages:5 https://doi.org/10.1590/S0104-14282005000100004 kostenfrei https://doaj.org/article/524e45a256314e1b8776bbf861bb84af kostenfrei http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282005000100004 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 15 2005 1 5
language	English Portuguese
source	In Polímeros 15(2005), 1, Seite 5 volume:15 year:2005 number:1 pages:5
sourceStr	In Polímeros 15(2005), 1, Seite 5 volume:15 year:2005 number:1 pages:5
format_phy_str_mv	Article
institution	findex.gbv.de
topic_facet	Poliuretano poli(épsilon-caprolactona) biodegradação propriedades mecânicas Polyurethanes polycaprolactone biodegradable materials mechanical properties Chemical technology
isfreeaccess_bool	true
container_title	Polímeros
authorswithroles_txt_mv	Juliana Kloss @@aut@@ Caroline Bugay @@aut@@ Leni Akcelrud @@aut@@ Sônia F. Zawadzki @@aut@@ Shu-Hui Wang @@aut@@
publishDateDaySort_date	2005-01-01T00:00:00Z
hierarchy_top_id	331764148
id	DOAJ017547571
language_de	englisch portugiesisch
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Estes PUs estão sendo estudados com vistas à preparação de materiais biodegradáveis com propriedades mecânicas úteis.<br<Segmented polyurethanes containing polycaprolactone as soft segment were prepared taking into account the biodegradable character of this compound. The hard block was produced by the reaction between tolylene diisocyanate and a chain extender (1,4 butanediol, sucrose or glucose). The mechanical and dynamical properties were evaluated as a function of the contents of rigid blocks. The results were analyzed on the basis of the intermolecular interactions, mainly H bonds, phase mixture, volume of cyclic chain extenders and crosslinking. 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callnumber-first	T - Technology
author	Juliana Kloss
spellingShingle	Juliana Kloss misc TP1-1185 misc Poliuretano misc poli(épsilon-caprolactona) misc biodegradação misc propriedades mecânicas misc Polyurethanes misc polycaprolactone misc biodegradable materials misc mechanical properties misc Chemical technology Correlação entre propriedades mecânicas e parâmetros estruturais de poliuretanos à base de poli(épsilon-caprolactona) Relationships between mechanical properties and structural parameters of polyurethanes containing poly(epsilon-caprolactone)
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topic_title	TP1-1185 Correlação entre propriedades mecânicas e parâmetros estruturais de poliuretanos à base de poli(épsilon-caprolactona) Relationships between mechanical properties and structural parameters of polyurethanes containing poly(epsilon-caprolactone) Poliuretano poli(épsilon-caprolactona) biodegradação propriedades mecânicas Polyurethanes polycaprolactone biodegradable materials mechanical properties
topic	misc TP1-1185 misc Poliuretano misc poli(épsilon-caprolactona) misc biodegradação misc propriedades mecânicas misc Polyurethanes misc polycaprolactone misc biodegradable materials misc mechanical properties misc Chemical technology
topic_unstemmed	misc TP1-1185 misc Poliuretano misc poli(épsilon-caprolactona) misc biodegradação misc propriedades mecânicas misc Polyurethanes misc polycaprolactone misc biodegradable materials misc mechanical properties misc Chemical technology
topic_browse	misc TP1-1185 misc Poliuretano misc poli(épsilon-caprolactona) misc biodegradação misc propriedades mecânicas misc Polyurethanes misc polycaprolactone misc biodegradable materials misc mechanical properties misc Chemical technology
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title	Correlação entre propriedades mecânicas e parâmetros estruturais de poliuretanos à base de poli(épsilon-caprolactona) Relationships between mechanical properties and structural parameters of polyurethanes containing poly(epsilon-caprolactone)
ctrlnum	(DE-627)DOAJ017547571 (DE-599)DOAJ524e45a256314e1b8776bbf861bb84af
title_full	Correlação entre propriedades mecânicas e parâmetros estruturais de poliuretanos à base de poli(épsilon-caprolactona) Relationships between mechanical properties and structural parameters of polyurethanes containing poly(epsilon-caprolactone)
author_sort	Juliana Kloss
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author_browse	Juliana Kloss Caroline Bugay Leni Akcelrud Sônia F. Zawadzki Shu-Hui Wang
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class	TP1-1185
format_se	Elektronische Aufsätze
author-letter	Juliana Kloss
doi_str_mv	10.1590/S0104-14282005000100004
author2-role	verfasserin
title_sort	correlação entre propriedades mecânicas e parâmetros estruturais de poliuretanos à base de poli(épsilon-caprolactona) relationships between mechanical properties and structural parameters of polyurethanes containing poly(epsilon-caprolactone)
callnumber	TP1-1185
title_auth	Correlação entre propriedades mecânicas e parâmetros estruturais de poliuretanos à base de poli(épsilon-caprolactona) Relationships between mechanical properties and structural parameters of polyurethanes containing poly(epsilon-caprolactone)
abstract	No presente trabalho foram preparados poliuretanos (PUs) segmentados. Primeiramente foi obtido um pré-polímero (PP) a partir da reação de 2,4 e 2,6 - diisocianato de tolileno (TDI) e poli(épsilon-caprolactona) diol (PCL). A PCL é um poliéster biodegradável que constituiu o segmento flexível do PU. O segmento rígido foi constituído por unidades uretânicas provenientes da ligação entre as extremidades isocianato do PP e as hidroxilas do extensor de cadeia: 1,4 - butanodiol (BDO), ou sacarose (SAC), ou glicose (GLY). Foram avaliadas as propriedades mecânicas e dinâmico-mecânicas dos poliuretanos obtidos e estas foram correlacionadas com os parâmetros estruturais. Os resultados foram justificados com base na intensidade das interações de hidrogênio, na mistura de fases, no volume dos extensores cíclicos e na presença de ligações cruzadas. Estes PUs estão sendo estudados com vistas à preparação de materiais biodegradáveis com propriedades mecânicas úteis.<br<Segmented polyurethanes containing polycaprolactone as soft segment were prepared taking into account the biodegradable character of this compound. The hard block was produced by the reaction between tolylene diisocyanate and a chain extender (1,4 butanediol, sucrose or glucose). The mechanical and dynamical properties were evaluated as a function of the contents of rigid blocks. The results were analyzed on the basis of the intermolecular interactions, mainly H bonds, phase mixture, volume of cyclic chain extenders and crosslinking. These polyurethanes are being studied aiming at the preparation of biodegradable materials with useful mechanical properties.
abstractGer	No presente trabalho foram preparados poliuretanos (PUs) segmentados. Primeiramente foi obtido um pré-polímero (PP) a partir da reação de 2,4 e 2,6 - diisocianato de tolileno (TDI) e poli(épsilon-caprolactona) diol (PCL). A PCL é um poliéster biodegradável que constituiu o segmento flexível do PU. O segmento rígido foi constituído por unidades uretânicas provenientes da ligação entre as extremidades isocianato do PP e as hidroxilas do extensor de cadeia: 1,4 - butanodiol (BDO), ou sacarose (SAC), ou glicose (GLY). Foram avaliadas as propriedades mecânicas e dinâmico-mecânicas dos poliuretanos obtidos e estas foram correlacionadas com os parâmetros estruturais. Os resultados foram justificados com base na intensidade das interações de hidrogênio, na mistura de fases, no volume dos extensores cíclicos e na presença de ligações cruzadas. Estes PUs estão sendo estudados com vistas à preparação de materiais biodegradáveis com propriedades mecânicas úteis.<br<Segmented polyurethanes containing polycaprolactone as soft segment were prepared taking into account the biodegradable character of this compound. The hard block was produced by the reaction between tolylene diisocyanate and a chain extender (1,4 butanediol, sucrose or glucose). The mechanical and dynamical properties were evaluated as a function of the contents of rigid blocks. The results were analyzed on the basis of the intermolecular interactions, mainly H bonds, phase mixture, volume of cyclic chain extenders and crosslinking. These polyurethanes are being studied aiming at the preparation of biodegradable materials with useful mechanical properties.
abstract_unstemmed	No presente trabalho foram preparados poliuretanos (PUs) segmentados. Primeiramente foi obtido um pré-polímero (PP) a partir da reação de 2,4 e 2,6 - diisocianato de tolileno (TDI) e poli(épsilon-caprolactona) diol (PCL). A PCL é um poliéster biodegradável que constituiu o segmento flexível do PU. O segmento rígido foi constituído por unidades uretânicas provenientes da ligação entre as extremidades isocianato do PP e as hidroxilas do extensor de cadeia: 1,4 - butanodiol (BDO), ou sacarose (SAC), ou glicose (GLY). Foram avaliadas as propriedades mecânicas e dinâmico-mecânicas dos poliuretanos obtidos e estas foram correlacionadas com os parâmetros estruturais. Os resultados foram justificados com base na intensidade das interações de hidrogênio, na mistura de fases, no volume dos extensores cíclicos e na presença de ligações cruzadas. Estes PUs estão sendo estudados com vistas à preparação de materiais biodegradáveis com propriedades mecânicas úteis.<br<Segmented polyurethanes containing polycaprolactone as soft segment were prepared taking into account the biodegradable character of this compound. The hard block was produced by the reaction between tolylene diisocyanate and a chain extender (1,4 butanediol, sucrose or glucose). The mechanical and dynamical properties were evaluated as a function of the contents of rigid blocks. The results were analyzed on the basis of the intermolecular interactions, mainly H bonds, phase mixture, volume of cyclic chain extenders and crosslinking. These polyurethanes are being studied aiming at the preparation of biodegradable materials with useful mechanical properties.
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title_short	Correlação entre propriedades mecânicas e parâmetros estruturais de poliuretanos à base de poli(épsilon-caprolactona) Relationships between mechanical properties and structural parameters of polyurethanes containing poly(epsilon-caprolactone)
url	https://doi.org/10.1590/S0104-14282005000100004 https://doaj.org/article/524e45a256314e1b8776bbf861bb84af http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282005000100004 https://doaj.org/toc/0104-1428 https://doaj.org/toc/1678-5169
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Correlação entre propriedades mecânicas e parâmetros estruturais de poliuretanos à base de poli(épsilon-caprolactona) Relationships between mechanical properties and structural parameters of polyurethanes containing poly(epsilon-caprolactone)

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