Effect of arm number of poly(acrylic acid) on cloud point temperature of poly(2-ethyl-2-oxazoline)

Abstract The phase transition behavior of poly(2-ethyl-2-oxazoline) (PEtOx) under complexation with star-shaped poly(acrylic acid) (PAA) having various arm numbers (two, three, four, and six) has been studied by turbidity and laser light scattering measurements. The change in cloud point temperature...
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Gespeichert in:

Autor*in:	Ambreen, Jaweria [verfasserIn] Siddiq, Mohammad [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2014

Schlagwörter:	Star-poly(acrylic acid) Poly(2-ethyl-2-oxazoline) Cloud point temperature pH UV–vis Spectroscopy Laser Light Scattering

Übergeordnetes Werk:	Enthalten in: Journal of polymer research - Dordrecht : Springer Science + Business Media B.V., 1994, 21(2014), 12 vom: 13. Nov.
Übergeordnetes Werk:	volume:21 ; year:2014 ; number:12 ; day:13 ; month:11

Links:	Volltext

DOI / URN:	10.1007/s10965-014-0608-z

Katalog-ID:	SPR015131165

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520			\|a Abstract The phase transition behavior of poly(2-ethyl-2-oxazoline) (PEtOx) under complexation with star-shaped poly(acrylic acid) (PAA) having various arm numbers (two, three, four, and six) has been studied by turbidity and laser light scattering measurements. The change in cloud point temperature (Tcp) of PEtOx was monitored as a function of pH, ionic strength, and arm number of the star polyelectrolyte. The shift in Tcp to a lower value than that of pure PEtOx was more pronounced at pH 4.2 (pH < $ pK_{a} $), when the carboxylic acid groups are protonated as compared to pH 7.0 (pH > $ pK_{a} $ ), when the acid moieties are partially ionized. Dynamic light scattering showed that these complexes may have micellar core-shell type structure with a mean hydrodynamic radius (Rh) ranging from 12 nm to ∼200 nm depending upon the temperature. Significant shift in Tcp was observed for six-arm star poly(acrylic acid) complexes at both pH values. This change in the Tcp is accredited to the differences in the driving forces of phase transition, including hydrogen bonding between carboxylic acid groups of PAA and the carbonyl moiety of PEtOx as well as the hydrophobic interactions.
650		4	\|a Star-poly(acrylic acid) \|7 (dpeaa)DE-He213
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650		4	\|a UV–vis Spectroscopy \|7 (dpeaa)DE-He213
650		4	\|a Laser Light Scattering \|7 (dpeaa)DE-He213
700	1		\|a Siddiq, Mohammad \|e verfasserin \|4 aut
773	0	8	\|i Enthalten in \|t Journal of polymer research \|d Dordrecht : Springer Science + Business Media B.V., 1994 \|g 21(2014), 12 vom: 13. Nov. \|w (DE-627)340872098 \|w (DE-600)2065616-6 \|x 1572-8935 \|7 nnns
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912			\|a GBV_ILN_150
912			\|a GBV_ILN_151
912			\|a GBV_ILN_152
912			\|a GBV_ILN_161
912			\|a GBV_ILN_170
912			\|a GBV_ILN_171
912			\|a GBV_ILN_187
912			\|a GBV_ILN_206
912			\|a GBV_ILN_213
912			\|a GBV_ILN_224
912			\|a GBV_ILN_230
912			\|a GBV_ILN_250
912			\|a GBV_ILN_281
912			\|a GBV_ILN_285
912			\|a GBV_ILN_293
912			\|a GBV_ILN_370
912			\|a GBV_ILN_602
912			\|a GBV_ILN_636
912			\|a GBV_ILN_702
912			\|a GBV_ILN_2001
912			\|a GBV_ILN_2003
912			\|a GBV_ILN_2004
912			\|a GBV_ILN_2005
912			\|a GBV_ILN_2006
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912			\|a GBV_ILN_2008
912			\|a GBV_ILN_2009
912			\|a GBV_ILN_2010
912			\|a GBV_ILN_2011
912			\|a GBV_ILN_2014
912			\|a GBV_ILN_2015
912			\|a GBV_ILN_2020
912			\|a GBV_ILN_2021
912			\|a GBV_ILN_2025
912			\|a GBV_ILN_2026
912			\|a GBV_ILN_2027
912			\|a GBV_ILN_2031
912			\|a GBV_ILN_2034
912			\|a GBV_ILN_2037
912			\|a GBV_ILN_2038
912			\|a GBV_ILN_2039
912			\|a GBV_ILN_2044
912			\|a GBV_ILN_2048
912			\|a GBV_ILN_2049
912			\|a GBV_ILN_2050
912			\|a GBV_ILN_2055
912			\|a GBV_ILN_2056
912			\|a GBV_ILN_2057
912			\|a GBV_ILN_2059
912			\|a GBV_ILN_2061
912			\|a GBV_ILN_2064
912			\|a GBV_ILN_2065
912			\|a GBV_ILN_2068
912			\|a GBV_ILN_2070
912			\|a GBV_ILN_2086
912			\|a GBV_ILN_2088
912			\|a GBV_ILN_2093
912			\|a GBV_ILN_2106
912			\|a GBV_ILN_2107
912			\|a GBV_ILN_2108
912			\|a GBV_ILN_2110
912			\|a GBV_ILN_2111
912			\|a GBV_ILN_2112
912			\|a GBV_ILN_2113
912			\|a GBV_ILN_2116
912			\|a GBV_ILN_2118
912			\|a GBV_ILN_2119
912			\|a GBV_ILN_2122
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author_variant	j a ja m s ms
matchkey_str	article:15728935:2014----::fetfrnmeoplarlccdnlupiteprtr
hierarchy_sort_str	2014
bklnumber	35.00
publishDate	2014
allfields	10.1007/s10965-014-0608-z doi (DE-627)SPR015131165 (SPR)s10965-014-0608-z-e DE-627 ger DE-627 rakwb eng 540 ASE 35.00 bkl Ambreen, Jaweria verfasserin aut Effect of arm number of poly(acrylic acid) on cloud point temperature of poly(2-ethyl-2-oxazoline) 2014 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract The phase transition behavior of poly(2-ethyl-2-oxazoline) (PEtOx) under complexation with star-shaped poly(acrylic acid) (PAA) having various arm numbers (two, three, four, and six) has been studied by turbidity and laser light scattering measurements. The change in cloud point temperature (Tcp) of PEtOx was monitored as a function of pH, ionic strength, and arm number of the star polyelectrolyte. The shift in Tcp to a lower value than that of pure PEtOx was more pronounced at pH 4.2 (pH < $ pK_{a} $), when the carboxylic acid groups are protonated as compared to pH 7.0 (pH > $ pK_{a} $ ), when the acid moieties are partially ionized. Dynamic light scattering showed that these complexes may have micellar core-shell type structure with a mean hydrodynamic radius (Rh) ranging from 12 nm to ∼200 nm depending upon the temperature. Significant shift in Tcp was observed for six-arm star poly(acrylic acid) complexes at both pH values. This change in the Tcp is accredited to the differences in the driving forces of phase transition, including hydrogen bonding between carboxylic acid groups of PAA and the carbonyl moiety of PEtOx as well as the hydrophobic interactions. Star-poly(acrylic acid) (dpeaa)DE-He213 Poly(2-ethyl-2-oxazoline) (dpeaa)DE-He213 Cloud point temperature (dpeaa)DE-He213 pH (dpeaa)DE-He213 UV–vis Spectroscopy (dpeaa)DE-He213 Laser Light Scattering (dpeaa)DE-He213 Siddiq, Mohammad verfasserin aut Enthalten in Journal of polymer research Dordrecht : Springer Science + Business Media B.V., 1994 21(2014), 12 vom: 13. Nov. (DE-627)340872098 (DE-600)2065616-6 1572-8935 nnns volume:21 year:2014 number:12 day:13 month:11 https://dx.doi.org/10.1007/s10965-014-0608-z lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_206 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 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_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 35.00 ASE AR 21 2014 12 13 11
spelling	10.1007/s10965-014-0608-z doi (DE-627)SPR015131165 (SPR)s10965-014-0608-z-e DE-627 ger DE-627 rakwb eng 540 ASE 35.00 bkl Ambreen, Jaweria verfasserin aut Effect of arm number of poly(acrylic acid) on cloud point temperature of poly(2-ethyl-2-oxazoline) 2014 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract The phase transition behavior of poly(2-ethyl-2-oxazoline) (PEtOx) under complexation with star-shaped poly(acrylic acid) (PAA) having various arm numbers (two, three, four, and six) has been studied by turbidity and laser light scattering measurements. The change in cloud point temperature (Tcp) of PEtOx was monitored as a function of pH, ionic strength, and arm number of the star polyelectrolyte. The shift in Tcp to a lower value than that of pure PEtOx was more pronounced at pH 4.2 (pH < $ pK_{a} $), when the carboxylic acid groups are protonated as compared to pH 7.0 (pH > $ pK_{a} $ ), when the acid moieties are partially ionized. Dynamic light scattering showed that these complexes may have micellar core-shell type structure with a mean hydrodynamic radius (Rh) ranging from 12 nm to ∼200 nm depending upon the temperature. Significant shift in Tcp was observed for six-arm star poly(acrylic acid) complexes at both pH values. This change in the Tcp is accredited to the differences in the driving forces of phase transition, including hydrogen bonding between carboxylic acid groups of PAA and the carbonyl moiety of PEtOx as well as the hydrophobic interactions. Star-poly(acrylic acid) (dpeaa)DE-He213 Poly(2-ethyl-2-oxazoline) (dpeaa)DE-He213 Cloud point temperature (dpeaa)DE-He213 pH (dpeaa)DE-He213 UV–vis Spectroscopy (dpeaa)DE-He213 Laser Light Scattering (dpeaa)DE-He213 Siddiq, Mohammad verfasserin aut Enthalten in Journal of polymer research Dordrecht : Springer Science + Business Media B.V., 1994 21(2014), 12 vom: 13. Nov. (DE-627)340872098 (DE-600)2065616-6 1572-8935 nnns volume:21 year:2014 number:12 day:13 month:11 https://dx.doi.org/10.1007/s10965-014-0608-z lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_206 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 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_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 35.00 ASE AR 21 2014 12 13 11
allfields_unstemmed	10.1007/s10965-014-0608-z doi (DE-627)SPR015131165 (SPR)s10965-014-0608-z-e DE-627 ger DE-627 rakwb eng 540 ASE 35.00 bkl Ambreen, Jaweria verfasserin aut Effect of arm number of poly(acrylic acid) on cloud point temperature of poly(2-ethyl-2-oxazoline) 2014 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract The phase transition behavior of poly(2-ethyl-2-oxazoline) (PEtOx) under complexation with star-shaped poly(acrylic acid) (PAA) having various arm numbers (two, three, four, and six) has been studied by turbidity and laser light scattering measurements. The change in cloud point temperature (Tcp) of PEtOx was monitored as a function of pH, ionic strength, and arm number of the star polyelectrolyte. The shift in Tcp to a lower value than that of pure PEtOx was more pronounced at pH 4.2 (pH < $ pK_{a} $), when the carboxylic acid groups are protonated as compared to pH 7.0 (pH > $ pK_{a} $ ), when the acid moieties are partially ionized. Dynamic light scattering showed that these complexes may have micellar core-shell type structure with a mean hydrodynamic radius (Rh) ranging from 12 nm to ∼200 nm depending upon the temperature. Significant shift in Tcp was observed for six-arm star poly(acrylic acid) complexes at both pH values. This change in the Tcp is accredited to the differences in the driving forces of phase transition, including hydrogen bonding between carboxylic acid groups of PAA and the carbonyl moiety of PEtOx as well as the hydrophobic interactions. Star-poly(acrylic acid) (dpeaa)DE-He213 Poly(2-ethyl-2-oxazoline) (dpeaa)DE-He213 Cloud point temperature (dpeaa)DE-He213 pH (dpeaa)DE-He213 UV–vis Spectroscopy (dpeaa)DE-He213 Laser Light Scattering (dpeaa)DE-He213 Siddiq, Mohammad verfasserin aut Enthalten in Journal of polymer research Dordrecht : Springer Science + Business Media B.V., 1994 21(2014), 12 vom: 13. Nov. (DE-627)340872098 (DE-600)2065616-6 1572-8935 nnns volume:21 year:2014 number:12 day:13 month:11 https://dx.doi.org/10.1007/s10965-014-0608-z lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_206 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 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_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 35.00 ASE AR 21 2014 12 13 11
allfieldsGer	10.1007/s10965-014-0608-z doi (DE-627)SPR015131165 (SPR)s10965-014-0608-z-e DE-627 ger DE-627 rakwb eng 540 ASE 35.00 bkl Ambreen, Jaweria verfasserin aut Effect of arm number of poly(acrylic acid) on cloud point temperature of poly(2-ethyl-2-oxazoline) 2014 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract The phase transition behavior of poly(2-ethyl-2-oxazoline) (PEtOx) under complexation with star-shaped poly(acrylic acid) (PAA) having various arm numbers (two, three, four, and six) has been studied by turbidity and laser light scattering measurements. The change in cloud point temperature (Tcp) of PEtOx was monitored as a function of pH, ionic strength, and arm number of the star polyelectrolyte. The shift in Tcp to a lower value than that of pure PEtOx was more pronounced at pH 4.2 (pH < $ pK_{a} $), when the carboxylic acid groups are protonated as compared to pH 7.0 (pH > $ pK_{a} $ ), when the acid moieties are partially ionized. Dynamic light scattering showed that these complexes may have micellar core-shell type structure with a mean hydrodynamic radius (Rh) ranging from 12 nm to ∼200 nm depending upon the temperature. Significant shift in Tcp was observed for six-arm star poly(acrylic acid) complexes at both pH values. This change in the Tcp is accredited to the differences in the driving forces of phase transition, including hydrogen bonding between carboxylic acid groups of PAA and the carbonyl moiety of PEtOx as well as the hydrophobic interactions. Star-poly(acrylic acid) (dpeaa)DE-He213 Poly(2-ethyl-2-oxazoline) (dpeaa)DE-He213 Cloud point temperature (dpeaa)DE-He213 pH (dpeaa)DE-He213 UV–vis Spectroscopy (dpeaa)DE-He213 Laser Light Scattering (dpeaa)DE-He213 Siddiq, Mohammad verfasserin aut Enthalten in Journal of polymer research Dordrecht : Springer Science + Business Media B.V., 1994 21(2014), 12 vom: 13. Nov. (DE-627)340872098 (DE-600)2065616-6 1572-8935 nnns volume:21 year:2014 number:12 day:13 month:11 https://dx.doi.org/10.1007/s10965-014-0608-z lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_206 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 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_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 35.00 ASE AR 21 2014 12 13 11
allfieldsSound	10.1007/s10965-014-0608-z doi (DE-627)SPR015131165 (SPR)s10965-014-0608-z-e DE-627 ger DE-627 rakwb eng 540 ASE 35.00 bkl Ambreen, Jaweria verfasserin aut Effect of arm number of poly(acrylic acid) on cloud point temperature of poly(2-ethyl-2-oxazoline) 2014 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract The phase transition behavior of poly(2-ethyl-2-oxazoline) (PEtOx) under complexation with star-shaped poly(acrylic acid) (PAA) having various arm numbers (two, three, four, and six) has been studied by turbidity and laser light scattering measurements. The change in cloud point temperature (Tcp) of PEtOx was monitored as a function of pH, ionic strength, and arm number of the star polyelectrolyte. The shift in Tcp to a lower value than that of pure PEtOx was more pronounced at pH 4.2 (pH < $ pK_{a} $), when the carboxylic acid groups are protonated as compared to pH 7.0 (pH > $ pK_{a} $ ), when the acid moieties are partially ionized. Dynamic light scattering showed that these complexes may have micellar core-shell type structure with a mean hydrodynamic radius (Rh) ranging from 12 nm to ∼200 nm depending upon the temperature. Significant shift in Tcp was observed for six-arm star poly(acrylic acid) complexes at both pH values. This change in the Tcp is accredited to the differences in the driving forces of phase transition, including hydrogen bonding between carboxylic acid groups of PAA and the carbonyl moiety of PEtOx as well as the hydrophobic interactions. Star-poly(acrylic acid) (dpeaa)DE-He213 Poly(2-ethyl-2-oxazoline) (dpeaa)DE-He213 Cloud point temperature (dpeaa)DE-He213 pH (dpeaa)DE-He213 UV–vis Spectroscopy (dpeaa)DE-He213 Laser Light Scattering (dpeaa)DE-He213 Siddiq, Mohammad verfasserin aut Enthalten in Journal of polymer research Dordrecht : Springer Science + Business Media B.V., 1994 21(2014), 12 vom: 13. Nov. (DE-627)340872098 (DE-600)2065616-6 1572-8935 nnns volume:21 year:2014 number:12 day:13 month:11 https://dx.doi.org/10.1007/s10965-014-0608-z lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_206 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 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_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 35.00 ASE AR 21 2014 12 13 11
language	English
source	Enthalten in Journal of polymer research 21(2014), 12 vom: 13. Nov. volume:21 year:2014 number:12 day:13 month:11
sourceStr	Enthalten in Journal of polymer research 21(2014), 12 vom: 13. Nov. volume:21 year:2014 number:12 day:13 month:11
format_phy_str_mv	Article
institution	findex.gbv.de
topic_facet	Star-poly(acrylic acid) Poly(2-ethyl-2-oxazoline) Cloud point temperature pH UV–vis Spectroscopy Laser Light Scattering
dewey-raw	540
isfreeaccess_bool	false
container_title	Journal of polymer research
authorswithroles_txt_mv	Ambreen, Jaweria @@aut@@ Siddiq, Mohammad @@aut@@
publishDateDaySort_date	2014-11-13T00:00:00Z
hierarchy_top_id	340872098
dewey-sort	3540
id	SPR015131165
language_de	englisch
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author	Ambreen, Jaweria
spellingShingle	Ambreen, Jaweria ddc 540 bkl 35.00 misc Star-poly(acrylic acid) misc Poly(2-ethyl-2-oxazoline) misc Cloud point temperature misc pH misc UV–vis Spectroscopy misc Laser Light Scattering Effect of arm number of poly(acrylic acid) on cloud point temperature of poly(2-ethyl-2-oxazoline)
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topic_title	540 ASE 35.00 bkl Effect of arm number of poly(acrylic acid) on cloud point temperature of poly(2-ethyl-2-oxazoline) Star-poly(acrylic acid) (dpeaa)DE-He213 Poly(2-ethyl-2-oxazoline) (dpeaa)DE-He213 Cloud point temperature (dpeaa)DE-He213 pH (dpeaa)DE-He213 UV–vis Spectroscopy (dpeaa)DE-He213 Laser Light Scattering (dpeaa)DE-He213
topic	ddc 540 bkl 35.00 misc Star-poly(acrylic acid) misc Poly(2-ethyl-2-oxazoline) misc Cloud point temperature misc pH misc UV–vis Spectroscopy misc Laser Light Scattering
topic_unstemmed	ddc 540 bkl 35.00 misc Star-poly(acrylic acid) misc Poly(2-ethyl-2-oxazoline) misc Cloud point temperature misc pH misc UV–vis Spectroscopy misc Laser Light Scattering
topic_browse	ddc 540 bkl 35.00 misc Star-poly(acrylic acid) misc Poly(2-ethyl-2-oxazoline) misc Cloud point temperature misc pH misc UV–vis Spectroscopy misc Laser Light Scattering
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title	Effect of arm number of poly(acrylic acid) on cloud point temperature of poly(2-ethyl-2-oxazoline)
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title_full	Effect of arm number of poly(acrylic acid) on cloud point temperature of poly(2-ethyl-2-oxazoline)
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journal	Journal of polymer research
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author_browse	Ambreen, Jaweria Siddiq, Mohammad
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class	540 ASE 35.00 bkl
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title_sort	effect of arm number of poly(acrylic acid) on cloud point temperature of poly(2-ethyl-2-oxazoline)
title_auth	Effect of arm number of poly(acrylic acid) on cloud point temperature of poly(2-ethyl-2-oxazoline)
abstract	Abstract The phase transition behavior of poly(2-ethyl-2-oxazoline) (PEtOx) under complexation with star-shaped poly(acrylic acid) (PAA) having various arm numbers (two, three, four, and six) has been studied by turbidity and laser light scattering measurements. The change in cloud point temperature (Tcp) of PEtOx was monitored as a function of pH, ionic strength, and arm number of the star polyelectrolyte. The shift in Tcp to a lower value than that of pure PEtOx was more pronounced at pH 4.2 (pH < $ pK_{a} $), when the carboxylic acid groups are protonated as compared to pH 7.0 (pH > $ pK_{a} $ ), when the acid moieties are partially ionized. Dynamic light scattering showed that these complexes may have micellar core-shell type structure with a mean hydrodynamic radius (Rh) ranging from 12 nm to ∼200 nm depending upon the temperature. Significant shift in Tcp was observed for six-arm star poly(acrylic acid) complexes at both pH values. This change in the Tcp is accredited to the differences in the driving forces of phase transition, including hydrogen bonding between carboxylic acid groups of PAA and the carbonyl moiety of PEtOx as well as the hydrophobic interactions.
abstractGer	Abstract The phase transition behavior of poly(2-ethyl-2-oxazoline) (PEtOx) under complexation with star-shaped poly(acrylic acid) (PAA) having various arm numbers (two, three, four, and six) has been studied by turbidity and laser light scattering measurements. The change in cloud point temperature (Tcp) of PEtOx was monitored as a function of pH, ionic strength, and arm number of the star polyelectrolyte. The shift in Tcp to a lower value than that of pure PEtOx was more pronounced at pH 4.2 (pH < $ pK_{a} $), when the carboxylic acid groups are protonated as compared to pH 7.0 (pH > $ pK_{a} $ ), when the acid moieties are partially ionized. Dynamic light scattering showed that these complexes may have micellar core-shell type structure with a mean hydrodynamic radius (Rh) ranging from 12 nm to ∼200 nm depending upon the temperature. Significant shift in Tcp was observed for six-arm star poly(acrylic acid) complexes at both pH values. This change in the Tcp is accredited to the differences in the driving forces of phase transition, including hydrogen bonding between carboxylic acid groups of PAA and the carbonyl moiety of PEtOx as well as the hydrophobic interactions.
abstract_unstemmed	Abstract The phase transition behavior of poly(2-ethyl-2-oxazoline) (PEtOx) under complexation with star-shaped poly(acrylic acid) (PAA) having various arm numbers (two, three, four, and six) has been studied by turbidity and laser light scattering measurements. The change in cloud point temperature (Tcp) of PEtOx was monitored as a function of pH, ionic strength, and arm number of the star polyelectrolyte. The shift in Tcp to a lower value than that of pure PEtOx was more pronounced at pH 4.2 (pH < $ pK_{a} $), when the carboxylic acid groups are protonated as compared to pH 7.0 (pH > $ pK_{a} $ ), when the acid moieties are partially ionized. Dynamic light scattering showed that these complexes may have micellar core-shell type structure with a mean hydrodynamic radius (Rh) ranging from 12 nm to ∼200 nm depending upon the temperature. Significant shift in Tcp was observed for six-arm star poly(acrylic acid) complexes at both pH values. This change in the Tcp is accredited to the differences in the driving forces of phase transition, including hydrogen bonding between carboxylic acid groups of PAA and the carbonyl moiety of PEtOx as well as the hydrophobic interactions.
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title_short	Effect of arm number of poly(acrylic acid) on cloud point temperature of poly(2-ethyl-2-oxazoline)
url	https://dx.doi.org/10.1007/s10965-014-0608-z
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up_date	2024-07-03T14:07:02.427Z
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The change in cloud point temperature (Tcp) of PEtOx was monitored as a function of pH, ionic strength, and arm number of the star polyelectrolyte. The shift in Tcp to a lower value than that of pure PEtOx was more pronounced at pH 4.2 (pH < $ pK_{a} $), when the carboxylic acid groups are protonated as compared to pH 7.0 (pH > $ pK_{a} $ ), when the acid moieties are partially ionized. Dynamic light scattering showed that these complexes may have micellar core-shell type structure with a mean hydrodynamic radius (Rh) ranging from 12 nm to ∼200 nm depending upon the temperature. Significant shift in Tcp was observed for six-arm star poly(acrylic acid) complexes at both pH values. 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Effect of arm number of poly(acrylic acid) on cloud point temperature of poly(2-ethyl-2-oxazoline)

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