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231224s2012 xx |||||o 00| ||eng c |
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|a 10.1021/la300934g
|2 doi
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|a eng
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|a Hashidzume, Akihito
|e verfasserin
|4 aut
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|a Phase behavior of aqueous solutions of copolymers of N,N'-diisopropylfumaramide and N-isopropylacrylamide
|b effect of the density of side chains
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|c 2012
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|a Text
|b txt
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|a Date Completed 07.08.2012
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|a Date Revised 03.04.2012
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a This letter describes the phase behavior of aqueous solutions of an N-isopropylacrylamide (NIPAM) homopolymer and copolymers of N,N'-diisopropylfumaramide (DIPFAM) and NIPAM as studied by transmittance measurements, infrared spectroscopy, and differential scanning calorimetry to reveal the effect of the density of N-isopropylamide side chain upon the phase behavior. The clouding-point and clearing-point temperatures decreased with increasing the mole fraction of DIPFAM (x(D)). It was noteworthy that only an extra side chain per ca. 7 NIPAM units had a remarkable effect on the phase behavior; the interactions between side chains were stronger, the intrapolymer contraction was less favorable, and the cooperativity of phase transition was lower at x(D) = 0.15 presumably because of the steric hindrance of dense side chains
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|a Journal Article
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|a Matsumoto, Akiko
|e verfasserin
|4 aut
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1 |
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|a Mori, Takeshi
|e verfasserin
|4 aut
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1 |
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|a Shikata, Toshiyuki
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Sato, Takahiro
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 28(2012), 13 vom: 03. Apr., Seite 5522-6
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|x 1520-5827
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|g volume:28
|g year:2012
|g number:13
|g day:03
|g month:04
|g pages:5522-6
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|u http://dx.doi.org/10.1021/la300934g
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