Interplay between hydrogen bonding and macromolecular architecture leading to unusual phase behavioir in thermosensitive micirogels

被引：85

作者：

Keerl, Martina ^{[1
]}

Smirnovas, Vytautas ^{[2
]}

Winter, Roland ^{[2
]}

Richtering, Walter ^{[1
]}

机构：

[1] Rhein Westfal TH Aachen, D-52026 Aachen, Germany

[2] Univ Dortmund, Dept Chem Phys Chem 1, D-44227 Dortmund, Germany

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2008年 / 47卷 / 02期

关键词：

gels; hydrogen bonds; phase transitions; polymers; vibrational spectroscopy;

D O I：

10.1002/anie.200703728

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

(Chemical Equation Presented) In a depressed state: The intra- and intermolecular hydrogen-bonding pattern of microgels comprising N-isopropylacrylamide (NIPAM) and N,N-diethylacrylamide (DEAAM) can be determined by FTIR spectroscopy. In contrast to core-shell systems (see picture, right), an increase in intramolecular hydrogen bonding in copolymer microgels (left) favors polymer-polymer interactions and leads to a marked depression of the phase-transition temperature. © 2008 Wiley-VCH Verlag GmbH & Co. KGaA.

引用

页码：338 / 341

页数：4

共 28 条

[1] Doubly temperature sensitive core-shell microgels [J].