The Effect of Hofmeister Salts on the LCST Transition of Poly(2-oxazoline)s with Varying Hydrophilicity

被引：148

作者：

Bloksma, Meta M. ^{[1
,2
,3
]}

Bakker, Daniel J. ^{[1
]}

Weber, Christine ^{[2
,3
]}

Hoogenboom, Richard ^{[1
,2
]}

Schubert, Ulrich S. ^{[1
,2
,3
]}

机构：

[1] Eindhoven Univ Technol, Lab Macromol Chem & Nanosci, NL-5600 MB Eindhoven, Netherlands

[2] Dutch Polymer Inst, NL-5600 AX Eindhoven, Netherlands

[3] Univ Jena, Lab Organ & Macromol Chem, D-07743 Jena, Germany

来源：

MACROMOLECULAR RAPID COMMUNICATIONS | 2010年 / 31卷 / 08期

关键词：

graft copolymer; high-throughput screening; hofmeister salts; LCST; polyoxazoline; CRITICAL SOLUTION TEMPERATURE; N-ISOPROPYLACRYLAMIDE; RESPONSIVE POLYMERS; AQUEOUS-SOLUTIONS; MACROMOLECULES; SOLUBILITY; ANIONS; SERIES; PNIPAM;

D O I：

10.1002/marc.200900843

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The influence of Hofmeister salts was investigated on the cloud point of three poly(2-oxazoline)s, namely poly(2-ethyl-2-oxazoline) [PEtOx], poly(2-n-propy1-2-oxazoline) [PnPro-pOx], and poly(2-isopropyl-2-oxazoline) [PiPropOx]. In addition, a comb polymer based on oligo-2-ethyl-2-oxazoline side chains and a methacrylate backbone (POEtOxMA) was included in this investigation. It was found that the ionic response of the poly(2-oxazoline)s strongly depends on their hydrophilicity. The comb polymer POEtOxMA revealed a strikingly similar response to the salts as linear PEtOx even though the cloud points of the polymers in water differ. This indicates that the architecture does not significantly influence the effect of the Hofmeister ions, even though there is a difference in the absolute

引用

页码：724 / 728

页数：5

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