Measuring LCSTs by novel temperature gradient methods: Evidence for intermolecular interactions in mixed polymer solutions

被引：63

作者：

Mao, HB ^{[1
]}

Li, CM ^{[1
]}

Zhang, YJ ^{[1
]}

Bergbreiter, DE ^{[1
]}

Cremer, PS ^{[1
]}

机构：

[1] Texas A&M Univ, Dept Chem, College Stn, TX 77845 USA

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2003年 / 125卷 / 10期

关键词：

D O I：

10.1021/ja029691k

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Herein we describe studies of molecular interactions in thermoresponsive polymers as they go through phase transitions in aqueous solutions. By using our recently reported linear temperature gradient setup for studying the effects of temperature on chemical processes, we demonstrate the ability to probe lower critical solution temperature (LCST) behavior with excellent precision. This method also provides a simple and convenient way to assay the LCST of solutions containing more than one polymer and follow the clouding kinetics of polymer mixtures in real time. Copyright © 2003 American Chemical Society.

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页码：2850 / 2851

页数：2

相关论文

共 16 条

[1] Molecular tailoring of thermoreversible copolymer gels: Some new mechanistic insights [J].

Badiger, MV ;

Lele, AK ;

Bhalerao, VS ;

Varghese, S ;

Mashelkar, RA .

JOURNAL OF CHEMICAL PHYSICS, 1998, 109 (03) :1175-1184

[2] POLYMER LIGANDS THAT CAN REGULATE REACTION TEMPERATURE IN SMART CATALYSTS [J].

BERGBREITER, DE ;

MARIAGNANAM, VM ;

ZHANG, L .

ADVANCED MATERIALS, 1995, 7 (01) :69-71

[3] Characterization of the LCST behaviour of aqueous poly(N-isopropylacrylamide) solutions by thermal and cloud point techniques [J].

Boutris, C ;

Chatzi, EG ;

Kiparissides, C .

POLYMER, 1997, 38 (10) :2567-2570

[4] A COMPARISON OF THERMOREACTIVE WATER-SOLUBLE POLY-N,N-DIETHYLACRYLAMIDE PREPARED BY ANIONIC AND BY GROUP-TRANSFER POLYMERIZATION [J].

FREITAG, R ;

BALTES, T ;

EGGERT, M .

JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY, 1994, 32 (16) :3019-3030

[5]

HOFFMAN A S, 1987, Journal of Controlled Release, V6, P297, DOI 10.1016/0168-3659(87)90083-6

[6]

Huang XF, 2001, ADV SYNTH CATAL, V343, P675

[7]

Incropera F.P., 1990, FUNDAMENTALS HEAT MA

[8] Development of a molecular recognition ion gating membrane and estimation of its pore size control [J].

Ito, T ;

Hioki, T ;

Yamaguchi, T ;

Shinbo, T ;

Nakao, S ;

Kimura, S .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2002, 124 (26) :7840-7846

[9] A microfluidic device with a linear temperature gradient for parallel and combinatorial measurements [J].

Mao, HB ;

Yang, TL ;

Cremer, PS .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2002, 124 (16) :4432-4435

[10] Reusable platforms for high-throughput on-chip temperature gradient assays [J].

Mao, HB ;

Holden, MA ;

You, M ;

Cremer, PS .

ANALYTICAL CHEMISTRY, 2002, 74 (19) :5071-5075