Issue 10, 2011
From the journal:

Soft Matter

Structure evolution and kinetics steps of the melting process of thermoreversible polymer gels†

Juying Zhou,a   Jin Yang,a   Chenglong Hu,a   Kun Yang,a   Bin Zhanga  and  Xudong Chen*a  

* Corresponding authors

a Key Laboratory for Polymer Composite and Functional Materials of the Ministry of Education, DSAPM Lab, OFCM Institute, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou, China
E-mail: cescxd@mail.sysu.edu.cn
Fax: +86-20-84113498
Tel: +86-20-84113498

Abstract

Helical junction-helix-wormlike transformation of syndiotactic polystyrene (sPS) conformations in a sPS/chloroform gel was investigated during melting process. The gel melting process involved a reversible dissociation of the network structure at low temperature and a reversible transformation process from helix to wormlike conformation at high temperature. The reaction order for the normal melting process adopted was 1. The quantitative description of the phase transformation kinetics for the melting process of sPS/chloroform gel was performed by resonance light scattering technique (RLS). Only the dissociation of the three helical junctions existed when the temperature was lower than 57 °C. As the rate-determining step, the transition from helix to wormlike conformation was identified when the temperature was higher than 57 °C. RLS proved to be an effective means for characterization of kinetic processes in polymer gels.

Graphical abstract: Structure evolution and kinetics steps of the melting process of thermoreversible polymer gels

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Supplementary files

Article information

DOI
https://doi.org/10.1039/C0SM01418D
Article type
Paper
Submitted
04 Dec 2010
Accepted
06 Mar 2011
First published
04 Apr 2011

Soft Matter, 2011,7, 5010-5019

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Structure evolution and kinetics steps of the melting process of thermoreversible polymer gels

J. Zhou, J. Yang, C. Hu, K. Yang, B. Zhang and X. Chen, Soft Matter, 2011, 7, 5010 DOI: 10.1039/C0SM01418D

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