Hard-to-soft transition of transparent shape memory gels and the first observation of their critical temperature studied with scanning microscopic light scattering

被引：13

作者：

Kabir, M. Hasnat ^{[1
]}

Gong, Jin ^{[1
]}

Watanabe, Yosuke ^{[1
]}

Makino, Masato ^{[1
]}

Furukawa, Hidemitsu ^{[1
]}

机构：

[1] Yamagata Univ, Grad Sch Sci & Engn, Dept Mech Syst Engn, Soft & Wet Matter Engn Lab, Yonezawa, Yamagata 9928510, Japan

来源：

MATERIALS LETTERS | 2013年 / 108卷

基金：

日本学术振兴会;

关键词：

Critical temperature; Diffusion; Optical materials and properties; Phase transformation; Polymers; Shape memory materials; HYDROGELS; BEHAVIOR;

D O I：

10.1016/j.matlet.2013.07.002

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The novel transparent shape memory gels (SMGs) have been developed by simple bulk polymerization technique, while the previous SMGs are opaque and whitish ones. It has the ability to memorize an original shape that occurs during the gelation process. It is found that the SMGs are transparent both at room and at high temperature, mechanically elastic as well as thermoresponsive despite the high water contents. By virtue of the transparency of the SMGs, we observe the mesh size of the internal network structure in nanometer scales and the phase transition of the SMGs by dynamic light scattering. This is the first observation of SMGs by light scattering as far as we know. The SMGs show a critical slowing down around the critical temperature where they change the state of phase. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：239 / 242

页数：4

共 20 条

[1] Creation of Shape-memory Gels with Inter-crosslinking Network Structure [J].