Inhomogeneity control in polymer gels

被引:77
作者
Ikkai, F
Shibayama, M [1 ]
机构
[1] Univ Tokyo, Inst Solid State Phys, Tokai, Ibaraki 3191106, Japan
[2] Nihon LOreal, Adv Res Ctr, KSP R&D D637, Kawasaki, Kanagawa 2130012, Japan
关键词
gels; light scattering; neutron scattering;
D O I
10.1002/polb.20358
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Inhomogeneities, that is, nonrelaxing frozen concentration fluctuations, are inevitably present in polymer gels because they are introduced during the crosslinking of the constituent polymer chains in a solvent. Therefore, inhomogeneities increase as the number of crosslinks increases in a gel. The ionization of polymer gels is one of the methods used to suppress inhomogeneities. However, because crosslinking also means a freezing-in of the conformation and topology of polymer chains in a solvent according to the chemistry of crosslinking, inhomogeneity control is quite sophisticated. In this article, we discuss the relationship between the inhomogeneities and the molecular/environmental parameters of polymer gels, such as the polymer concentration, the degree of crosslinking, the degree of ionization, and the interaction parameter, by considering the memory effect of gels. (C) 2005 Wiley Periodicals, Inc.
引用
收藏
页码:617 / 628
页数:12
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