Inhomogeneity control in polymer gels
Inhomogeneity control in polymer gels
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DOI：
10.1002/polb.20358
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发表时间：
2005-03-15
影响因子：
--
通讯作者：
Shibayama, M
中科院分区：
文献类型：
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作者：
Ikkai, F;Shibayama, M
不均匀性，即非松弛冻结浓度波动，是不可避免地存在于聚合物凝胶，因为它们是在溶剂中的组成聚合物链的交联过程中引入的。因此，不均匀性随着凝胶中交联数目的增加而增加。聚合物凝胶的电离是用于抑制不均匀性的方法之一。然而，由于交联也意味着根据交联化学在溶剂中聚合物链的构象和拓扑结构的冻结，因此不均匀性控制是相当复杂的。在本文中，我们讨论了聚合物凝胶的不均匀性与分子/环境参数，如聚合物浓度，交联度，电离度和相互作用参数之间的关系，考虑凝胶的记忆效应。(C)2005 Wiley Periodicals，Inc.
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.