SWELLING BEHAVIOR AND AN EVALUATION OF NETWORK STRUCTURE OF POLY(ACRYLAMIDE-co-ACRYLIC ACID) GEL
SWELLING BEHAVIOR AND AN EVALUATION OF NETWORK STRUCTURE OF POLY(ACRYLAMIDE-co-ACRYLIC ACID) GEL
复制标题
聚(丙烯酰胺-丙烯酸)凝胶的溶胀行为及网络结构评价
DOI：
10.1252/jcej.20.426
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发表时间：
1987
影响因子：
0.8
通讯作者：
Shigetaka Yamamoto
中科院分区：
文献类型：
--
作者：
Y. Nakano;Hirohito Naruoka;Shigetaka Yamamoto
已知几种聚合物凝胶通过溶剂组成、离子组成、pH、电场等的微小变化而经历剧烈的体积变化（相变）。1 - 5* 这种现象是由三种力引起的：聚合物聚合物亲和力、橡胶弹性和离子凝胶的氢离子压力。因此，体积变化的程度取决于这些力的相对大小。当聚（丙烯酰胺-共-丙烯酸）凝胶浸入溶剂中时，部分丙烯酸可以解离成羧基（R-COO）和氢离子（H+）。氢离子像分子一样在由带负电荷的聚合物网络组成的空间中产生正压。中野等人2）已经报道了关于单体相对量的影响的初步研究
Several polymer gels are known to undergo a drastic volume change (a phase transition) by infinitesimal changes in solvent compositions, ionic composition, pH, electric field, etc.1"5* This phenomenonis brought about by three forces: polymerpolymer affinity, rubber elasticity and hydrogen-ion pressure for ionic gels. Therefore, the degree of volume change depends on the relative magnitude of these forces. When a poly(acrylamide-co-acrylic acid) gel is immersed in a solvent, part of the acrylic acid can be dissociated to carboxyl (R-COO ) and hydrogen ions (H+). The hydrogen ions act like molecules to generate positive pressure in a space consisting of a negatively charged polymer network. Nakano et al.2) have reported a preliminary study on the effects of the relative amounts of monomers