摘要
用改进的晶格键渗流模型研究了溶剂对化学凝胶化过程的影响 ,引进紧邻不饱和单元相互作用参数 Z来描述溶剂的品质。计算机模拟结果表明 ,溶剂品质对凝胶化时间、簇平均尺寸、簇尺寸分布等有明显影响。临界指数 β、γ和 ν,特别是 γ和 ν在不同溶剂中有不同的数值 。
Effects of solvent quality on the chemical gelation processes were studied by a improved lattice bond percolation model. A nearest neighbour interaction parameter Z between unsaturated polymeric units were introduced to describe the solvent quality. The results of the computer simulation show that the gelation time, the clusters average size and the clusters size distribution are notably affected by the solvent quality. The critical exponents β , γ and ν especialy γ and ν have different values in different solvents. This suggests that the chemical gelation processes in different solvents are nonuniversal.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2001年第1期30-34,共5页
Polymer Materials Science & Engineering
关键词
化学凝胶化
计算机模型
溶剂效应
渗流模型
临界指数
chemical gelation
computer simulation
solvent effect
percolation model
critical exponent
