聚氨酯微凝胶粒子在稀溶液中的行为  

THE STUDY OF BEHAVIOR OF POLYURETHANE MICROGELS IN DILUTE SOLUTION

作　　者：杨晓英[1] 陈胜男[1] 梁晓勇[1] 芮嘉明[1] 姜萍[1] 安英丽[1] 左榘[1] 栗方星[1] 

机构地区：[1]南开大学吸附分离功能高分子材料国家重点实验室南开大学化学院,天津300071

出　　处：《高分子材料科学与工程》2004年第6期169-172,共4页Polymer Materials Science & Engineering

摘　　要：利用激光光散射检测手段,研究了具有交联结构的大分子即微凝胶在稀溶液中的行为,发现微凝胶在溶液中的行为与线型大分子有很大区别。文中所合成的微凝胶在溶液中极容易形成分子簇,并且分子簇的形成与解离处于不平衡状态。微凝胶粒子的粒径及其分布与微凝胶的交联度、溶液浓度以及溶解时间相关。The behavior of macromolecules with crosslinked structure (i.e. microgels) in dilute solution was study by laser light scattering (LLS) in this paper, and the great difference of solution behavior between microgels and linear macromolecules was found. The microgels synthesized in this paper is very preferred to form molecular clusters in solution, and the formation and disassociation of molecular clusters is off balance. The dimension and the dimension distribution of the microgels particles is related to the crosslinking degree of microgels, the solution concentration and the time of solution.

关 键 词：分子内交联大分子 微凝胶 分子间反应 分子内反应 激光光散射 

分 类 号：TQ323.8[化学工程—合成树脂塑料工业]