作　　者： ;

机构地区： 嘉应学院化学与环境学院

出　　处： 《嘉应学院学报》 2005年第6期21-26,共6页

摘　　要： 以二步水溶液分散聚合法制备了具有温度及pH值双重响应性能的核-壳单分散纳米微凝胶,对微凝胶的形态、结构及粒径分布进行了表征,并采用动态光散射对其溶胀性能进行了研究,发现高度溶胀的P4VP壳层会对核的充分溶胀带来一定限制,并使其溶胀率下降. Narrowly distributed core - shell microgels with temperature - and pH- sensitivity have been successfully prepared by a two - step aqueous dispersion polymerization . The morphology, structure and size distributions of resultant core - shell particles were deter- mined. The deswelling behavior investigated by dynamic laser light scattering shows that highly cross- linked P4VP shell will restrict the ,swelling degree of the lightly cross- linked PNIPAM core, resulting in a decrease in the swelling ratio of the whole core - shell particles.

关 键 词： 响应性凝胶 核 壳结构 受限溶胀 二步水溶液分散聚合

领　　域： [理学] [理学]