文献类型：期刊文章

作　　者：李丹[1,2] 阎卫东[3] 杨振忠[1] 张建明[1]

机构地区：[1]中国科学院化学研究所分子科学中心高分子物理与化学国家重点实验室 [2]大庆石油学院石化系安达151400 [3]河北工业大学化工学院高分子科学与工程研究所

出　　处：《高分子学报》

基　　金：国家自然科学基金资助项目 (基金号 2 0 0 2 30 0 3);中科院化学所分子科学中心创新基金资助项目

年　　份：2001

卷　　号：11

期　　号：5

起止页码：561-563

语　　种：中文

收录情况：AJ、BDHX、BDHX2000、CAS、CSCD、CSCD2011_2012、IC、JST、PL、RCCSE、SCI-EXPANDED(收录号：WOS:000171853600001)、SCIE、SCOPUS、WOS、ZGKJHX、核心刊

摘　　要：Monodispersed polystyrene latexes (100～500 nm) were prepared using seed emulsion polymerization.Hard and ordered polystyrene colloidal crystals were obtained by ambient drying the monodispersed polystyrene dispersions.Polystyrene colloidal crystals were chemically modified by controlled sulfonation with sulfuric acid to derive a novel macro ordered hydrogels including ordered hydrogels and core/shell hydrogels,in which sulfuric acid and sulfone groups are responsible for the hydrophilic and crosslinking performances,respectively.The chemical structure and morphologies of the hydrogels were characterized by FT IR.It is shown that at a given concentration of sulfuric acid,the structural features of the samples are controlled by sulfonation time and temperature.The modification starts from the outer layer of polystyrene spheres of the colloidal crystals and increases both in reaction rate and sulfone group amount with temperature.A preliminary mechanism of the sulfonation process to prepare the ordered structures was proposed.

关 键 词：磺化聚苯乙烯 胶体晶  有序水凝胶  红外光谱 磺化反应机理  浓硫酸 聚苯乙烯 改性

分 类 号：O657.3]