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磺化聚苯乙烯胶体晶的红外光谱分析
引用本文:李丹,阎卫东,等.磺化聚苯乙烯胶体晶的红外光谱分析[J].高分子学报,2001,10(5):561-563.
作者姓名:李丹  阎卫东
作者单位:[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,北京100080 [2]河北工业大学化工学院高分子
基金项目: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
摘    要:单分散乳胶体系可以通过自组装形成有序的胶体晶结构 ,在窄波段光过滤器1] 、生物医学传感器2 ] 、智能化学传感器3] 等领域具有重要的应用价值 .最近 ,人们以此有序结构作为模板 ,制备了有序孔材料4~ 7] .另外 ,此有序结构在仿生学如模拟蛋白石等有序结构等方面也具有重要意义8] .但是 ,一般的单分散体系如聚苯乙烯体系所形成的有序结构都属于硬性材料 ,缺乏对外场的响应特性 .此外 ,微球表面没有功能性基团 ,很难与其它物质兼容 ,这使得其作为模板合成其它复合材料的潜力大大降低 .本实验室通过对聚合物胶体晶进行改性 ,使其成为功…

关 键 词:磺化聚苯乙烯  胶体晶  有序水凝胶  红外光谱

ANALYSIS OF FT-IR SPECTRA OF THE SULFONATED POLYSTYRENE COLLOIDAL CRYSTALS
LI Dan ,YAN Weidong ,YANG Zhenzhong ,ZHANG Jianming.ANALYSIS OF FT-IR SPECTRA OF THE SULFONATED POLYSTYRENE COLLOIDAL CRYSTALS[J].Acta Polymerica Sinica,2001,10(5):561-563.
Authors:LI Dan    YAN Weidong  YANG Zhenzhong  ZHANG Jianming
Institution:LI Dan 1,3,YAN Weidong 2,YANG Zhenzhong 1,ZHANG Jianming 1
Abstract: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.
Keywords:Sulfonated polystyrene  Colloidal crystals  Ordered hydrogels  FT  IR
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