聚苯乙烯-丙烯腈/蒙脱土纳米复合材料的制备和结构  

Preparation and structure of poly(styrene-acrylonitrile)/ montmorillonite nanocomposite

作　　者：杨晋涛[1] 范宏[1] 卜志扬[1] 李伯耿[1] 

机构地区：[1]浙江大学化学工程联合国家重点实验室聚合反应工程分室

出　　处：《化工学报》2006年第12期3016-3020,共5页CIESC Journal

基　　金：国家杰出青年科学基金项目(20125617)~~

摘　　要：Poly(styrene-acrylonitrile) emulsion particles with positive charges on the surface were synthesized by emulsion polymerization using cationic surfactant octotyltrimethyl ammonium chloride (OTAC) as emulsifier.The suspension of montmorillonite was slowly dropped into the emulsion.Through the interaction between the negative charges on the montmorillonite layers and the cations on the surface of poly(styrene-acrylonitrile) particles, the montmorillonite layers and emulsion particles could assemble and absorb on each other by themselves.The change of δ voltage and particle size of the emulsion during the process of dropping was characterized, which demonstrated that the emulsion particles and montmorillonite layers absorbed on each other by the electrovalent bond and an intersectional structure was formed in the complex emulsion.Poly(styrene-acrylonitrile)/ montmorillonite nanocomposite was obtained after coagulation.The structure of nanocomposite was characterized with XRD and TEM.The results indicated that montmorillonite was exfoliated into layers with a thickness of several nanometers and uniformly dispersed in the polymer matrix.Poly （styrene-acrylonitrile） emulsion particles with positive charges on the surface were synthesized by emulsion polymerization using cationic surfactant octotyltrirnethyl ammonium chloride （OTAC） as emulsifier. The suspension of montmorillonite was slowly dropped into the emulsion. Through the interaction between the negative charges on the montmorillonite layers and the cations on the surface of poly（styrene-acrylonitrile） particles, the montmorillonite layers and emulsion particles could assemble and absorb on each other by themselves. The change of δ voltage and particle size of the emulsion during the process of dropping was characterized, which demonstrated that the emulsion particles and montmorillonite layers absorbed on each other by the electrovalent bond and an intersectional structure was formed in the complex emulsion. Poly （styrene-acrylonitrile）/ montmorillonite nanocomposite was obtained after coagulation. The structure of nanocomposite was characterized with XRD and TEM. The results indicated that montmorillonite was exfoliated into layers with a thickness of several nanometers and uniformly dispersed in the polymer matrix.

关 键 词：聚苯乙烯-丙烯腈/蒙脱土纳米复合材料 制备 结构 

分 类 号：TQ327.9[化学工程—合成树脂塑料工业]