摘要
过氧化二异丙苯（ＤＣＰ）在聚苯乙烯（ＰＳ）和聚乙烯（ＰＥ）熔体中诱导了大分子自由基的反应．ＰＥ大分子自由基的主要反应方式是偶合扩链，而ＰＳ大分子自由基的反应导致断链．加入多官能团单体可以抑制ＰＳ大分子自由基的降解．对质量配比为８０／２０的ＰＳ／ＬＬＤＰＥ（聚苯乙烯／线性低密度聚乙烯）反应挤出共混物分析的结果表明：在共混体系相界面上ＤＣＰ和多官能团单体可促进ＰＳ／ＰＥ接枝共聚物的形成，改善了相容性．
Polystyrene(PS) and polyethylene(LDPE, HDPE, LLDPE) have been blended by reactive extrusion in the presence of dicumyl peroxide(DCP). The melt flow rate values showed that PE macromolecular radicals mainly experienced coupling reaction with each other, while PS preferred degradation, giving rise to chain scission. Addition of polyfunctional monomers during the extrusion could retard the degradation of PS. The results of solvent extraction, IR and DSC measurements of the blends showed that DCP and trihydroxymethylpropane trimethylacrylic acid together could induce an interfacial grafting of PS and PE, that promoted the compatibility of PS/LLDPE blend.
出处
《应用化学》
CAS
CSCD
北大核心
1999年第3期53-56,共4页
Chinese Journal of Applied Chemistry
关键词
聚苯乙烯
聚乙烯
反应性挤出共混
共混物
polystyrene,polyethylene,reactive extrusion blending,polyfunctional monomer
