聚丙烯固相接枝物的结晶行为  

Crystallization Behavior of the Graft Copolymers of PP

作　　者：刘振兴[1] 林少全[1] 黎清容 冯开才[1] 黄月娥[1] 

机构地区：[1]中山大学化学与化学工程学院,广东广州510275

出　　处：《功能高分子学报》2000年第1期19-23,共5页Journal of Functional Polymers

基　　金：广东省自然科学基金! (96 0 0 8号 )资助项目

摘　　要：用固相接枝法合成了聚丙烯接枝马来酸锌离聚物 (PP -g-MAZn)。利用X光、PLM和DSC研究了它的结晶行为。结果表明 :PP -g-MAZn能促进 β-型结晶的形成 ;接枝物形成的球晶尺寸变小 ,而且球晶不规整 ;接枝物的起始结晶温度移向高温 ,结晶速率加快 ;等温结晶动力学的研究表明接枝物结晶的成核方式不发生改变。Maleic zinc was successfully grafted on polypropylene powder by solid-phase grafting technology.The crystallization behavior of PP and its graft copolymers was studied by WAXD,PLM and DSC.The results indicate that the graft group can induce PP to form β type crystal,and its spherulite become smaller and imperfect.The graft copolymers are easy to crystallize at higher temperature.The isothermal crystallization kinetics indicate that the graft group can accellerate the crystallization rate of PP,and doesn`t affect the nucleation behavior.

关 键 词：聚丙烯 结晶特性 马来酸锌 固相接枝 

分 类 号：O632.12[理学—高分子化学]