Studies　on　the　Crystallization　Behavior　of　Polypropylene　Solid　Phase　Grafted　Maleic　Anhydride  

作　　者：Wang Jingyuan Yu Xiaoqiang Liu Zhiqiang Qin Dongqi Li Yuwei Tang Xinyi (Department of Chemistry, Jilin University, Changchun, 130023) 

出　　处：《分子科学学报》1996年第3期195-203,共9页Journal of Molecular Science

摘　　要：ＳｔｕｄｉｅｓｏｎｔｈｅＣｒｙｓｔａｌｌｉｚａｔｉｏｎＢｅｈａｖｉｏｒｏｆＰｏｌｙｐｒｏｐｙｌｅｎｅＳｏｌｉｄＰｈａｓｅＧｒａｆｔｅｄＭａｌｅｉｃＡｎｈｙｄｒｉｄｅＳｔｕｄｉｅｓｏｎｔｈｅＣｒｙｓｔａｌｌｉｚａｔｉｏｎＢｅｈａｖｉｏｒｏｆＰｏｌｙｐｒ...Polypropylenes grafted maleic anhydride with different graft ratio have been prepared,and their isothermal crystallization kinetics have been investigated by means of DSC.The physical and chemical mechanisms that the malei anhydride reduces the surface free energy of radial growth of PP spherulite, increases its crystallization rate and decreases its crystallinity, are demonstrated. The influence of maleic anhydride grafting in PP on mechanism of spherulite growth and nucleation is discussed.

关 键 词：POLYPROPYLENE maleic ANHYDRIDE graft COPOLYMERIZATION ISOTHERMAL CRYSTALLIZATION SPHERULITE growth surface free energy nucleation. 

分 类 号：O625[理学—有机化学]