磁场作用下异戊二烯在四氟乙烯-丙烯共聚物表面的光化学接枝反应  

THE PHOTOCHEMICAL GRAFT COPOLYMERIZATION OF ISOPRENE ON THE SURFACE OF TETRAFLUORO-ETHYLENE-PROPYLENE COPOLYMER UNDER MAGNETIC FIELD

作　　者：黄骏廉[1] 吴海新[1] 

机构地区：[1]复旦大学材料科学研究所

出　　处：《高分子学报》1989年第6期731-734,共4页Acta Polymerica Sinica

摘　　要：我们已经报道了异戊二烯在四氟乙烯-丙烯共聚物(四丙共聚物)的光化学接枝反应,并且证实了该反应是按三重态机理进行的。但是无论是用二苯甲酮、蒽醌还是安息香作为引发剂,异戊二烯的相对接枝率都相当低,一般不超过40％。当相同体系的反应在外磁场中进行时,我们发现了一些有趣的现象,第一,异戊二烯的接枝率提高得很快,第二,接枝链中3,4-聚合的产物大大增加。这样,通过异戊二烯在四丙共聚物表面的接枝。The photochemical graft copolymerization of isoprene on the surface of tetrafluoroethylene-propylene copolymer was effected by external magnetic field. The graft ratio of the system using benzophenone as initiator in the presence of 1.2 Tesla of external magnetic field is more than three times than in the absence of magne tic field. The 3,4-polymerized contents in po-lyisoprene were increased greatly. The causes which led to above-mentioned phenomena were discussed.

关 键 词：磁场 异戊二烯 光化学接枝 四氟乙烯-丙烯共聚物 

分 类 号：O632.21[理学—高分子化学]