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,我 We have reported the photochemical grafting reaction of isoprene on a tetrafluoroethylene-propylene copolymer (tetrapropylacrylate) and confirmed that the reaction is carried out in a triplet mechanism. However, whether benzophenone, anthraquinone or benzoin are used as initiators, the relative grafting rates of isoprene are quite low, typically not more than 40%. When the reaction of the same system was carried out in an external magnetic field, we found some interesting phenomena. Firstly, the grafting rate of isoprene increased rapidly. Secondly, the 3,4-polymerization product in the graft chain was greatly increased increase. In this way, through the grafting of isoprene onto the surface of tetrapropylene copolymer, I