高密度聚乙烯粉末的电子束辐射接枝

ELECTRON BEAM IRRADIATION INDUCED GRAFT POLYMERIZATION OF POLYETHYLENE POWDER

高密度聚乙烯粉末的电子束辐射接枝王勇，黄劲，李瑞海（成都科技大学纺织工学院，成都６１００６５）（成都科技大学高分子材料系６１００６５）关键词：ＨＤＰＥ粉末，电子束辐射，接枝聚合本文采用电子束予辐射法使聚乙烯粉末表面产生活性中心，然后通过液－固相接枝共...

The graft polymerization of maleic anhydride(MA) onto preirradiated HDPE powder was studied. Irradiations were carried out in vacuum or in air at room temperature to total doses rangingfrom 1 Mrad to 8 Mrad. Infrared spectrascopy(IR)showed the existence of HDPE-graft-MA, electron spin resonance(ESR )was used to diagnose the type of radicals produced after irradiation invacuum or air environments.Effeets of radical type and preirradiation dose on the percent graftwere discussed. According to the DSC analysis, the graft reaction oceurred mainly in the amorphousregion.