聚丙烯粉料固相光接枝马来酸酐的研究

聚丙烯（ＰＰ）由于其优越的性能价格比而具有广泛的用途，但ＰＰ的非极性、易氧化等缺点使其在一些重要领域中的应用受到限制，因此需采用涂层法、等离子体处理、接枝法等方法对ＰＰ改性．其中ＰＰ表面接枝共聚法可使其脱去主链氢原子，引入极性基团，改善染色性和亲水性...

STUDY OF PHOTOINITIATED SOLID PHASE GRAFTING MALEIC ANHYDRIDE ONTO POLYPROPYLENE POWDER

MAH is grafted on PP powder surface by photoinitiated solid phase graft copolymerization with BP or MK as photosensitizer.The grafting degree,which is influenced by factors of the concentration of photosensitizer,reaction temperature,irradiation time,and surface treatment of PP is studied.The grafting extent and crystal structure of MAH_gPP are characterized by XPS,WAXD and FT IR.Results indicated the grafting degree increases with the concentration of MK,the preferred reaction temperature is 24℃.After plasma treating and the first grafting of PP surface,the adsorption of the monomer on PP surface increases.The contact state between the monomer and PP macromolecule is improved and the grafting degree is increased also.