聚乙烯的化学改性——丙烯酸在聚乙烯上的接枝共聚及其表征

The Modification of Polyethylene——Graft Polymerization of Acrylic Acid onto Polyethglene and Its Characterization

在二甲苯溶液中以过氧化苯甲酰为引发剂研究了丙烯酸在聚乙烯上的接枝共聚。讨论了反应温度、单体浓度和引发剂浓度对接枝率的影响。用红外光谱、ＸＰＳ、薄层色谱和接触角证实了接枝物的存在。又制备了接枝物钠盐。

The graft copolymerization of acrylic acid (AA) onto low density polyethylene(LDPE) with benzoyle peroxide (BPO) as initiator in anhydrous xylene was studied. The influence factors, such as reaction temperature and the concentrations of AA and BPO, on the extent of grafting were discussed. The existence of graft copolymer was verified by infrared spectra (IR), X ray photoelectron spectroscopy (XPS), thin layer chromatography (TLC) and contact angle. The sodium salt of graft copolymer was prepared.