水溶性接枝聚多糖的研究 Ⅱ.丙烯酰胺对淀粉与二甲基丙烯酸酯乙基季铵丙磺酸内盐接枝的影响

Study of Water-soluble Polysaccharose Ⅱ.Graft Copolymerization of Starch with [2-(Methacryloylox) ethyl]dimethyl(3-sulfopropyl) Ammonium Hydroxide Inner Salt

采用自由基溶液聚合法 ,以硝酸铈铵 (CAN) 酸为引发体系 ,研究了淀粉与二甲基丙烯酸酯乙基季铵丙磺酸内盐 (DMAPS)的接枝共聚反应。考察了引发剂用量、酸度、淀粉加入量、单体浓度、温度等条件对接枝反应的影响 。

The graft copolymer of starch with acrylamide (AM) and [2-(methacryloylox)ethyl]dimethyl(3-sulfopropyl) ammonium hydroxide(DMAPS) was synthesized in aqueous solution using ammonium ceric nitrate/acid redox system as the initiator. The effects of various factors, such as the concentrations of ammonium ceric nitrate, catalyst acid, starch and monomer, as well as the temperature and time, on the graft copolymerizations of starch-AM-DMAPS and starch-DMAPS, were investigated comparatively. The performance of the graft copolymers applied as clay-hydration inhibitors in oil field drilling fluid was examined. In addition, the graft copolymers were characterized by infrared analysis and elemental analysis.