含磺基甜菜碱基团聚丙烯酰胺的合成及其溶液性质
Synthesis and Solution Properties of Polyacrylamide Containing Sulfobetaine Groups
Abstract
用丙烯酰胺(AM)、n,n-二甲基丙烯酰胺(dMAM)、[3-(甲基乙烯酰胺)丙基]二甲基-(3-磺酸)铵(dMMPPS)和[2-(甲基丙烯酰基氧基)乙基]二甲基-(3-磺酸丙基)氢氧化铵(dMAPS)单体通过氧化还原引发剂引发自由基聚合合成AM-dMMPPS、AM-dMAM-dMMPPS、AM-dMAPS和AM-dMAM-dMAPS 4种两性离子共聚物,并对两性离子聚合物进行表征和性能评价.研究结果表明,实验合成的4种共聚物AM-dMMPPS、AM-dMAMdMMPPS、AM-dMAPS和AM-dMAM-dMAPS都有增黏、抗盐、耐温的效果.在相同的反应条件下,在合成的共聚物中,AM-dMMPPS增黏、抗盐、耐温的效果最佳,其比浓黏度达36.8,dl/g. Four kinds of zwitterionic copolymers(AM-DMMPPS,AM-DMAM-DMMPPS,AM-DMAPS and AMDMAM-DMAPS) were synthesized by free radical copolymerization of acrylamide(AM), N, Ndimethylacrylamide(DMAM),[3-(methacryloylamino)propyl]dimethyl(3-sulfopropyl) ammonium hydroxide inner salt(DMMPPS)and [2-(Methacryloyloxy)ethyl]dimethyl-(3-sulfopropyl)ammonium hydroxide(DMAPS).The copolymers were characterized and their solution properties were evaluated.The results show that the existence of the copolymers enhances the viscosity of the aqueous solution and the copolymers exhibit favorable salt resistant and thermal stable properties.At the same condition of copolymerization,in all synthesized copolymers,the AMDMMPPS copolymer has the most excellent properties of aqueous thickening and heat and salt resistant effect,and the highest reduced viscosity of the copolymer solution is 36.8,dL/g.