摘要
以聚乙二醇(Mr分别为200,400)和甲基丙烯酸进行单酯化反应,所得单酯再与三溴化磷进行溴化反应合成了一种新的两端具有功能团的不饱和溴化物,即溴代甲基丙烯酸单聚乙二醇酯(BPEG-MMA).研究了溴化反应中反应物物质的量比、反应物浓度、温度对溴代反应的影响.初步研究了产物的电导率和流变性.结果表明:30℃时,BPEG(400)-MMA的黏度为0.17 Pa.s,BPEG(200)-MMA的黏度为0.35 Pa.s;30℃时前者的电导率达到6.17×10-5s/cm,后者为1.74×10-3s/cm.
The bromo-polyethylenegylcol-monomethacrylate （BPEG-MMA） was synthesized by two steps. Firstly, methylacrylic acid was esterified with polyethylene glycol （PEG, M= 200,400） to give polyethyleneglycol-monomethacrylate （PEG-MAA） Secondly, treatment of PEG-MA with phosphorus tribromide gave the aim product. The effects of different ratio of reacting material, concentration and temperature were studied in the bromination reactions. Besides, the conductivities and rheologic properties were studied . At 30 ℃, the viscosity of BPEG（400）-MMA was 0. 17 Pa·s and BPEG（200）-MMA, 0. 35 Pa·s. At 30 ℃ ,the conductivity of BPEG（400）-MMA are 6.17 × 10^-5 s/cm and BPEG（200）-MMA , 1.74 × 10^-3 s/cm.
出处
《江南大学学报（自然科学版）》
CAS
2007年第3期362-365,共4页
Joural of Jiangnan University (Natural Science Edition)
基金
科技部攻关项目(2005300)
关键词
酯化
溴代
电导率
流变性
esterification
brominate
conductivity
viscosity
