EHP引发AM/DMMC反相微乳液聚合的研究

Study on AM/DMMC Inverse Microemulsion Polymerization Initiated by EHP

以油酸失水山梨醇酯Span80和壬基酚聚氧乙烯醚OP 10为乳化剂,白油为连续介质,过氧化二碳酸(2-乙基己酯)(EHP)为引发剂,进行丙烯酰胺/(2 甲基丙烯酰氧乙基)三甲基氯化铵(AM/DMMC)反相微乳液共聚合反应。研究了wM=0.25～0.50范围内单体总浓度[M]、引发剂浓度[I]、乳化剂浓度[E]对聚合速率Rp和共聚物分子量Mv的影响,得到Rp∝[M]2.47[I]0.76[E]0.19,Mv∝[M]2.05[I]-0.37[E]-0.47。测定了AM/DMMC反相微乳液共聚合中单体的竞聚率,得到rAM=0.44,rDMMC=1.31。

Inverse microemulsion polymerization of acrylamide/(2methacryloyl oxyethyl) trimethyl ammonium chloride(AM/DMMC) has been carried out with Span 80 and OP10 as the emulsifier, white oil as the continuous medium and bis(2ethylhexyl) peroxycarbonate as the initiator. The effects of monomer concentration, initiator concentration and emulsifier concentration on the polymerization rate and copolymer molecular weight at the range of higher monomer concentration(wM=0.250.50) are investigated. The polymerization rates with respect to monomer concentration, initiator concentration and emulsifier concentration are of 2.47,0.76 and 0.19 order respectively, and the copolymer molecular weights are of 2.05, 0.37 and 0.47 order respectively. The monomer reactivity ratios of AM/DMMC inverse microemulsion polymerization are determined, rAM=0.44, rDMMC=1.31.