阳离子聚丙烯酰胺水包水乳液分散聚合条件的研究.pdf

石油化工
PETROCHEMICAL TECHNOLOGY
2010年第39卷第10期
阳离子聚丙烯酰胺水包水乳液分散聚合条件的研究
傅智健,彭蛲宏
(华南理工大学材料学院,东广州510640)
摘要]以丙烯醍胺(AM)和甲基内烯酰氧乙基三甲基氯化铵(DMC)为共聚单体,以聚甲基丙烯酰氧乙基三甲基氯化铵为分散
剂,在硫酸铵溶液中,以偶氮二异丁脒盐酸盐为引发剂合成了阳离子聚丙烯酰胺(CPAM)水包水乳液;研究了分散剂含量、硫酸铵
含量、单体总含量及其配比、引发剂含量、反应温度对分散聚合的影响、得到了各影响因素之间的协同规律。实验结果表明、合成
CPAM水包水乳液的最使条件为:单体总质量分数(基于反应体系)13%~17%、分散剂质量分数(基于反应体系)3.2%~3,5%
硫酸铵质量分数(基于反应体系)25%~27%、引发剂质量分数(基于两种单体)0.015%、n(AM):n(DMC)=85:15、反应温度
50℃。在此条件下合成的CPAM水包水乳液的颗粒分散性和流动性较好,稳定性较高,特性黏数和黏均相对分子质量分別达到
10.14~11.49dL/g和(5.23-6.32)x10°g/mol
关键词]例离子聚丙烯跣胺;水包水乳液;丙烯酰胺;甲基内烯酰氧乙基三甲基氯化铵;分散聚合
文章编号,1008144(2010)10-140-06「[中图分类号!TQ314.255
文献标识码]A
Preparation Conditions for Cationic Polyacrylamide Water-in-water
Emulsion by Dispersion Polymerization
Fu Zhijian, Peng Xiaohong
College of Materials Science and Engineering, South China University of Technology, Guangzhou Guangdong 510640, China
Abstract; Cationic polyacrylamide( CPAM )water-in-water emulsion was prepared from acrylamide
(AM )and dimethylaminoethyl methacrylate methyl chloride(DM) as comonomers in ammonium
sulfate solution with poly(dieth amine hyl methacrylate methyl chloride )as dispersing agent and 2, 2
azobis (2-mcthylpropionamide dihydrochloride as initiator. Effects of dispersing agent concentration
ammonium sulfate concentration. total monomers concentration. monomer mole ratio. initiator
concentration and reaction temperature on the dispersion pol merization were investigated. Experimental
results showed that under the optimal conditions: total monomers mass fraction(based on the reaction
system )13%-17%, dispersing agent mass fraction(based on the reaction system) 3.2%-3.5%
ammonium sulfate mass fraction(based on the reaction system)25-27, initiator mass fraction
( based on the two comonomers )0. 015%, n(AM): n(DMC)85: 15 and reaction temperature
50 C, particle dispersivity, fluidity and stability of the prepared CPAM water-in-water emulsion were
good, and its Intrinsic viscosity and viscosity-average relative molecular mass were 10. 14
11. 49 dl/g and (5. 23-6. 32)x 10 g/mol, respectivel
Keywords cationic polyacrylamide; water-in-water emulsion; acrylamide; dimethylaminoethyl
methacrylate methyl chloride; dispersion polymerization
阳离子聚丙烯酰胺(CPAM)水包水乳液是指丙理、石油开采、造纸、矿石浮选、污泥脱水等领域,且
烯酰胺(AM)与其他阻离子水溶性单体在一种以低效果很好,符合绿色化学的发展方向。
相对分子质量水溶性聚合物为分散剂的无机盐浴
近几年,对于阴离子及两性聚丙烯酰胺的研究
液中进行分散聚合反应得到的外观类似乳液的水相对较多,有关CPAM的研究却相对较少,而对于
分散体系。它克服了其他产品剂型难溶、污染环
收稿日期]2010-04-27;[修改稿日期]2010-07-07。
境、存在安全隐患、价格昂贵等缺点,以其特有的速
作者简介]傅智健(1985-),男,福建省泉州市人,硕士生,电话
溶、节能、环保、方便、价廉等优点成为聚丙烯酰胺13078802,电邮们,@m, scut. edu.cm。联系人:彭晓宏,电话
研发和生产的新方向。CPAM广泛应用于废水处1366896158电邮oxhpf@scut.cdu.cn