两性聚丙烯酰胺水分散体系的制备.pdfVIP

31 4 ( ) Vol.31 No. 4 2010 8 Journal of Qingdao University of Science and Technology(Natural Science dition) Aug.2010 :2010) , * ( , 266042) : 以丙烯酰胺(AM) 甲基丙烯酰氧乙基三甲基氯化铵(DMC) 以及丙烯酸(AA) 为 单体,聚甲基丙烯酰氧乙基三甲基氯化铵(PDMC) 为分散稳定剂, 2, 2偶氮( 2脒基丙 烷) 二盐酸盐(V50) 为引 剂, 在硫酸铵水溶液中成功制备了两性聚丙烯酰胺( am PAM) 考察了分散稳定剂相对分子质量反应介质 pH 值反应温度以及搅拌速度对水 分散体系的影响, 并用红外光谱仪以及扫描电镜对产品结构进行表征研究得到合成两 4 4 性聚丙烯酰胺水分散体系的较佳工艺条件: PDMC 的相对分子质量30 10 ~ 46 10 , - 1 反应介质的pH 50~ 65,反应温度55~ 65 ! , 搅拌速度75~ 125 r ∀ min ,所得体系相 界面明显, 颗粒呈球形 : 两性聚丙烯酰胺; 水分散聚合; 制备 : T Q 316. 3 : A Preparation of Acrylamidebased Terpolymer via Aqueous Dispersion Polymerization LIU Hanlei, WU umin ( College of Chemical ngineering, Qingdao University of Science and Technology, Qingdao 266042, China) Abstract: Amphoteric terpolymers composed of acrylamide ( AM) , acrylic acid ( AA) and 2methylacryloylxyethyl trimethyl ammonium chloride ( DMC) were prepared via freeradical dispersion polymerization in aqueous ammonium sulfate media using 2, 2 azobis (2methylpropionconidine) dihydrochloride (V50) as initiator and poly (2meth ylacryloylxyethyl trimethyl ammonium chloride) ( PDMC) as cationic polymeric stabiliz er. T he influences of the PDMC molecular weight, pH value of reaction medium,reac tion temperature and stirring speed on the dispersion system were systemically investiga ted. T he structurewas studied by FTIR and scanning electron microscope ( S M) . T he dispersions had obviou