两性聚丙烯酰胺水分散体系的制备 |
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引用本文: | 刘含雷,武玉民.两性聚丙烯酰胺水分散体系的制备[J].青岛科技大学学报,2010,31(4):371-375. |
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作者姓名: | 刘含雷 武玉民 |
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作者单位: | 青岛科技大学化工学院,山东青岛266042 |
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基金项目: | 国家自然科学基金项目,山东省自然科学基金项目 |
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摘 要: | 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(V-50)为引发剂,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30×104~46×104,反应介质的pH5.0~6.5,反应温度55~65℃,搅拌速度75~125 r.min-1,所得体系相界面明显,颗粒呈球形。
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关 键 词: | 两性聚丙烯酰胺 水分散聚合 制备 |
Preparation of Acrylamide-based Terpolymer via Aqueous Dispersion Polymerization |
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Abstract: | Amphoteric terpolymers composed of acrylamide(AM),acrylic acid(AA) and 2-methylacryloylxyethyl trimethyl ammonium chloride(DMC) were prepared via free-radical dispersion polymerization in aqueous ammonium sulfate media using 2,2′-azobis(2-methylpropionconidine) dihydrochloride(V-50) as initiator and poly(2-methylacryloylxyethyl trimethyl ammonium chloride)(PDMC) as cationic polymeric stabilizer.The influences of the PDMC molecular weight,pH value of reaction medium,reaction temperature and stirring speed on the dispersion system were systemically investigated.The structure was studied by FT-IR and scanning electron microscope(SEM).The dispersions had obvious sphere-phase boundaries and the suitable reaction conditions were as follows: PDMC molecular weight 30×104—46×104,pH value of reaction medium 5.0—6.5,reaction time 55—65 ℃,stirring speed 75—125 r·min-1. |
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Keywords: | amphoteric polyacylamide aqueous dispersion polymerization synthesis |
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