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›› 2008, Vol. 8 ›› Issue (5): 908-913.

• 过程与工艺 • 上一篇    下一篇

DMDAAC-AM反相微乳液体系的制备及聚合

岳钦艳 司晓慧 高宝玉 王晓娜 王元芳 李春晓 倪寿清   

  1. 山东大学环境学院 山东大学环境科学与工程学院 山东大学环境科学与工程学院 山东大学环境科学与工程学院
  • 收稿日期:2008-07-14 修回日期:2008-08-20 出版日期:2008-10-20 发布日期:2008-10-20
  • 通讯作者: 岳钦艳

Preparation and Polymerization of Inverse Microemulsion System of Dimethyl Diallyl Ammonium Chloride-Acrylamide

YUE Qin-yan GAO Bao-yu   

  1. School of Environmental Science and Engineering, Shandong University Environmental Science and Engineering Institute, Shandong Univ.
  • Received:2008-07-14 Revised:2008-08-20 Online:2008-10-20 Published:2008-10-20
  • Contact: YUE Qin-yan

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摘要： 以非离子表面活性剂Span-80和OP-10为复配乳化体系，煤油为油相，二甲基二烯丙基氯化铵(DMDAAC)和丙烯酰胺(AM)为单体，采用电导法和目测法相结合的方式，考察了乳化剂的亲水疏水平衡(HLB)值、水相单体浓度和配比、电解质、温度和乳化剂浓度等因素对体系稳定性和水相增溶量的影响. 结果表明，HLB为7.70、水溶液中单体浓度为60%、DMDAAC/AM摩尔比为0.2、水相中甲酸钠浓度为1.25%时，体系的电导率变化较为平稳，增溶水量也较多，温度的升高对体系的稳定性有反作用. 对该体系进行聚合，可得到澄清稳定的聚合物微胶乳. 比较聚合前后体系的粒径分布发现，聚合物粒子的体积明显增大，表明聚合过程符合单体扩散和胶束碰撞两种机理.

关键词: 反相微乳液聚合, 电导率, 增溶量, 粒径分布

Abstract: Taking kerosene as oil phase, dimethyl diallyl ammonium chloride (DMDAAC) and acrylamide (AM) as monomers, based on the emulsifying system comprised of nonionic surfactants Span-80 and OP-10, the effects of hydrophile-lipophile balance (HLB) value of emulsifier, monomers concentration and content in water, addition of electrolyte, temperature and emulsifier concentration on the stability of the system and solubilization capacity of aqueous phase were studied by conductivity method and visual observation. The results showed that the conductivity changed slightly and the solubilization capacity was large at 7.70 of HLB value, 60%(w) of monomers concentration in water, 0.2 of molar ratio of DMDAAC to AM, and 1.25%(w) of HCOONa concentration in water. The increase of temperature had a negative effect on the systematic stability. Polymer microemulsion with high stability and clarity was obtained after polymerization. The particle size increased notably after polymerization via particle size analysis, which could be interpreted by the mechanisms of monomer diffusion and micelle collision.

Key words: inverse microemulsion polymerization, conductivity, solubilization, particle size distribution

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