| 反相微乳液聚合PAM在悬浮介质中的絮凝过程研究 |
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| 引用本文： | 王风贺,雷武,夏明珠,王风云.反相微乳液聚合PAM在悬浮介质中的絮凝过程研究[J].环境科学与技术,2009,32(9). |
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| 作者姓名： | 王风贺 雷武 夏明珠 王风云 |
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| 作者单位： | 1. 南京师范大学动力工程学院水处理研究所,江苏,南京,210042
2. 南京理工大学化工学院工业化学研究所,江苏,南京,210094 |
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| 基金项目： | 江苏省高校自然科学基础研究项目,胶体与界面化学教育部重点实验窀(山东大学)开放课题基金项目,南京师范大学优秀高层次人才科研启动基金项目,南京帅范大学教改项目 |
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| 摘 要： | 研究了Span80-Tween80/异辛烷/H2O反相微乳液聚合丙烯酰胺反相微乳液聚合所得到的PAM的微观结构及其在1%高岭土悬浮液的模拟废水中的絮凝过程与机理。采用电子显微镜、激光纳米粒度仪、分光光度计等测试手段,测定了PAM粒子以及与悬浮介质结合的絮体形态、粒径和粒径分布等微观结构及其絮凝性能。试验结果表明:反相微乳液聚合所制备的PAM为单分散、球形的纳米材料,粒径(D)在145～175nm之间;AMPS改性PAM与高岭土结合后,高岭土与高分子团状结构包埋在一起,透过率较大,絮凝范围宽,可以理解为高分子絮凝剂的"架桥-吸附-网捕"机理。
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| 关 键 词： | 反相微乳液 丙烯酰胺 聚合 絮凝 微观结构 |
Flocculation Process in Suspension Medium of PAM by Reverse Microemulsion Polymerization |
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| WANG Feng-he,LEI Wu,XIA Ming-zhu,WANG Feng-yun.Flocculation Process in Suspension Medium of PAM by Reverse Microemulsion Polymerization[J].Environmental Science and Technology,2009,32(9). |
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| Authors: | WANG Feng-he LEI Wu XIA Ming-zhu WANG Feng-yun |
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| Institution: | 1.Water Treatment Institute;School of Power Engineering;Nanjing Normal University;Nanjing 210042;China;2.Industrial Chemistry Institute;Nanjing University of Science and Technology;Nanjing 210094;China |
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| Abstract: | Polymer polyacrylamide(PAM)was prepared by reverse microemulsion polymerization of Span80-Tween80/isooctane/H2O,its process and mechanism of flocculation in suspension medium of 1% Kaolin were studied.Microstructures as well as the size distribution of PAM particle and flocculation properties were studied using TEM,laser nanometer measurement and spectrophotometer.Results showed that polymer of PAM prepared was mono-disperse,globular nanometer material,with diameter of PAM particle of 145nm～175nm.Kaolin was embedded in polymer when it integrated with PAM modified by AMPS,with high transmittance and wide scope of flocculation,which can be concluded by its mechanism of bridging-adsorption-net catching. |
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| Keywords: | reverse microemulsion acrylamide polymerization flocculation microstructure |
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