| 介孔材料对乳液聚合稳定性的影响 |
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| 引用本文： | 陈正吉,白蕊,魏志波,张发爱.介孔材料对乳液聚合稳定性的影响[J].胶体与聚合物,2012,30(2):55-57. |
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| 作者姓名： | 陈正吉 白蕊 魏志波 张发爱 |
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| 作者单位： | 桂林理工大学材料科学与工程学院 广西桂林541004 |
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| 基金项目： | 国家自然科学基金，教育部留学回国人员科研启动基金 |
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| 摘 要： | 研究了十二烷基硫酸钠(SDS)在不同介孔材料(MCM-41、MCM-48、SBA-15)存在下的临界胶束浓度(CMC),讨论了介孔材料对间歇乳液聚合的影响。研究表明:孔径最大的介孔材料SBA-15存在下SDS的CMC增加最多;在聚合体系中加入介孔材料对单体转化率没有影响,但增加了乳液聚合时的凝聚率,其中使用小孔径的MCM-41凝聚物较少,而颗粒较大的MCM-48凝聚物较多,同时所得乳液聚合物的分子量下降,分子量分布变宽。
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| 关 键 词： | 介孔材料 临界胶束浓度 乳液聚合 |
Effects of Mesoporous Materials on the Stability of Emulsion Polymerization |
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| CHEN Zheng-Ji
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BAI Rui
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WEI Zhi-Bo
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ZHANG Fa-Ai.Effects of Mesoporous Materials on the Stability of Emulsion Polymerization[J].Chinese Journal of Colloid and Polymer,2012,30(2):55-57. |
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| Authors: | CHEN Zheng-Ji BAI Rui WEI Zhi-Bo ZHANG Fa-Ai |
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| Affiliation: | (College of Material Science and Engineering Guilin University of Technology Guilin 541004) |
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| Abstract: | Mesoporous materials MCM-41,MCM-48 and SBA-15 were prepared.Effects of type of mesoporous materials on the critical micelle concentration（CMC） of dodecyl sodium sulfate（SDS） and batch emulsion polymerization were studied in this paper.The results showed that adding the mesoporous materials to the polymerization system increased the CMC of SDS,which led to the batch emulsion polymerization unstable,the coagulum increased;using MCM-41 with small pore size produced smaller amount of the coagulum,while MCM-48 with large particle size produced large amount of coagulum.The adding of mesoporous material did not affect the monomer conversions.Additionally,the molecular weight of polymer reduced and its distribution broadened. |
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| Keywords: | Mesoporous CMC Emulsion Polymerization Molecular Weight |
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