| 端羧基聚苯乙烯的合成及其应用 |
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| 引用本文： | 李谷,麦堪成,陈业海,冯开才.端羧基聚苯乙烯的合成及其应用[J].合成树脂及塑料,2007,24(2):16-18. |
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| 作者姓名： | 李谷 麦堪成 陈业海 冯开才 |
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| 作者单位： | 中山大学化学与化学工程学院,教育部聚合物复合材料及功能材料重点实验室,广东,广州,510275;中山大学化学与化学工程学院,教育部聚合物复合材料及功能材料重点实验室,广东,广州,510275;中山大学化学与化学工程学院,教育部聚合物复合材料及功能材料重点实验室,广东,广州,510275;中山大学化学与化学工程学院,教育部聚合物复合材料及功能材料重点实验室,广东,广州,510275 |
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| 基金项目： | 广东省自然科学基金重点项目(021731)，广东省科技攻关计划项目(2003B10503) |
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| 摘 要： | 以巯基乙酸为链转移剂,通过本体聚合得到低相对分子质量含端羧基的聚苯乙烯(PSCOOH),并将其用作聚苯乙烯(PS)/纳米CaCO3复合材料的分散改性剂。在链转移剂作用下可获得数均分子量约为850的PSCOOH。随着PSCOOH相对分子质量的减小,用它分散改性的PS/纳米CaCO3复合材料的拉伸强度提高,其中PSCOOH-4改性复合材料的拉伸强度提高了约15％,缺口及无缺口冲击强度略有下降。低相对分子质量分散剂有较好的增强作用。
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| 关 键 词： | 聚苯乙烯 端羧基聚苯乙烯 纳米碳酸钙 分散剂 复合材料 |
| 文章编号： | 1002-1396(2007)02-0016-03 |
| 修稿时间： | 2006-10-08 |
Synthesis of polystyrene containing carboxyl end group and its application in PS/nano-CaCO3 composites |
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| Li Gu,Mai Kancheng,Chen Yehai,Feng Kaicai.Synthesis of polystyrene containing carboxyl end group and its application in PS/nano-CaCO3 composites[J].China Synthetic Resin and Plastics,2007,24(2):16-18. |
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| Authors: | Li Gu Mai Kancheng Chen Yehai Feng Kaicai |
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| Affiliation: | School of Chemistry and Chemical Engineering, Key Laboratory of Polymeric Composites and Functional Materials of The Ministry of Education, Zhongshann University, Guangzhou 510275, China |
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| Abstract: | Polystyrene containing carboxyl end group (PSCOOH) and having relatively low molecular mass was prepared via bulk polymerization with thioglycollic acid as chain transfer agent; the resultant PSCOOH was used as dispersing modifier in PS/nano-CaCO3 composites. PSCOOH having number-average molecular mass of about 850 could be synthesized under the function of chain transfer agent. As the relative molecular mass of PSCOOH decreased, the tensile strength of PS/nano-CaCO3 composites modified by PSCOOH increased. As an example, the tensile strength of the composite modified by PSCOOH-4 rose by 15%, whereas its notched and unnotched impact strength lowered somewhat. The dispersant having lower molecular mass exhibited a greater effectiveness in improving the strength of PS/nano-CaCO3 composites. |
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| Keywords: | polystyrene polystyrene containing carboxyl end group nano-CaCO3 dispersant composite material |
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