| 由大分子PMMA-DPE引发制备Poly(St-alt-MAn)微球 |
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| 引用本文： | 唐天东,马育红,杨万泰. 由大分子PMMA-DPE引发制备Poly(St-alt-MAn)微球[J]. 北京化工大学学报(自然科学版), 2011, 38(1): 49-54 |
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| 作者姓名： | 唐天东 马育红 杨万泰 |
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| 作者单位： | 北京化工大学碳纤维及功能高分子教育部重点实验室,北京,100029;北京化工大学碳纤维及功能高分子教育部重点实验室,北京,100029;北京化工大学碳纤维及功能高分子教育部重点实验室,北京,100029 |
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| 基金项目： | 长江学者和创新团队发展计划 |
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| 摘 要： | 在1，1-二苯基乙烯（DPE）存在下，以甲基丙烯酸甲酯（MMA）为初始单体，偶氮二异丁腈（AIBN）为引发剂，采用本体聚合法制备出含有DPE片段的大分子引发剂PMMA-DPE；然后以PMMA-DPE 为引发剂，以苯乙烯（St）和马来酸酐（MAn）为共聚单体，乙酸异戊酯为溶剂,采用自稳定沉淀聚合法制备了单分散的聚（苯乙烯-马来酸酐）（Poly（St-alt-MAn））的微球。研究了 PMMA-DPE 的用量对聚合物微球的形态、粒径大小及分布的影响。采用 FT-IR, UV-Vis, 1H-NMR和 GPC 对产物的结构进行了表征，并用 SEM 观察了聚合物微球的形貌。结果表明，PMMA-DPE 能够引发 St 和 MAn 的共聚合，随着 PMMA-DPE用量的增加，聚合反应的转化率呈增大趋势，聚合物微球的粒径呈下降趋势，而粒径分布系数略有增大。
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| 关 键 词： | 1 1-二苯基乙烯 大分子引发剂 自稳定沉淀聚合 苯乙烯/马来酸酐 微球 |
| 收稿时间： | 2010-04-19 |
Preparation of poly (styrene-alt-maleic anhydride) microspheres initiated by the poly (methyl methacrylate) oligomer containing 1,1-diphenylethene units |
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| TANG TianDong,MA YuHong,YANG WanTai. Preparation of poly (styrene-alt-maleic anhydride) microspheres initiated by the poly (methyl methacrylate) oligomer containing 1,1-diphenylethene units[J]. Journal of Beijing University of Chemical Technology, 2011, 38(1): 49-54 |
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| Authors: | TANG TianDong MA YuHong YANG WanTai |
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| Affiliation: | Key Laboratory of Carbon Fiber and Functional Polymers, Ministry of Education, Beijing University of Chemical Technology, Beijing 100029, China |
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| Abstract: | Poly(methyl methacrylate)(PMMA) oligomers containing 1,1-diphenylethene(DPE) structural units(PMMA-DPE) have been prepared by the bulk polymerization of methyl methacrylate(MMA) in the presence of DPE with azodiisobutyronitrile(AIBN) as initiator.Narrow-disperse poly(styrene-alt-maleic anhydride) [poly(St-alt-MAn)] microspheres were subsequently obtained by metastable precipitation polymerization of styrene(St) and maleic anhydride(MAn) initiated by the PMMA-DPE,with isoamyl acetate as solvent.The structure of the copolymer was confirmed by FT-IR,UV-Vis and 1H-NMR spectroscopy and GPC.The morphology and size of the microspheres were observed by SEM.The effects of varying the amount of PMMA-DPE on the morphology,particle size and size distribution of the microspheres were investigated.When the mass percentage of PMMA-DPE (based on total monomer amount) increased,the conversion increased and the diameter of the microspheres decreased,but the distribution of diameter increased slightly. |
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| Keywords: | 1,1-diphenylethene macroinitiator metastable precipitation polymerization styrene/maleic anhydride microspheres |
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