| 聚(N-乙烯基异丁酰胺)接枝聚苯乙烯微球的合成研究 |
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| 引用本文： | 陈瑜,陈明清,刘晓亚,杨成.聚(N-乙烯基异丁酰胺)接枝聚苯乙烯微球的合成研究[J].精细化工,2002,19(2):118-120. |
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| 作者姓名： | 陈瑜 陈明清 刘晓亚 杨成 |
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| 作者单位： | 江南大学化学与材料工程学院,江苏,无锡,214036 |
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| 基金项目： | 教育部《高等学校骨干教师资助计划》(教技司 2 0 0 0 -65 )，留学回国服务中心资助项目 (教外司留 2 0 0 0 -3 67)~~ |
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| 摘 要： | 合成了数均相对分子质量为 35 0 0和 6 30 0的两种聚 (N 乙烯基异丁酰胺 ) (PNVIBA)大分子单体 ,并以此大分子单体与苯乙烯 (St)在V(乙醇 )∶V(水 ) =7∶3的混合溶剂中进行自由基分散共聚 ,得到了稳定分散的PNVIBA接枝聚苯乙烯 (PSt)高分子微球。研究发现微粒的粒径随聚合体系中大分子单体相对分子质量和质量浓度的增加而减小 ,并发现当混合溶剂中水的体积分数增加到 ρ(水 ) =35 %时 ,微球的形态发生明显变化。
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| 关 键 词： | 聚(N乙烯基异丁酰胺) 大分子单体 聚苯乙烯 微球 |
| 文章编号： | 1003-5214(2002)00-0118-03 |
Synthesis of Poly (N-vinylisobutyramide) Grafted Polystyrene Composite Microspheres |
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| CHEN Yu,CHEN Ming qing,LIU Xiao ya,YANG Cheng.Synthesis of Poly (N-vinylisobutyramide) Grafted Polystyrene Composite Microspheres[J].Fine Chemicals,2002,19(2):118-120. |
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| Authors: | CHEN Yu CHEN Ming qing LIU Xiao ya YANG Cheng |
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| Abstract: | Poly( N vinylisobutyramide) (PNVIBA) macromonomers with M n=3500 and 6300 were synthesized by using azoisobutyronitrile as initiator,2 mercaptoethanol as chain transfer agent and p chrolomethylstyrene as end capping agent.PNVIBA grafted polystyrene composite polymeric microspheres were prepared by free radical dispersion copolymerization of PNVIBA macromonomer and styrene in mixed solvent with the volume ratio V (ethanol)∶ V (water)=7∶3.It was indicated that the diameters of microspheres decreased as molecular weights and concentrations of the macromonomers increased.The morphology of microspheres were found changing obviously when the water volume ratio in the mixed solvent was up to 35%. |
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| Keywords: | poly( N vinylisobutyramide) macromonomer polystyrene microsphere |
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