| 热敏性聚(N-乙烯基异丁酰胺)接枝高分子微球的合成 |
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| 引用本文： | 陈明清,陈瑜,刘晓亚,杨成,明石满.热敏性聚(N-乙烯基异丁酰胺)接枝高分子微球的合成[J].高分子学报,2002(4):447-451. |
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| 作者姓名： | 陈明清 陈瑜 刘晓亚 杨成 明石满 |
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| 作者单位： | 1. 江南大学化学与材料工程学院,无锡,214036
2. 江南大学化学与材料工程学院,无锡,214036;日本鹿儿岛大学工学部,鹿儿岛,890-0065 |
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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 )，留学回国启动的资助项目 (教外司 2 0 0 0
3 67) |
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| 摘 要： | 用自由基聚合和端基反应法合成了大分子单体聚 (N 乙烯基异丁酰胺 ) (PNVIBA) ,将其与苯乙烯在乙醇 水的混合溶剂中进行分散共聚 ,得到了PNVIBA接枝聚苯乙烯 (PNVIBA g PSt)高分子微球 .用GPC、激光光散射和电子显微镜等对聚合物的分子量和微球直径及形态进行了表征 .研究结果表明 ,大分子单体PNVIBA和PNVIBA g PSt高分子微球具有明显的热敏性 ,并且发现PNVIBA g PSt微球直径和形态可通过改变反应条件加以控制 ,得到了一种新形态的亚微米级高分子微球
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| 关 键 词： | 聚(N-乙烯基异丁酰胺)大分子单体 热敏性 直径和形态控制 |
| 修稿时间： | 2001年7月27日 |
STUDY ON THERMOSENSITIVE POLY(N-VINYLISOBUTYRAMIDE) GRAFTED POLYSTYRENE NANOPARTICLES |
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| CHEN Mingqing,CHEN Yu,LIU Xiaoya,YANG Cheng,AKASHI Mitsuru.STUDY ON THERMOSENSITIVE POLY(N-VINYLISOBUTYRAMIDE) GRAFTED POLYSTYRENE NANOPARTICLES[J].Acta Polymerica Sinica,2002(4):447-451. |
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| Authors: | CHEN Mingqing CHEN Yu LIU Xiaoya YANG Cheng AKASHI Mitsuru |
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| Abstract: | Poly( N vinylisobutyramide) (PNVIBA) macromonomer was synthesized by free radical polymerization of N vinylisobutyramide in the presence of AIBN and using p chrolomethylstyrene as end capping agent.The molecular weight of PNVIBA can be controlled based on the process of prepared NVIBA oligomers by changing concentration of 2 mercaptethanol.The PNVIBA macromonomers exhibit remarkable thermosensitive properties for temperature change in aqueous solution.The PNVIBA grafted polystyrene(PNVIBA g PSt) polymeric nanoparticles were prepared by the free radical dispersion copolymerization of PNVIBA macromonomer and styrene in ethanol or ethanol/water mixed solvents.The effects of molecular weight and concentration of the macromonomer and composition of solvents on the particle size and morphology of the PNVIBA g PSt nanoparticles were studied.Changing macromonomer concentration and reaction condition could control the particle size in diameter and morphologies of the nanoparticles. |
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| Keywords: | Poly( N vinylisobutyramide) macromonomer Thermosensitivity Diameter and morphology of control |
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