| 微波辐射无皂乳液聚合制备单分散热敏性微球 |
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| 引用本文： | 胡晓熙,李磊,陈浩,崔虹,金晶. 微波辐射无皂乳液聚合制备单分散热敏性微球[J]. 胶体与聚合物, 2005, 23(2): 27-29 |
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| 作者姓名： | 胡晓熙 李磊 陈浩 崔虹 金晶 |
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| 作者单位： | 湖北大学化学与材料科学学院,武汉,430062 |
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| 基金项目： | 湖北大学大学生科技立项基金 |
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| 摘 要： | 在微波辐射条件下苯乙烯(St)和N-异丙基丙烯酰胺进行无皂乳液聚合,结果表明所制备的微球粒径小于150nm且为单分散。利用透射电子显微镜(TEM)观察微球形态及粒径。通过动态激光光散射粒度仪(PCS)考察微球的热敏性,微球粒径随温度发生变化。
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| 关 键 词： | 微波辐射 微球 无皂乳液聚合 N-异丙基丙烯酰胺 |
| 修稿时间： | 2005-01-08 |
Monodisperse thermosensitive particles prepared by emulsifier-free emulsion polymerization with microwave irradiation |
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| HU Xiaoxi,Li Lei,Chen Hao,Cui Hong,Jin Jing. Monodisperse thermosensitive particles prepared by emulsifier-free emulsion polymerization with microwave irradiation[J]. Chinese Journal of Colloid and Polymer, 2005, 23(2): 27-29 |
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| Authors: | HU Xiaoxi Li Lei Chen Hao Cui Hong Jin Jing |
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| Affiliation: | Faculty of chemistry and material science Hubei University Wuhan 430062 |
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| Abstract: | The emulsifier-free emulsion polymerization of styrene (St) and N-isopropylacrylamide (NIPAAm) was successfully carried out with microwave irradiation, and the monodisperse thermoresponsive poly (styrene-co-N-isopropylacrylamide) (poly(St-co-NIPAAm)) particles with diameters in the range 100~130nm were prepared. The morphology?size and size distribution of the poly(St-co-NIPAAm) particles were characterized by transmission electron microscopy (TEM) and photon correlation spectroscopy (PCS) respectively. The hydrodynamic diameters of poly(St-co-NIPAAm) particles were decreased as the temperature increased from 25℃ to 40℃, and poly (St-co-NIPAAm) particles collapsed remarkably at 32℃, which is the lower critical solution temperature (LCST) of the poly(N-isopropylacrylamide) (PNIPAAm). |
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| Keywords: | Microwave irradiation Particle Emulsifier-free emulsion polymerization N-isopropylacrylamide |
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