| 聚苯乙烯-丙烯酸共聚物胶体纳米球核壳结构及其选择性溶解过程的表征 | |
| 钱骏 ; 袁俊 ; 庹新林 ; 李梦泽 ; 王晓工 ; QIAN Jun ; YUAN Jun ; TUO Xin-lin ; LI Meng-ze ; WANG Xiao-gong | |
| 2010-06-10 ; 2010-06-10 | |
| 关键词 | PS-AA胶体球 核壳结构 选择性溶解 孔结构 PS-AA latex nanosphere core-shell structure selective solution pore structure TB383.1 |
| 其他题名 | Characterization of core-shell polystyrene-acrylic acid (PS-AA) copolymer nanospheres and the selective dissolution of the pore structure |
| 中文摘要 | 本文对采用自由基乳液聚合法制备的聚苯乙烯-丙烯酸(polystyrene-acrylic acid,PS-AA)共聚物胶体纳米球进行了微结构表征。发现原始合成的聚苯乙烯胶体球具有典型的核壳结构,磷钨酸(phosphotungstic acid,PTA)优先在核壳界面聚集。中心核主要由疏水性的苯乙烯组成,外壳主要由亲水性的丙烯酸组成。甲苯能对PS-AA胶体球进行原位选择性溶解。溶解过程中,胶体球发生溶胀破裂,中心聚苯乙烯初步溶解,孔结构经历了内径由小到大,孔边缘由粗糙不规则到光滑的变化过程。胶体球形成高分子孔结构,圆孔发生了一定程度的变形。; We used transmission electron microscopy(TEM) to characterize the polystyrene-acrylic acid(PS-AA) copolymer latex nanospheres which were formed by surfactant-free emulsion polymerization.The as-prepared PS-AA latex nanospheres are of a core-shell structure,as revealed by phosphoric acid staining.The core is mainly composed of hydrophobic styrene,while the shell is mainly composed of hydrophilic acrylic acid.Immersion of PS-AA nanosphere assemblies in toluene resulted in selective dissolution.The polystyrene core in the PS-AA latex nanospheres first swelled,then the bursting of the acrylic shell led to its gradually dissolution,resulting in a porous polymer structure.The pore size increased gradually with the edge of the pore pores changed from rough to smooth and the shape became more and more spherical.; 科技部863纳米专项项目支持(No.2002AA302103) |
| 语种 | 中文 ; 中文 |
| 内容类型 | 期刊论文 |
| 源URL | [http://hdl.handle.net/123456789/61148]  |
| 专题 | 清华大学 |
| 推荐引用方式 GB/T 7714 | 钱骏,袁俊,庹新林,等. 聚苯乙烯-丙烯酸共聚物胶体纳米球核壳结构及其选择性溶解过程的表征[J],2010, 2010. |
| APA | 钱骏.,袁俊.,庹新林.,李梦泽.,王晓工.,...&WANG Xiao-gong.(2010).聚苯乙烯-丙烯酸共聚物胶体纳米球核壳结构及其选择性溶解过程的表征.. |
| MLA | 钱骏,et al."聚苯乙烯-丙烯酸共聚物胶体纳米球核壳结构及其选择性溶解过程的表征".(2010). |
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