Polystyrene /TiO2 nanotubes composite microspheres fabricated via Pickering emulsion polymerization stabilized by TiO2 nanotubes

doi:10.3969/j.issn.0438-1157.2014.04.050

CIESC Journal ›› 2014, Vol. 65 ›› Issue (4): 1526-1530.DOI: 10.3969/j.issn.0438-1157.2014.04.050

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Polystyrene /TiO₂ nanotubes composite microspheres fabricated via Pickering emulsion polymerization stabilized by TiO₂ nanotubes

ZHANG Fang, SHI Tiejun, ZHOU Xun, ZHOU Hai'ou, WU Jing

School of Chemical Engineering, Hefei University of Technology, Hefei 230009, Anhui, China

Received:2013-07-26 Revised:2013-10-29 Online:2013-11-27 Published:2014-04-05
Supported by:
supported by the National Natural Science Foundation of China (51273054).

二氧化钛纳米管稳定Pickering乳液制备PS/TiO₂纳米管复合微球

张方, 史铁钧, 周讯, 周海鸥, 吴竟

合肥工业大学化工学院, 安徽合肥 230009

通讯作者: 史铁钧
作者简介:张方（1988—），男，硕士研究生。
基金资助:
国家自然科学基金项目（51273054）。

Abstract

Abstract: TiO₂ nanotube prepared via the hydrothermal method was modified with KH-570 and then the modified TiO₂ nanotube was used as an emulsifier to fabricate PS/TiO₂ nanotube composite microspheres via Pickering emulsion polymerization. The TiO₂ nanotubes and composite microspheres were characterized by IR, optical microscope, HRTEM, FESEM and XPS. The surface wettability of TiO₂ was measured with contact angle meter. When the value of m_KH-570/m_TiO₂ was 0.15, the modified TiO₂ nanotube possessed the best surface wettability and it could satisfactorily stabilize the St-in-water Pickering emulsion polymerization. And then the composite microspheres with PS nucleus and dense, homogeneous TiO₂ nanotubes shells could be obtained via Pickering emulsion polymerization.

Key words: TiO₂ nanotubes, hydrothermal, Pickering emulsion, composite microsphere

摘要： 利用γ-甲基丙烯酰氧基丙基三甲氧基硅烷（KH-570），对水热法制备的TiO₂纳米管进行了表面改性，并用改性的纳米管为稳定剂，采用Pickering乳液聚合法制备了聚苯乙烯/TiO₂纳米管复合微球。采用红外光谱（IR）、光学显微镜、高分辨透射电镜（HRTEM）、高分辨扫描电子显微镜（FESEM）、X射线光电子能谱（XPS）等分析手段，对改性前后TiO₂纳米管以及复合微球的结构和形貌进行了表征，用三相接触角仪测试并优化了TiO₂纳米管的表面润湿性。研究结果表明，当m_KH-570/m_TiO₂=15%时，改性TiO₂纳米管表面润湿性最佳，能很好地稳定Pickering乳液聚合，聚合后可以得到壳层为致密均匀TiO₂纳米管，核为聚苯乙烯的复合微球。

关键词: TiO₂纳米管, 水热法, Pickering乳液, 复合微球

CLC Number:

O631

ZHANG Fang, SHI Tiejun, ZHOU Xun, ZHOU Hai'ou, WU Jing. Polystyrene /TiO₂ nanotubes composite microspheres fabricated via Pickering emulsion polymerization stabilized by TiO₂ nanotubes[J]. CIESC Journal, 2014, 65(4): 1526-1530.

张方, 史铁钧, 周讯, 周海鸥, 吴竟. 二氧化钛纳米管稳定Pickering乳液制备PS/TiO₂纳米管复合微球[J]. 化工学报, 2014, 65(4): 1526-1530.

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Polystyrene /TiO₂ nanotubes composite microspheres fabricated via Pickering emulsion polymerization stabilized by TiO₂ nanotubes

二氧化钛纳米管稳定Pickering乳液制备PS/TiO₂纳米管复合微球

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