具有高稳定性的PS/TiO2/UF多层核壳杂化微球的制备

Preparation of PS/TiO2/UF multilayer core-shell hybrid microspheres with high stability.

作者信息

Peng Bo, Tang Fangqiong, Chen Dong, Ren Xiangling, Meng Xianwei, Ren Jun

机构信息

Laboratory of Controllable Preparation and Application of Nanomaterials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.

出版信息

J Colloid Interface Sci. 2009 Jan 1;329(1):62-6. doi: 10.1016/j.jcis.2008.09.069. Epub 2008 Sep 30.

DOI:10.1016/j.jcis.2008.09.069

PMID:18945439

Abstract

In this paper, we report a facile method for preparation of polystyrene/titania/urea-formaldehyde resin (PS/TiO(2)/UF) multilayer core-shell hybrid microspheres with high stability through in situ condensation polymerization. The TEM images show that the thickness of UF shells is about 10 nm. The Zeta potential is close to zero. The density of PS/TiO(2)/UF could be controlled to 1.85 g/cm(3), which matches well with the non-polar dispersant (tetrachloroethylene). They are well dispersed and remain non-agglomerated even over several months, so they could be potential building blocks to fabricate electrophoretic display. Some parameters such as the ratio of urea-formaldehyde prepolymer (UFP) to PS/TiO(2), the pH value, and the temperature are also investigated.

摘要

在本文中，我们报道了一种通过原位缩聚制备具有高稳定性的聚苯乙烯/二氧化钛/脲醛树脂（PS/TiO₂/UF）多层核壳杂化微球的简便方法。透射电子显微镜（TEM）图像显示，脲醛壳的厚度约为10纳米。zeta电位接近零。PS/TiO₂/UF的密度可控制为1.85克/立方厘米，与非极性分散剂（四氯乙烯）匹配良好。它们分散良好，即使经过几个月也不会团聚，因此可能是制造电泳显示器的潜在构建块。还研究了一些参数，如脲醛预聚物（UFP）与PS/TiO₂的比例、pH值和温度。