%0 Journal Article
%T Preparation of Core-Shell Polystyrene/ Silica Composite Microspheres and Hollow Silica Spheres<br>核-壳式聚苯乙烯/二氧化硅复合微球及空腔硅球的制备
%A YANG Xiao-Ling
%A ZHU Yi-Hua
%A ZHU Meng-Qin
%A LI Chun-Zhong
%A <br>杨晓玲
%A 朱以华
%A 朱孟钦
%A 李春忠
%J 无机材料学报
%D 2003
%I Science Press
%X The core-shell polystyrene/silica composite microspheres with tailored dimensions and compositions were prepared by layer-by-layer self-assembling. The polymer cores were removed by calcination and hollow silica spheres with tailored wall thickness were produced. TEM photographs showed that silica nanoparticles formed a uniform shell round the core, which turned into a clear-cut hollow sphere after calcination. TG revealed that silica content within the composite microspheres increased with the assembled nano silica diameter. Both the successful assembly of Si02 and the complete removal of PS can be verified by FIIR comparison of PS, Si02, composite microspheres and the powders after heating treatment. With the same number layers of nanoparticles adsorpted on the latex cores, the larger the selected Si02 nanoparticles diameter (10nm, 20nm, 40nm), the larger the composite microspheres diameter, and the thicker the hollow spheres' wall.
%K self-assembly
%K PS/SiO2 composite microspheres
%K hollow silica spheres<br>自组装
%K 聚苯乙烯／二氧化硅复合微球
%K 空腔硅球
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=84529CA2B2E519AC&jid=ABC0063016AF57E1C73EF43C8D2212BD&aid=0F05866547CB5129&yid=D43C4A19B2EE3C0A&vid=13553B2D12F347E8&iid=B31275AF3241DB2D&sid=B593C98A8D813A42&eid=61548B9F608D3CE3&journal_id=1000-324X&journal_name=无机材料学报&referenced_num=0&reference_num=9