文献类型：期刊文献

英文题名：Preparation of Hollow Silica Microspheres via Poly(N-isopropylacrylamide)

作者：Wang, Mo-zhen[1];Chen, Yu-chen[1];Ge, Xue-ping[2];Ge, Xue-wu[1]

机构：[1]Univ Sci & Technol China, CAS Key Lab Soft Matter Chem, Dept Polymer Sci & Engn, Hefei 230026, Peoples R China;[2]E China Univ Sci & Technol, Inst Nucl Technol & Applicat, Sch Sci, Shanghai 200237, Peoples R China

年份：2012

卷号：25

期号：1

起止页码：120

外文期刊名：CHINESE JOURNAL OF CHEMICAL PHYSICS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000304380900018)】；

基金：This work was supported by the National Natural Science Foundation of China (No.51073146, No.50773073, No.51103143, No.51173175, and No.50573070) and the Fundamental Research Funds for the Central Universities (No.WK2060200005).

语种：英文

外文关键词：SiO2 hollow microsphere; Poly(N-isopropylacrylamide); Tertraethyl orthosilicate; Soft template

摘要：Core-shell structured SiO2/poly(N-isopropylacrylamide) (SiO2/PNIPAM) microspheres were successfully fabricated through hydrolysis and condensation reaction of tertraethyl orthosilicate (TEOS) on the surface of PNIPAM template at 50 degrees C. The PNIPAM template can be easily removed by water at room temperature so that SiO2 hollow microspheres were finally obtained. The transmission electron microscope and scanning electron microscope observations indicated that SiO2 hollow microspheres with an average diameter of 150 nrn can be formed only if there are enough concentration of PNIPAM and TEOS, and the hydrolysis time of TEOS. FTIR, analysis showed that part of PNIPAM remained on the wall of SiO2 because of the strong interaction between PNIPAM and silica. This work provides a clean and efficient way to prepare hollow microspheres.