期刊
APPLIED SURFACE SCIENCE
卷 329, 期 -, 页码 234-239出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2014.12.107
关键词
Thermosensitive hybrid silica nanoparticles; Optimizing conditions; POEGMA; AGET-ATRP
类别
资金
- National Science & Technology Pillar Program during the Twelfth Five-year Plan Period [2014BAE03B03]
- Natural Science Found of Shanxi Province [2014011014-1]
- China National Petroleum & Gas Corporation Science and Technology Development Project Nano intelligent chemical flooding agent [2011A-1001]
- Shanxi Province Graduate Outstanding Innovation Project [0113127]
Thermosensitive poly(ethylene glycol) methyl ether methacrylate (POEGMA) was grafted on SiO2 nanoparticles using activators generated by electron transfer atom transfer radical polymerization (AGET-ATRP) technique. The effects of the amount of ligand, catalyst, ascorbic acid and monomer, as well as the reaction temperature and time were systematically investigated and optimized to get a high grafting density. The structure of the hybrid materials was characterized by Fourier transform infrared (FTIR) spectroscopy, and the morphology was characterized by transmission electron microscopy (TEM) observations. Thermosensitive properties of SiO2-POEGMA particles were investigated at different grafting densities by turbidity measurements. (C) 2015 Elsevier B.V. All rights reserved.
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