文献类型：期刊文献

英文题名：Binary Solvent Colloids of Thermosensitive Poly(N-isopropylacrylamide) Microgel for Smart Windows

作者：Wang, Mi[1,2];Gao, Yanfeng[2,3];Cao, Chuanxiang[2];Chen, Kaimin[4];Wen, Yicun[1];Fang, Dingye[1];Li, Li[1];Guo, Xuhong[1,5]

机构：[1]E China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]Shanghai Inst Ceram, Shanghai 200050, Peoples R China;[3]Shanghai Univ, Sch Mat Sci & Engn, Shanghai 200144, Peoples R China;[4]Shanghai Univ Engn Sci, Coll Chem & Chem Engn, Shanghai 201620, Peoples R China;[5]Shihezi Univ, Key Lab Mat Oriented Chem Engn Xinjiang Uygur Aut, Xinjiang 832000, Peoples R China

年份：2014

卷号：53

期号：48

起止页码：18462

外文期刊名：INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH

收录：;EI(收录号：20145000312536);WOS:【SCI-EXPANDED(收录号:WOS:000345884200011)】；

基金：We gratefully acknowledge the National Natural Science Foundation of China (51273063, 51003030, 21476143, and 11076002/A06), the Fundamental Research Funds for the Central Universities, the Higher School Specialized Research Fund for the Doctoral Program (20110074110003), and 111 Project Grant (B08021) for support of this work.

语种：英文

外文关键词：Amides - Differential scanning calorimetry - Hydrogels - Solvents - Modulation - Glycerol - Infrared devices - Energy conservation - Gels - Acrylic monomers - Optical properties

摘要：Thermosensitive poly(N-isopropylacrylamide) (PNIPAAm) microgel colloids were prepared by using water and high-boiling alcohol as binary solvent. Their thermosensitive behavior and solar modulation ability were studied by differential scanning calorimetery, ultraviolet-visible-near-infrared spectrophotometery, dynamic light scattering, and rheology. Effects of alcohol content and cross-linker dose on their microstructures and optical properties were investigated. A model house was constructed to test their energy-saving performance in smart windows. It was found that the solar modulation ability of PNIPAAm microgel colloids decreased with increasing N,N'-methylenebis(acrylamide) (BIS) dose or alcohol content. Compared to glycol, glycerol showed better compatibility with PNIPAAm hydrogels, inducing less deterioration of the solar modulation ability. With 0.1 wt % (of NIPA) BIS, when glycerol was added as a cosolvent, the prepared PNIPAAm microgel colloids exhibited spherical morphology, controllable LCST, short response time, suitable viscosity, low freezing point, restrained evaporation rate, and excellent energy-saving performance, which makes them much better candidates for application in smart windows than those using a single solvent. ? 2014 American Chemical Society.