Thermoresponsive, Freezing-Resistant Smart Windows with Adjustable Transition Temperature Made from Hydroxypropyl Cellulose and Glycerol

被引：56

作者：

Nakamura, Chiaki ^{[1
]}

Yamamoto, Takashi ^{[1
]}

Manabe, Kengo ^{[1
]}

Nakamura, Takuto ^{[1
]}

Einaga, Yasuaki ^{[1
]}

Shiratori, Seimei ^{[1
]}

机构：

[1] Keio Univ, Sch Integrated Design Engn, Ctr Mat Design Sci, Grad Sch Sci & Technol,Kohoku Ku, 3-14-1 Hiyoshi, Yokohama, Kanagawa 2238522, Japan

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 2019年 / 58卷 / 16期

关键词：

SOLAR MODULATION; TRANSPARENCY; TRANSMISSION;

D O I：

10.1021/acs.iecr.9b00407

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A thermoresponsive smart window that can switch its transmittance to control heating from sunlight is attracting great attention. Such windows made from a hydrogel of a thermoresponsive polymer such as poly(N-isopropylacrylamide) (PNIPAm) or hydroxypropyl cellulose (HPC) have been successful and can switch their transmittance at room temperature. However, such hydrogels occasionally freeze in cold places, degrading their transmittance. Thus, a thermoresponsive hydrogel that can be used in various geographical regions is desired. Here, we produced a thermoresponsive smart window with freezing resistance made from HPC and glycerol. We could adjust its switching temperature by simply changing the amount of added glycerol, letting us easily change it to room temperature for practical use. These smart windows show high cyclic performance, freezing resistance, and heat shielding, demonstrating great potential.

引用

页码：6424 / 6428

页数：5