Thermoresponsive Shape-Memory Aerogels from Thiol-Ene Networks

被引：36
|
作者：
Michal, Brian T. [1 ]
Brenn, William A. [1 ]
Nguyen, Baochau N. [3 ]
McCorkle, Linda S. [3 ]
Meador, Mary Ann B. [2 ]
Rowan, Stuart J. [1 ]
机构：
[1] Case Western Reserve Univ, Dept Macromol Sci & Engn, 2100 Adelbert Rd, Cleveland, OH 44106 USA
[2] NASA, Glenn Res Ctr, 21000 Brookpark Rd, Cleveland, OH 44135 USA
[3] Ohio Aerosp Inst, 22800 Cedar Point Rd, Cleveland, OH 44142 USA
来源：
CHEMISTRY OF MATERIALS | 2016年 / 28卷 / 07期
基金：
美国国家航空航天局;
关键词：
POLYIMIDE AEROGELS; MECHANICALLY STRONG; POLYMER; POLYMERIZATIONS; SCAFFOLD; FOAM;
D O I：
10.1021/acs.chemmater.6b00474
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Thermoresponsive shape-memory polymer aerogels have been produced from thiol-ene networks of 1,6-hexanedithiol, pentaerythritol tetrakis(3-mercaptopropionate), and triallyl-1,3,5-triazine-2,4,6-trione. The thiol-ene networks form organogels with either acetonitrile or acetone as the solvent, which can be subsequently removed using supercritical CO2 extraction. The resulting aerogels have nearly quantitative shape fixing and shape recovery with a glass transition temperature ranging from 42 to 64 degrees C, which serves as the thermal transition trigger for the shape-memory effect. The aerogels have a porosity of 72% to 81% but surface areas of only 5-10 m(2)/g.
引用
收藏
页码：2341 / 2347
页数：7
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