摘要
光致变形型高分子材料以光为激发源,在没有机械接触的情况下,能够快速改变尺寸和形状。本文介绍了光致变形的高分子凝胶、无定形高分子、液晶弹性体和光致形状记忆高分子材料,并对各种材料的光致变形机理进行解释。无定形高分子的光致变形较小,目前研究重点是具有各向异性的液晶弹性体。文中着重介绍了具有偶氮苯介晶基元的液晶弹性体的光致变形研究,在光照下这类材料只要有1%的偶氮苯介晶基元发生顺反异构,就会发生光致变形。
Photodeformable polymer materials can quickly change their shape and size in response to irradiation without any mechanical contact. In this review, we focus on photodeformable polymer gels, amorphous polymers, liquid-crystalline elastomers （LCEs） and photoinduced shapememory polymers. The mechanism of photodeformation was explained. LCEs with anisotropic physical properties produce more mechanical power than amorphous polymers, especially the polymers which contain azobenzene derivatives. In LCEs, photodeformation will happen for the photoisomerization of only 1% mesogens.
出处
《高分子通报》
CAS
CSCD
2008年第6期13-18,共6页
Polymer Bulletin
基金
国家自然科学基金(20444001)
关键词
光致变形
偶氮苯
液晶弹性体
感光高分子
Photodeformable
Azobezene
liquid-crysatlline elastomer
Photosentive polymer
