Chinese Journal of Polymer Science ( IF 4.3 ) Pub Date : 2020-11-04 , DOI: 10.1007/s10118-021-2519-x Shuo-Feng Liang , Chen Nie , Jie Yan , Qi-Jin Zhang , Si Wu
Photoinduced reversible liquefaction and solidification of polymers enable processing and healing of polymers with light. Some azobenzene-containing polymers (azopolymers) exhibit two types of photoinduced liquefaction properties: photoinduced reversible solid-to-liquid transition and directional photofluidization. For the first type, light switches the glass transition temperature (Tg) values of azopolymers and induces reversible solid-to-liquid transitions. For the second type, polarized light guides solid azopolymers to flow along the polarization direction. Here, we compare the two types of photoliquefaction and discuss their mechanisms. Recent progresses and applications based on photoliquefaction of azopolymers are also highlighted.
中文翻译:
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含偶氮苯的聚合物的光诱导可逆固-液转变和定向光流化
聚合物的光诱导可逆液化和固化可以用光处理和修复聚合物。一些含偶氮苯的聚合物(偶氮聚合物)表现出两种类型的光致液化特性:光致可逆的固液转变和定向光流化。对于第一种类型,光会切换偶氮聚合物的玻璃化转变温度(T g)值,并引起可逆的固-液转变。对于第二类型,偏振光引导固体偶氮聚合物沿偏振方向流动。在这里,我们比较两种类型的光液化并讨论其机理。还强调了基于偶氮聚合物光液化的最新进展和应用。