Photoinduced bending behavior of crosslinked liquid-crystalline polymer films with a long spacer
Photoinduced bending behavior of crosslinked liquid-crystalline polymer films with a long spacer
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长间隔交联液晶聚合物薄膜的光诱导弯曲行为
DOI：
10.1039/c0jm00510j
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发表时间：
2010-08
期刊：
影响因子：
--
通讯作者：
Yu, Yanlei
中科院分区：
文献类型：
--
作者：
Cheng, Futao;Xu, Jixiang;Yen, Chu-Chun;Yin, Ruoyuan;Zhang, Yuanyuan;Yu, Yanlei
合成了含有十一烯间隔基的丙烯酸酯单体和二丙烯酸酯交联剂，并通过单体和交联剂的混合物的光聚合制备了不同交联密度的交联液晶聚合物薄膜。由于间隔物相对较长，在低交联密度的薄膜中观察到明显的弯曲行为：当温度低于90℃时，薄膜首先远离光源弯曲，然后在紫外光照射下向光源弯曲。当温度升至 90°C 以上时，薄膜直接向光源弯曲。 X 射线衍射用于探测不同温度下薄膜的相结构，并提出了一个合理的机制来解释这种独特的现象。此外，当交联密度增加时，所有薄膜都以更快的速度直接向光源弯曲，这与其模量和有序参数有关。
An acrylate monomer and diacrylate crosslinker containing a spacer of undecylene were synthesized and crosslinked liquid-crystalline polymer films with different crosslinking densities were prepared by photopolymerization of mixtures of the monomer and the crosslinker. Due to the relatively long spacer, distinct bending behavior was observed in the film with a low crosslinking density: when the temperature was lower than 90 °C, the film first bent away from the light source and then towards it upon the irradiation of UV light. As the temperature was raised above 90 °C, the film bent directly towards the light source. X-ray diffraction was used to probe the phase structures of the film at different temperatures and a plausible mechanism was presented to explain the distinct phenomenon. In addition, when the crosslinking density was increased, all the films bent directly towards the light source with faster speed, which is related to their modulus and order parameters.
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影响因子：
5.5
作者：
S. Kurihara;and Akihisa Sakamoto;T. Nonaka
通讯作者：
S. Kurihara;and Akihisa Sakamoto;T. Nonaka
影响因子：
8.6
作者：
C. Sánchez;B. Villacampa;R. Alcalá;C. Martínez;L. Oriol;M. Piñol;J. Serrano
通讯作者：
C. Sánchez;B. Villacampa;R. Alcalá;C. Martínez;L. Oriol;M. Piñol;J. Serrano
影响因子：
16.6
作者：
Kondo, M;Yu, YL;Ikeda, T
通讯作者：
Ikeda, T
DOI：
10.1007/978-3-540-69450-2
发表时间：
2008
期刊：
--
影响因子：
--
作者：
S. Marder;K. Lee
通讯作者：
S. Marder;K. Lee
影响因子：
5.5
作者：
Bao-Quan Chen;and Atsushi Kameyama;T. Nishikubo
通讯作者：
Bao-Quan Chen;and Atsushi Kameyama;T. Nishikubo