Oriented polymer networks obtained by photopolymerization of liquid-crystalline monomers
Oriented polymer networks obtained by photopolymerization of liquid-crystalline monomers
复制标题
通过液晶单体光聚合获得的定向聚合物网络
DOI：
10.1002/apmc.1990.051830103
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发表时间：
1990
期刊：
影响因子：
--
通讯作者：
R. Hikmet
中科院分区：
文献类型：
--
作者：
D. Broer;R. G. Gossink;R. Hikmet
二丙烯酸酯CH 2 = CH CO 2（CH 2）n O Ph CO 2 Ph（R）O 2 C Ph O（CH 2）4 O 2 C CH CH CH 2（n=4-10，R=H，CH 3）的光聚合得到高度有序的聚合物网络，其有序度与聚合温度有关。这种有序性在很宽的温度范围内保持。单轴有序聚合物网络在其热膨胀系数和模量方面也表现出各向异性。通过在聚合前向双丙烯酸酯中加入手性物质，获得具有螺旋结构的有序聚合物网络
Photopolymerization of the diacrylates CH 2 =CH-CO 2 -(CH 2 ) n -O-Ph-CO 2 -Ph(R)-O 2 C-Ph-O-(CH 2 ) 4 -O 2 C-CH-CH 2 (n=4-10, R=H, CH 3 ) gives polymer networks with a high degree of ordering which is dependent on the polymerization temperature. This ordering is maintained over a wide temperature region. Uniaxiolly ordered polymer networks show anisotropy also in their thermal expansion coefficient and modulus. Ordered polymer networks with a helicoidal structure are obtained by addition of a chiral material to the nematic diacrylate before polymerisation