Synthesis and Polymerization of Liquid Crystals Containing Vinyl and Mercapto Groups
作者:Johan Lub、Dirk Jan Broer、Nel van den Broek
DOI:10.1002/jlac.199719971116
日期:1997.11
Liquid-crystalline monomers containing two vinyl groups, two mercapto groups, or a 1:1 combination of the two have been synthesized and characterized in terms of their mesomorphic properties. These monomers can be photopolymerized in situ in an appropriate ratio of vinyl and mercapto groups to form highly ordered liquid-crystalline main-chain polymers. During polymerization in the nematic phase the appearance
已经合成了含有两个乙烯基,两个巯基或两者的1:1组合的液晶单体,并根据其介晶性质对其进行了表征。这些单体可以适当比例的乙烯基和巯基基团进行原位光聚合,以形成高度有序的液晶主链聚合物。在向列相聚合期间,外观从高取向双折射状态下的透明变为不透明。该效应可能是由于散射,该散射是由于聚合收缩和/或相分离的结果而对宏观取向的干扰所引起的。在某些情况下,反应混合物从向列态转变为结晶态,这导致转化度的降低以及微晶态的改变。