In the case of the unsaturated alcohols , such as hydroxyethyl acrylate ( hea ) , the paes showed the photo - alignment property to the nematic liquid crystals with the pretilt angle of 0 . 60 ? secondly , three kinds of fluoro - containing diamine monomers were prepared via the reduction reactions of the corresponding dinitro compounds , which were synthesized via the nitro nucleophilic displacement reactions of 3 , 5 - dinitro - 5 - trifluoromethyl benzene with diphenol compounds 此外,本论文还设计并通过3 , 5 -二硝基三氟甲苯与二酚化合物的硝基亲核取代反应制备了二硝基化合物,将其还原最终合成了三种间位取代的含氟二胺单体tfpda 、 tfbpda与tfmda ,并对其聚合行为进行了研究。
In this paper , the kaolinite / polyacrylamide intercalation compound was prepared first by the displacement reaction of kaolinite / formamide intercalation precursor with acrylamide , and then the in - situ polymerization of acrylamide . the kaolinite structure and the intercalation mechanism were discussed by the techniques of powder x - ray diffraction analysis , * h mas nmr , raman , and ir spectra 本文以甲酰胺为前驱剂、丙烯酰胺为取代剂,采用插层-取代-原位聚合的方法制备高岭石有机插层复合物,用x射线衍射、 ~ 1hmasnmr 、 raman 、 ir等技术研究了插层复合物结构特征和插层反应机理。