首页> 外文期刊>Journal of Applied Polymer Science >Vapor treatment, liquid crystal formation, magnetic orientation, and crystallization (VLMC) to form helical polyisocyanides with oriented crystal-like structure
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Vapor treatment, liquid crystal formation, magnetic orientation, and crystallization (VLMC) to form helical polyisocyanides with oriented crystal-like structure

机译:蒸汽处理,液晶形成,磁取和结晶(VLMC)形成具有取向晶体状结构的螺旋聚异氰化物

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摘要

We describe a four-step process [solvent vapor treatment, liquid crystal formation, magnetic orientation, and crystallization (VLMC)] for producing oriented helical polyisocyanides with crystal-like structure. We synthesized a series of ortho-alkyl groups substituted with poly(phenyl isocyanide), and characterized the polymer structure using polarizing optical microscopy, scanning electron microscopy, and X-ray diffraction. The results demonstrated that the polymer has a crystal-like structure and the sample forms cholesteric liquid crystal phase. Vapor treatment of polymer films under a magnetic field produced an aligned fiber structure at the submicron level and demonstrated magnetic alignment and formation of a solvent vapor-induced polymer crystal. These results demonstrated formation of a polymer with a one-handed helical structure, formation of a liquid crystal and polymer crystal via solvent vapor treatment, and magnetic alignment of a textile-like polymer crystal domain.
机译:我们描述了一种四步过程[溶剂蒸汽处理,液晶形成,磁取和结晶(VLMC),用于制备具有晶状结构的取向螺旋多异氰酸酯。 我们合成了用聚(苯基异氰化物)取代的一系列烷基,并使用偏振光光学显微镜,扫描电子显微镜和X射线衍射进行聚合物结构。 结果表明,聚合物具有晶体状结构,样品形成胆甾型液晶相。 在磁场下的聚合物膜的蒸气处理在亚微米水平下产生了对准的纤维结构,并显示出磁对准和形成溶剂蒸气诱导的聚合物晶体。 这些结果表明,通过单手螺旋结构形成聚合物,通过溶剂蒸汽处理形成液晶和聚合物晶体,以及纺织状聚合物晶体结构域的磁对准。

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