We present that high birefringent nematic liquid crystal, 4–n–pentyl–4’–cyanobiphenyl, was incorporated into the polyacrylonitrile precursor which has a strong polar cyano group so as to produce electrospun nano-fibers, as the first time. Optical textures of nano-fibers were taken by polarized optical microscopy with different angles to determine the orientation degree of liquid crystal molecules in the center of the fiber. The molecules of liquid crystal self-ordered within the core of the fiber. Variation in morphology of liquid crystal/polymer nano-fibers were examined by utilizing both scanning electron microscopy and polarized optical microscopy depending on liquid crystal concentration in precursor and application voltage during electrospinning. Morphology of nano-fibers was significantly affected by electrospinning parameters and liquid crystal/polymer ratio. To understand phase separation and thermal stability of nano-fibers, calorimetric and thermogravimetric analyses were performed.

我们提出了高双折射向列液晶4–n–戊基–4'–氰基联苯首次将具有高极性氰基的聚丙烯腈前体掺入到聚丙烯腈中，从而生产出电纺纳米纤维。通过偏振光学显微镜以不同角度获取纳米纤维的光学织构，以确定液晶分子在纤维中心的取向度。液晶分子在纤维芯内自定序。根据前驱体中的液晶浓度和静电纺丝过程中的施加电压，通过使用扫描电子显微镜和偏振光学显微镜来检查液晶/聚合物纳米纤维的形态变化。纳米纤维的形貌受到电纺丝参数和液晶/聚合物比率的显着影响。