A New Series of Two-Ring-Based Side Chain Liquid Crystalline Polymers: Synthesis and Mesophase Characterization
作者:Goddeti Siva Mohan Reddy、Tanneru Narasimhaswamy、Jarugala Jayaramudu、Emmanuel Rotimi Sadiku、Konduru Mohana Raju、Suprakas Sinha Ray
DOI:10.1071/ch13090
日期:——
A new series of side chain liquid crystalline polymers containing a core, a butamethylenoxy spacer, ester groups, and terminal alkoxy groups were synthesised and their structures were confirmed. The core was constructed with two phenyl rings and an ester linking unit. All the polymers were characterised by hot-stage polarising optical microscopy, differential scanning calorimetry, variable temperature
合成了一系列新的侧链液晶聚合物,这些聚合物包含一个核,一个丁烯氧基间隔基,一个酯基和一个末端烷氧基,并确定了它们的结构。核心由两个苯环和一个酯连接单元组成。所有聚合物均通过热台偏振光学显微镜,差示扫描量热法,可变温度X射线衍射,热重分析和凝胶渗透色谱法进行表征。发现该聚合物是液晶的。向列和近晶A(S A观察到具有短末端链(C2和C6)的同系物的相,而具有较长链(C8至C12)的同系物表现出近晶C相。发现该聚合物的热稳定性在293至326℃的范围内,并且发现该聚合物的分子量在6×10 3至1.3×10 4之间变化。