摘要
文中设计与合成了国内未见报道的单体M1、M2和系列手性液晶聚合物。通过差示扫描量热（DSC）、偏光显微分析（POM）、广角X射线衍射、旋光仪等测试手段研究了单体M1和手性液晶聚合物液晶性能。结果表明,M1为向列型液晶单体,M2为手性非液晶单体。聚合物P2-P4呈现近晶A相,P5,P6为胆甾相,P7的液晶性能已不明显,聚合物P8已没有液晶性能。具有宽的液晶相范围,液晶相范围均高于140℃。随着手性单体M2含量（0%-50%）的增加,聚合物的玻璃化转变温度、清亮点温度、液晶相范围均呈现降低趋势。
Monomers： nematic monomer M1 and chiral monomer M2 were synthesized and a series of polymers were prepared by graft polymerization of M1 and M2 using polymethylhydrosiloxane as backbone.The mesomorphic properties were investigated by differential scanning calorimetry（DSC）,polarizing optical microscopy（POM） and X-ray diffraction measurements（XRD）.Polymer P2～P4 show chiral smectic phase,P5,P6 shows cholesteric phase,P7 exhibits bad properties,P8 doesn′t have a liquid crystal phase.The range of the mesogenic phase is more than 140 ℃.As the concentration of chiral agent M2（0～50%）increasing,the glass transition temperatures,clearing points and the range of temperature of the polymer decrease.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2011年第9期25-27,32,共4页
Polymer Materials Science & Engineering
基金
东北大学基本科研业务费(N090405005)
关键词
手性
近晶相
玻璃化温度
聚合物
合成
chirality
smectic phase
glass temperature
polymer
synthesis
