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介绍了一类端基含羧基结构的液晶性表面活性剂CDDA通过静电相互作用与磷钼酸(HPMo)进行复合,得到表面包覆柔性烷基链和羧基端基的复合物SEP-PMo,并通过元素分析、热失重等方法确认其化学结构.该复合物表现出稳定的液晶相,DSC,PLM,SAXS和TEM等研究表明其为层状相结构.进一步将SEP-PMo复合物与P4VP混合,通过羧基与吡啶环上氮的氢键相互作用,得到稳定的PMo和聚合物的复合物,同时对比研究了HPMo与P4VP直接共混后的静电复合物结构,表明经表面活性剂修饰后的PMo可在聚合物中保持其聚集态结构.
A kind of liquid crystal surfactant CDDA with terminal carboxyl groups was introduced to complex with phosphomolybdic acid (HPMo) by electrostatic interaction to obtain SEP-PMo complexed with flexible alkyl chains and carboxyl end groups The chemical structure was confirmed by elemental analysis, thermogravimetric analysis, etc. The complex showed a stable liquid crystal phase, and studies of DSC, PLM, SAXS and TEM showed that it was a lamellar phase structure. Further, the SEP-PMo complex was mixed with P4VP , The stable PMo and polymer complexes were obtained through the hydrogen bond interaction between the carboxyl groups and the nitrogen on the pyridine ring. The structures of the composites were also studied by direct comparison between HPMo and P4VP. PMo maintains its aggregated structure in the polymer.