Preparation and characteristics of functional microcapsules consisting of liquid crystalline polymer as a skelton material

由液晶聚合物作为微胶囊材料组成的微胶囊的制备和它们的释放特性的测量如下进行：1.热响应性液晶单体（BHE）的合成按照本实验室开发的方法合成了液晶单体1- [6-（4-联苯氧基）己氧羰基] -乙烯。该单体在常温下为固体.悬浮聚合法制备微球及偏振光透射率随温度的变化通过在搅拌釜中于80 ℃进行悬浮聚合，获得了约200 μ m的聚合物微球。通过偏光板测量微球（熔融）的透光率，发现微球从液晶态到各向同性态的相变.具有受控平均分子量的液晶聚合物的制备 ...更多信息 溶液聚合在苯中，在规定的单体浓度和引发剂（AIBN）浓度下，通过溶液聚合制备了平均分子量为1000 ~ 22000的七种液晶高分子材料.液晶微胶囊的释放特性以聚苯乙烯（PS）和聚-BHE共聚物（BHE）为囊材，制备了几种微胶囊，测定了它们在不同温度（30 ~ 70 ℃）下的释放特性。因此，两个不连续的渗透系数对温度的依赖关系被发现，这些被建议对应于相变（从固体到液晶和从液晶到各向同性）。利用液晶聚合物膜对Na+的渗透行为进行了初步研究，证实了我们提出的液晶聚合物微胶囊的释放机理。少

Preparations of microcapsules consisting of liquid crystalline polymer as a skelton material and measurements of their release characteristics were carried out as follows ;1. Synthesis of thermal responsible liquid crystalline monomer (BHE)According to the prescribed method developed by our laboratory a liquid crystalline monomer 1- [6- (4-biphenylyloxy) hexyloxycarbonyl] -ethylene was synthesized. The monomer is solid at ordinary temperature.2. Preparation of microspheres with suspension polymerization and measurement of polarized light transmittance response with temperature.About 200 mum polymer microspheres were obtained by carrying out the suspension polymerization at 80ﾟC in a stirred tank reator. Phase change from liquids crystalline state to isotropic state was recognized by measuring the light transmittance of microspheres (fused) through a polarizing plate with increasing temperature.3. Preparations of liquid crystalline polymer having controlled average molecular weight with … More solution polymerizationSeven kinds of liquid crystalline polymer materials ranging from 1000 to 22000 of average molecular weight were prepared by the solution polymerization in benzene at prescribed monomer concentrations and prescribed initiator (AIBN) concentrations.4. Release characteristics of liquid crystalline microcapsulesSeveral kinds of microcapsules consisting of polystirene and poly-BHE copolymer as skelton material were prepared and their release characteristics were measured t various temperature (is the range of 30 to 70ﾟC). Consequently, two discontinuous dependencies of the permeation coefficients on temperature were found and these were suggested to correspond to the phase changes (from solid to liquid crystalline and from liquid crystalline to isotropic). Furthermore, it is found that the controlling the temperature dependency of liquid crystalline polymer microcapsules is possible.A fundamental permeation study of Na+ transportion through the membrane was carried out using a liquid crystalline polymer membrane, and our proposed release mechanism of the liquid crystalline polymer microcapsules was confirmed. Less