双壳结构绿色电泳粒子的制备及其应用

Preparation of Double-shell Structure Green Electrophoretic Particles and Its Application in Electronic Ink

摘要:

采用反相微乳液-表面溶剂聚合法制备了双壳结构的绿色电泳粒子（PIB/CT/S）。该电泳粒子以二氧化硅球（S）为基体，以绿色钛酸钴（CoTiO3）为第一层包覆物，制备了绿色纳米粒子（CT/S），CT/S具有良好的球形结构，平均直径为191.2 nm,粒子密度2.5644 g/cm3。为进一步降低粒子密度，以离子液体聚合物--聚[1-乙烯基-3-十二烷基]咪唑溴（PIB）为第二层包覆物包覆CT/S，得到双壳结构的绿色电泳粒子（PIB/CT/S),密度为1.7905 g/cm3，在电泳液四氯乙烯（密度为1.623 g/cm3）中具有优异的疏水性和分散稳定性，制备的简易电泳显示器的响应时间为165 ms，明显优于目前报导的绿色电泳显示的响应时间。

Abstract:

Double-shell structure green electrophoretic particles (PIB/CT/S) were prepared through a sol-gel process in reverse microemulsion combined with surface solvent polymerization. The green nanoparticles (CT/S) were prepared by using silica spheres (S) as the matrix and CoTiO3 as the first coating. CT/S had a good spherical structure, with an average diameter of 191.2 nm and a particle density of 2.5644 g/cm3. In order to reduce the particle density, ionic liquid polymer poly [1-vinyl-3-dodecyl] imidazolium bromide (PIB) was used as the second coating to coat CT/S to obtain bivalve green electrophoretic particles (PIB/CT/S), 1.7905 g/cm3 and had excellent hydrophobicity and dispersion stability in the electrophoretic solution tetrachloroethylene (1. 623 g/cm3). The response time of the simple electrophoretic display was 165 ms which was significantly better than that of the green electrophoretic display reported at present.