Normally transparency polymer dispersed liquid crystal mode using the synthesis of Waterborne Polyurethanes
발표자
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초록
내용
Waterborne polyurethanes (WPUs) with LC were successfully prepared using polycaprolactone diol and 4,4'-Methylene dicyclohexyl diisocyanate as soft segment of prepolymer, dimethylolbutanoic acid as emulsifier, and trimethylamine as neutralizer, ethylenediamine as chain extender based on different molecular weight of pre-polymer. Synthesized WPU prepolymer and liquid crystals were stirred under the constant rate. And de-ionized water containing bishexamethylenetriamine was added in the reaction mixture to form the polyurea. In this study, it is the control of confirmed microcapsule size by adjusting the molecular weight of the prepolymer. The molecular weights and the functional groups of the WPUs are evaluated through the GPC and FT-IR. Microcapsule LC complexed WPUs could be applied to the various industry fields of next-generation display, such as 3D printer material, smart window and flexible display.