| Ethylene glycol dimethacrylate(EGDMMA) was taken place of the unbending molecule in this paper. The EGDMMA is flexible with double polymericable functions. As the same as the usual double acrylate molecule with liquid crystal of a kind , the EGDMMA became polymer of long fibre network structure after the ultraviolet radiation polymerization. Polaride microscope and scanning electron microscope (SEM) were used to study the molecule texture and the polymer network structure. The paper had compared the difference between the polymer of the traditional polymer network liquid and the EGDMMA polymer and analyzed the polymerization mechanism.The PEGDMMA network prepared in the nematic liquid crystal is the same as the polymer network formed of the usual double acrylate molecule with liquid crystal of a kind. The traditional theory considered that the usual double acrylate molecule with liquid crystal of a kind had the same tropism as the liquid crystal because of the effect of the liquid crystal, then was anchored to form the long fibre network structure. The research found that the formed network relay on the monomer anisotropy diffusion during the polymerization but not the monomer tropism in the liquid crystal .It is innovative exploration to the polymerization mechanism. We have prepared the Guest-Host Polymer network LCD and mensurated electro-optic quality. In this paper the characteristics of the LC material were ameliorated by respectively adding dichromaticism dyeware, active reagent and chirality reagent. By adding definite chirality reagent the LCD reflection wavelength is changed and the voltage is increased. By adding a bit of active reagent such as Polyoxyethylene sorbitan monooleate ,Polyoxyethylene sorbitan trioleate,Glyceryl momostearate and so on,the LCD response velocity is remarkably improved . The LCD response velocity is increased about 200 times.The actual samples were prepared with chirality mixing liquid crystal and monomer in ultraviolet irradiation for 4 hours. |
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