| 초록 |
Elastomers have been used in research for the development of display devices or flexible composite materials that can be attached to the skin. However, the use of elastomer is limited due to high moisture permeability and positive Poisson's ratio. In this study, poly(dimethylsiloxane) (PDMS) as a polymer and cellulose nanocrystal (CNC) as a filler were used. CNC was prepared from Avicel using tetrabutylphosphonium hydroxide (TBPH), and a complex with PDMS was constructed using the directional freezing technique. The manufacturing of CNC was confirmed through laser-light-scattering observation and SEM. A change in the birefringence of composites was observed through the crossed polarization of the optical microscope for the detection of the alignment structure of the CNC. Transparency was secured through the combination of CNC and PDMS into composite films. Auxetic and barrier properties can be merged by structural engineering of CNC and the surface modification methods of PDMS. |
