|학술대회||2017년 가을 (10/25 ~ 10/27, 대전컨벤션센터)|
|권호||23권 2호, p.1447|
|제목||Controlling the Structural, Thermal, Tribological properties of Poly(vinylidene fluoride)/Nano-TiO2 Compoistes using Dry-mixing and Hot-Press Technique|
|초록||A series of poly(vinylidene fluoride) (PVDF)-based composite film with various nano-TiO2 loading values up to 40 wt% were successfully fabricated by a dry-mixing and uniaxial hot-press molding technique. Nano-TiO2 could make the crystal structure of the PVDF α-phase dominant, as characterized by Fourier transform infrared spectroscopy, X-ray diffraction, thermogravimetric analysis, and differential scanning calorimetry. The homogeneous distribution and interactions of the composites were investigated by scanning electron microscopy and energy-dispersive spectrometry.
As the amount of nano-TiO2 increased, the frictional performances was improved owing to the better contact adhesion contributed by the nonpolar α-phase crystal domain of the PVDF. In addition, the incorporation of the nano-TiO2 filler could reduce viscoelastic characteristic of composite film, and as a result, the friction coefficients decreased. Moreover, the taber abrasion resistances were comparable to that of commercial ultra-high-molecular-weight polyethylene (UHMWPE), indicating the availability of PVDF/nano-TiO2 composite film.
|저자||박병주, 정정표, 김나운, 김종학|
|키워드||고분자합성; 고분자물성; 기능성고분자|