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박연홈,박학수,남성우,박종래 한국섬유공학회 1992 한국섬유공학회지 Vol.29 No.12
Various electrical properties such as electrical conductivity, electrostatic charge and its half-life time, and electromagnetic shielding effetiveness were studied for antistatic polyester film and fabric prepared by exposing modified poly(ethylene terephtalate) (M-PET) containing ferric chloride as an oxidant to pyrrole vapor. Higher content of FeCl3 led to higher eletrical conductivity, however shorter time to the saturation conductivity. It was found that just above the critical polypyrrole(PPy) content, 1.5wt %, electrical conductivity increased rapidly to the saturation value, 1O-$^3$ S/cm. Morphological feature of the antistatic film, i.e. homogeneous and dense distribution of PPy on the film surface, was found to be another preferential factor improving the electrical conductivity. The initial electrical conductivity of antistatic film was retained even after 30 days at room temperature under atmospheric environment. As compared with the M-PET fabric itself, the antistatic fabric was found to have lower maximum electrostatic charge by about three orders and shorter half-life time by about two orders. Also the antistatic fabirc exhibited good electromagnetic shielding effectiveness which read 24 dE at 300 MHz.
박연홈,박학수,남성우,박종래 한국섬유공학회 1992 한국섬유공학회지 Vol.29 No.7
Modified polyethylene terephtalate(M-PET) was obtained by copolymerizing dimethyl terephthalate(DMT), ethylene glycol, and dimethyl 5-sulfoisophthalate(DMS) and antistatic polyester material has been prepared by exposing M-PET containg ferric chloride to pyrrote vapor. The DMS component in M-PET was confirmed by the analysis of IR and NMR spectra. The formation of polypyrrole(PPy) in M-PET matrix was also confirmed by the analysis of IR spectrum. The changes of physical structure due to the insertion of ferric chloride and formation of PPy in M-PET have been investigated by analysing wide-angle X-ray diffraction curves. The surface of the antistatic polyester film showed the continuous phase of granular PPy, which was formed through the film thickness. The physical properties of antistatic polyester was satisfiable, that was, the tensile strength and the elongation at break retained 80 and 90% of those of M-PET matrix, respectively. But the modulus retained about 60% of M-PET matrix.
전도선 Poly(vinyl Chloride)/Poly(aniline) 복합체의 제조 및 전기적 성질
이민구,한명희,김병일,박연홈 한국섬유공학회 1992 한국섬유공학회지 Vol.29 No.12
Electrically conducting poly(vinyl chloride)Ipoly(aniline) (PVC/PANi) composite films were prepared by exposing PVC films containing ferric chloride to aniline vapor under various polymerization conditions. Their electrical and physical properties and morphologies were stu-died. Hydrochloric acid was used for the preparation of protonated PVC/PANi composite films. The electrical conductivity of PVC/PANi composite films lie in the range of 1O- 7~1O- $^2$ S/cm, depending on the preparation conditions such as the concentration of ferric chloride and hydro-chloric acid, and polymerization temperature. The formation of PANi in PVC matrix was confirmed by FT-IR spectroscopy and scanning electron microscopy.