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Fourier Transform IR에 의한 혼방섬유의 정성 및 정량분석(II) -면 혼방품의 정량분석에의 FTIR 적용-
김갑진,윤병숙 한국섬유공학회 1986 한국섬유공학회지 Vol.23 No.3
The IR spectra of cotton, PET, nylon 6, viscose rayon, polypropylene, acrylic, acetate rayon, and cotton/A fiber blend were obtained by using a FTIR spectrometric method. These all except cotton/A fiber blend spectra were weight-nomalized to a sample weight of 2mg with the scaling function in the arithmetic command. The IR spectrum of cotton/A fiber blend was digitally subtracted with the normalized A fiber spectrum until A fiber component was removed completely i.e. the difference spectrum resembled the spectrum of cotton. When this subtracting operation was carried out, the scale factor(FCR)A, which meant the content of A fiber in cotton/A fiber blend, was also determined. After that, the difference spectrum was digitally subtracted with the normalized cotton spectrum until cotton copmponent was removed completely i.e. one could obtain the zero spectrum having the flat base line throughout all wavenumbers. When the second subtracting procedure was carried out, the scale factor(FCR)C, which meant the content of cotton in cotton/A fiber blend, was determinded. The contents of cotton and A fiber were calculated from these two scale factors. These fiber contents by FTIR were very close to the real fiber contents.
PVDF/Poly(vinyl acetate) 블렌드의 혼화성, 결정화거동 및 결정구조(I) -혼화성-
김갑진,노영숙,Kim, Gap-Jin,No, Yeong-Suk 한국섬유공학회 1997 한국섬유공학회지 Vol.34 No.5
The miscibility of poly(vinylidene (fluoride) (PVDF) and poly(vinyl acetate) (PVAc) blends has been studied using FT-lR spectroscopy and DSC. The factor analysis and digital subtraction of the IR spectra of the blends indicate the presence of specific interactions between PVDF and PVAc. The calculated values of interaction energy density, B (-1.369 cal/cm$^3$) and interaction parameter $X_{12}$ (-0.118 at 16$0^{\circ}C$) from the melting point depression equation also suggest that there is a sort of interaction between PVDF and PVAc in the melt state.