偏光全反射赤外吸収スペクトル法による繊維へ吸着した油性物質の研究

概要

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Polarized attenuated total reflection FT-IR spectra of fibers (silk, nylon 6,6,cotton and polyester) adsorbed by oily substances (oleic acid and triolein) were measured. In these spectra a new band appeared near 1700cm^<-1> which is lower 5〜7cm^<-1> than the band assigned to the C=O stretching vibration mode of oily substances, for the cases of silk, nylon and cotton. This band may be due to oily substances adsorbed on fibers. As silk and nylon were adsorbed by oily substances, the relative intensity of the amide II band, which is assigned to the deformation vibration mode of NH oriented perpendicularly to the fiber axis, decreased and the line shape of this band became broad toward the high wavenumber. On the other hand, the relative intensity of the amide II band due to NH oriented at random increased and the peak of this band shifted to the lower wavenumber. These facts show that C=O of oily substances adsorbs on NH of silk and nylon. On these spectral evidences, it may be concluded that a mechanism for the adsorption of oily substances on fibers is the chemical adsorption caused by the hydrogen bonding formed between C=O of oily substances and NH or OH of fibers.
社団法人日本分析化学会の論文
1993-05-05