Benzylated modification and dyeing of ramie fiber in supercritical carbon dioxide

文献类型: 外文期刊

第一作者: Liu, Zhao-Tie

作者: Liu, Zhao-Tie;Liu, Zhong-Wen;Liu, Zhao-Tie;Sun, Zhifeng;Liu, Zhong-Wen;Lu, Jian;Xiong, Heping

作者机构:

关键词: biofibers;degree of polymerization (DP);dyes/pigments;modification;morphology;DISPERSE DYES;NATURAL FIBERS

期刊名称:JOURNAL OF APPLIED POLYMER SCIENCE ( 影响因子:3.125; 五年影响因子:2.754 )

ISSN:

年卷期:

页码:

收录情况: SCI

摘要: The effects of pretreatment conditions, including the addition of a phase-transfer catalyst, on the benzylation of ramie fiber were investigated in this study. Raw and benzylated ramie fibers were dyed in supercritical carbon dioxide, and the color strength (K/S) of the ramie fiber was measured by ultraviolet-visible spectroscopy. An obviously improved dyeing capability of the benzylated ramie fiber, that is, a better level-dyeing property and a higher K/S, was achieved. Moreover, the color strength of the ramie fiber, indexed as the value of K/S, increased significantly with the degree of substitution of the benzylated ramie fiber. The raw and modified ramie fibers were characterized with Fourier transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy, thermogravimetric analysis, and differential scanning calorimetry. (c) 2007 Wiley Periodicals, Inc.

分类号: O63

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