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The Pretreatment of Ramie Fiber Material with Supercritical CO2 Fluid
Abstract:
This study presents a new application of supercritical CO2 (scCO2) fluid technology for the pretreatment of ramie fiber materials. It was proved that the scCO2 fluid could prominently eliminate the impurities of the ramie fibers. In particular, the lignin of ramie fibers, which usually needs to be removed in strong alkaline solutions, could be greatly eliminated by the scCO2 fluid, especially in the presence of some swelling agent. The pretreatment with scCO2 fluid resulted in the swelling and expansion of ramie fibers, which favors the further dyeing or finishing of ramie fabric.
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139-143
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November 2012
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© 2012 Trans Tech Publications Ltd. All Rights Reserved
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