Effect of Concentrated Alkali Treatment on the Properties of Naturally Colored Brown Cotton

Li Chen; Yu Sen Liu; Wei Guo Sun; Xiao Yan Zhou

doi:10.4028/www.scientific.net/AMR.332-334.173

Paper Titles

Research of Structure and Properties of Puffed Tussah Silk
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Optimization of Simple Medium for Exopolysaccharide Production by Agaricus Brunnescens
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A Study on the Antibacterial Property of the Extract from Apocynum Venetum
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Study on Adsorption and Desorption Performance of Reactive Dyes on Anionic Exchange Membrane
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Effect of Concentrated Alkali Treatment on the Properties of Naturally Colored Brown Cotton
p.173

Cationic Modification Process’s Depth Exploration of Cotton Fibers
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Influence of Degumming Methods on Mechanical Properties of Silk and CODcr of Wastewater
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Synthesis and Properties of New Anionic Fluorescent Brighteners
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Research on the Spinnability of the Renewable Cattail Fiber
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 332-334Effect of Concentrated Alkali Treatment on the...

Effect of Concentrated Alkali Treatment on the Properties of Naturally Colored Brown Cotton

Abstract:

The naturally colored cotton fiber was treated by sodium hydroxide solution with different concentrations and temperatures.The surface morphology,crystalline structure, mechanical properties and color feature value of fiber after treatment were tested by SEM,XRD,electronic single fiber strength tester and Computer Color Matching meter.The results show that the longitudinal convolutions of the naturally colored cotton fiber treated by concentrated sodium hydroxide decreased or disappeared,and the fiber became nearly cylindrical or cylindrical.The crystallinity of fiber after treatment decreased,part of the celluloseⅠ changed into celluloseⅡ．The breaking strength and breaking elongation of fiber after treatment increased.The total color differences（ΔE） and value a*of fiber after treatment increased，to the contrary，value L* and value b* decreased，which leaded to that the color of fiber treated by alkali became darker．In addition,the treatment temperature had larger influence on the properties of fiber.