材料科学およびナノ材料ジャーナル

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Scope of Adsorption of Acid Dyes by Chitosan-Viscose Hybrid Material from an Aqueous Solution

Anamul Hoque Bhuiyan, Farjana Sakila, Adnan Maroof Khan and Md. Salauddin SK

In this paper, an establishment of easy and economical way to prepare chitosan-viscose hybrid (CH-viscose) materials is done followed by a pad-dry process in which the cure step was performed in a microwave oven to offer a viscose fabric with greatly enhanced affinity for acid dyes. FTIR spectroscopy showed the evidence of successful interaction between viscose and CH through formation of hydrogen bonding and/or ion dipole interaction. Influence of cure time onto the weight per surface unit of samples has been studied and three CH-viscose hybrid materials with different %CH content namely (I-III) were prepared. Cross-linking of cellulosic chain molecules of viscose fiber through CH segments was confirmed by tensile properties measurements. Applications of CH on viscose samples were then tested as adsorbent by dyeing with two acid dyes (Acid Red N-HFS, Acid Blue N-HFS) in a nonelectrolyte aqueous solution. Dyeing results were investigated using spectrophotometer analyses. Data obtained that treated viscose showed better dye exhaustion and fixation (if alkali be provided) than obtained with untreated one. In a nutshell, the limitation of using acid dyes for viscose may overcome by the use of low %CH content ranging from 0.8 to 1.0.