Surface Modification of Wool Fabric with Chitosan and Gamma Radiation

Md Suhel Rana,Md Rifat Farabi Sourov,Md Abdullah Al Mamun,Sajib Biswas

doi:10.13189/mst.2017.040101

Abstract

Surface modification of wool was done with chitosan, gamma radiation and combined chitosan/gamma radiation to analyze how polymer loading%, k/s value, dye uptake% and wash fastness property vary of the dyed fabric. In this investigation scoured and bleached knitted wool fabric was treated with 0.1%, 0.3%, 0.5%, 0.7% and 1% chitosan and polymer loading was found as of 1.21%, 1.38%, 0.32%, 0.14% and 0.48% respectively. It was found that polymer loading % increase significantly with the decrease of chitosan concentration % up to a certain limit. Some samples were irradiated with 5kGy, 10kGy, 20kGy and 50kGy gamma radiation individually. Combined chitosan/gamma treatment was carried out by treating with 0.1% chitosan followed by treatment with 5kGy, 10kGy, 20kGy and 50kGy gamma radiation. The infrared spectrum of wool specimens were analyzed by Fourier Transform Infrared Spectrometer (FT-IR). It was found that the infrared spectrum of untreated and treated wool specimens were approximately same except the peak absorbs at 1340-1265 cm-1 which indicate the C-N stretch absorption of aromatic amines. After dyeing k/s value of untreated and treated wool specimens were measured using Data color 600®. There was a remarkable variation of k/s value on different treatment process. Dye uptake% of untreated and treated wool specimens were determined by using UV Visible Spectrophotometer in terms of absorbency. Color fastness to wash was measured using ISO standard. There was no significant change of wash fastness property of treated and untreated wool.

Highlights

Modification is generally used to designate a deliberate change in composition or structure leading to an improvement in different type of fiber properties
Fourier Transform Infrared Spectrometer (FT-IR) had been utilized to determine the impact of the different treatment process on the properties of the diverse
FT-IR analysis shows the effectiveness of different treatment techniques

Summary

Introduction

Modification is generally used to designate a deliberate change in composition or structure leading to an improvement in different type of fiber properties. Surface modification of the polymeric fibers without changing the mass properties has been a classical research topic for many years which is widespread studies as new applications of polymeric materials develop, in the fields of biotechnology, bio-engineering, and recently in nanotechnology. Wool is a protein fiber which is utilized for suiting, shawl, cover and covers, it has distinct demerits like shrinkage in order to presence of cuticle scales on the surface of the fiber. Modification of the outer epicuticle and executable imparts lucrative improvement to wool like dye ability, printability, and wettability.[4] Major part of wool fiber is protein named keratin which is consists of two major morphological parts: cortex cells (90 % of the wool’s weight) and the adjacent cuticle cells (10 % of the wool’s weight). Spectroscopy”, Available from www.researchgate.com, Accessed on Sep 25, 2016 at 11:36PM

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