The Influence of Non-selective Oxidation on Differently Pre-treated Cotton Yarns Properties

• Main Authors: Emilija TOSHIKJ, Igor JORDANOV, Vesna DIMOVA, Biljana MANGOVSKA
• Format: Article
• Language: English
• Published: Kaunas University of Technology 2016-09-01
• Series: Medžiagotyra
• Subjects: oxidation, cotton, degradation, carboxyl groups, functionalization
• Online Access: http://matsc.ktu.lt/index.php/MatSc/article/view/12110

<p>Differntly pre-treated cotton yarns were subjected to non-selective oxidation with perchloric acid and the effects of pre-treatment processes on oxidation were studied through functional groups quantity, and degradation through mechanical properties and degree of polymerization. Different pre-treatments include, different scouring (with alkali, alkaline and acid pectinase), mercerization-different scouring as well as different scouring-mercerization. The quantity of functional groups was studied by measuring carboxyl groups with methylene blue and calcium-acetate methods and aldehyde groups with iodine and tetrazolium (TTC) methods. Pre-treatment processes affect the degree of elimination of non-cellulosic components of cotton and have strong influence on oxidation process. The non-selective oxidation of enzymatic scoured cotton with perchloric acid has introduced carboxyl and aldehyde groups without serious degradation of cotton yarns, confirmed by only 15 % decreasing of tensile strength and 8 % decreasing of degree of polymerization.</p><p>DOI: <a href="http://dx.doi.org/10.5755/j01.ms.22.3.12110">http://dx.doi.org/10.5755/j01.ms.22.3.12110</a></p>