The Influence of Non-selective Oxidation on Differently Pre-treated Cotton Yarns Properties
<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 p...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Kaunas University of Technology
2016-09-01
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| Series: | Medžiagotyra |
| Subjects: | |
| Online Access: | http://matsc.ktu.lt/index.php/MatSc/article/view/12110 |
| Summary: | <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> |
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| ISSN: | 1392-1320 2029-7289 |