Microstructure, morphology and strength of cotton yarns sized by collagen solution
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ORIGINAL RESEARCH
Microstructure, morphology and strength of cotton yarns sized by collagen solution Adham Salimovich Rafikov . Mukaddas Shamuratovna Khakimova . Dilfuza Azim qizi Fayzullayeva . Azimbay Fayzullayevich Reyimov
Received: 6 May 2020 / Accepted: 10 September 2020 Ó Springer Nature B.V. 2020
Abstract For sizing cotton yarn before weaving, a new composition based on a biodegradable polymer— collagen, has been proposed. The detected changes in the FT-IR spectra of the yarn coated with a collagen solution indicate the obvious formation of new intermolecular hydrogen bonds between the primary and secondary amino groups of the collagen and the cellulose hydroxyl groups. The formation of such bonds contributed to the strengthening of the collagen film on the surface of cotton threads. SEM studies have shown a significant improvement in the microstructure of threads and the morphology of fibers compared with threads not sized and sized with starch. When sizing with a collagen solution, the diameter of the threads decreases by 14%, when sizing with a starch
solution—by 18%. In cases of collagen sizing, along with bonding, compaction, a longitudinal orientation of the fibers is observed. The diameter of the cellulose fibers sized with collagen is in the range of 12–15 microns. Unlike starch, which fills the interfiber spaces and even penetrates into individual tubular fibers, collagen is evenly located only on the surface of the fibers. Improving the microstructure and morphology of cellulose fibers and threads when sizing with a collagen-based composition leads to a reduction in the consumption of sizing agent, an increase in the linear density of threads by 15–20%, an increase in breaking load by 25–35%, and a decrease in elongation at break by 15–20%.
A. S. Rafikov (&) M. S. Khakimova D. A. Fayzullayeva A. F. Reyimov Tashkent Institute of Textile and Light Industry, Tashkent city, Republic of Uzbekistan e-mail: [email protected] M. S. Khakimova e-mail: [email protected] D. A. Fayzullayeva e-mail: [email protected] A. F. Reyimov e-mail: [email protected]
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Cellulose
Graphic abstract
Keywords Sizing Collagen Cotton thread Microstructure Strength Elongation at break
Introduction The preparation of warp yarns plays a significant role in achieving high quality in the modern weaving industry. To obtain high-quality spinning fabric on a high-speed loom, yarns are required that have a uniform sizing, a uniform percentage of moisture (Ali Hamdani 2017). For sizing weaving, water-soluble natural (starch, cellulose derivatives, proteins) and synthetic (polyvinyl alcohol (PVA), polyacrylic acid, polyacrylamide) polymers are used (Hu and Babu 2007). Starch based compositions are inexpensive and provide good cotton sizing performance (Bismark et al. 2019), but they have serious drawbacks. Existing methods for sizing cotton yarn based on the use of natural unmodified starches and flour are not promising, since solutions based on them d
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