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%.

Graphic abstract

中文翻译：

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胶原蛋白溶液上浆的棉纱的微观结构，形态和强度

摘要

为了在编织前对棉纱上浆，已经提出了一种基于可生物降解的聚合物-胶原的新组合物。检测到涂覆有胶原溶液的纱线的FT-IR光谱的变化表明在胶原的伯氨基和仲氨基与纤维素羟基之间明显形成新的分子间氢键。这种键的形成有助于棉线表面上的胶原膜的增强。SEM研究表明，与未上浆和未上浆淀粉的线相比，线的微观结构和纤维的形态有显着改善。用胶原蛋白溶液上浆时，线径减小14％，而用淀粉溶液上浆时减小18％。在胶原蛋白上浆的情况下，以及粘结，压实的情况下，观察到纤维的纵向取向。胶原蛋白上浆的纤维素纤维的直径在12-15微米之间。不同于淀粉，淀粉填充纤维间空间，甚至渗透到单个管状纤维中，胶原蛋白仅均匀地位于纤维表面上。使用胶原蛋白基组合物上浆时，改善纤维素纤维和线的微观结构和形态可减少上浆剂的消耗，使线的线密度增加15–20％，使断裂负荷增加25 –35％，断裂伸长率降低15–20％。胶原蛋白仅均匀地位于纤维表面上。使用胶原蛋白基组合物上浆时，改善纤维素纤维和线的微观结构和形态可减少上浆剂的消耗，使线的线密度增加15–20％，使断裂负荷增加25 –35％，断裂伸长率降低15–20％。胶原蛋白仅均匀地位于纤维表面上。使用胶原蛋白基组合物上浆时，改善纤维素纤维和细丝的微观结构和形态可减少上浆剂的消耗，使线的线密度增加15–20％，使断裂负荷增加25 –35％，断裂伸长率降低15–20％。

图形摘要