Hydrophilic and antibacterial surface functionalization of polyamide fabric by coating with polylysine biomolecule

材料科学 接触角 涂层 润湿 戊二醛 表面改性 扫描电子显微镜 聚酰胺 复合材料 化学工程 纤维 生物分子 聚酯纤维 吸附 纳米技术 有机化学 化学 工程类
作者
Wen Zhang,Jinxing Li,Ren‐Cheng Tang,Ai-Dong Zhai
出处
期刊:Progress in Organic Coatings [Elsevier BV]
卷期号:142: 105571-105571 被引量:43
标识
DOI:10.1016/j.porgcoat.2020.105571
摘要

Polyamide (PA) fiber is the second largest synthetic fiber, and extensively applied in underwear, outerwear, sports/leisure wear and decorative fabrics. However, PA textiles have poor wearing comfort resulting from their inherent hydrophobicity, and do not possess antibacterial function which is vital for preventing bacterial infections. To address these issues, this study employed polylysine (PLL) biomolecule to fabricate the hydrophilic and antibacterial surface on PA fabric by a dip coating technique. The Schiff base reaction between the aldehyde groups of glutaraldehyde and the amino groups of PLL and PA fiber was utilized to increase washing resistance. The effects of the dip coating conditions of PLL on the hydrophilicity of PA fabric were studied by the wetting time of water droplet. The hydrophilicity imparted to PA fabric by PLL coating was further confirmed by water contact angle, moisture adsorption and capillary effect tests. The PLL coated fabric exhibited excellent hydrophilic and antibacterial properties with good washing durability. The functional surface of the PLL coated fabric was proved by scanning electron microscope, X-ray photoelectron spectroscopy, and charge effect. The present research suggests that PLL biomolecule can be used as a surface coating agent for simultaneously imparting hydrophilic and antibacterial functions to PA fiber.
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