聚多巴胺/壳聚糖改性棉织物的茶色素染色及其抗菌和防紫外线性能  

Tea pigment dyeing of cotton fabric modified with polydopamine/chitosan and its antibacterial and anti-ultraviolet properties

作　　者：李丽丽 袁亮 唐雨霞 杨文菊 王浩[1] LI Lili;YUAN Liang;TANG Yuxia;YANG Wenju;WANG Hao(School of Materials and Chemistry,Anhui Agricultural University,Hefei,Anhui 230036,China;Ma′anshan Fiber Inspection Institute,Ma′anshan,Anhui 243011,China)

机构地区：[1]安徽农业大学材料与化学学院,安徽合肥230036 [2]马鞍山市纤维检验所,安徽马鞍山243011

出　　处：《纺织学报》2024年第3期106-113,共8页Journal of Textile Research

基　　金：科技部“科技助力经济”重点专项(国科发资[2020]151号);安徽省科技重大专项(202103a06020005)。

摘　　要：为提高棉织物的天然色素染色性和多功能性,利用CuSO_(4)/H_(2)O_(2)氧化体系下多巴胺(DA)在织物表面快速聚合沉积后,采用壳聚糖(CS)整理制备聚多巴胺/壳聚糖(PDA/CS)改性棉织物,再用茶色素对其进行染色处理。探究了DA快速聚合沉积过程中各因素对改性棉织物染色性能的影响,得到较佳工艺条件:CuSO_(4)浓度为3 mmol/L,DA质量浓度为2.0 mg/mL,H_(2)O_(2)浓度为13 mmol/L,沉积时间为2 h。在此条件下,PDA/CS改性棉织物染色后的K/S值达到6.21。研究结果表明:CuSO_(4)/H_(2)O_(2)氧化体系下DA在棉织物表面形成PDA层,可与CS产生氢键作用在织物表面均匀成膜;茶色素染色PDA/CS改性棉织物的耐摩擦色牢度、耐皂洗色牢度(沾色)和耐人造光色牢度均达到4级及以上;PDA/CS改性织物染色后的UPF值为312,对金黄色葡萄球菌与大肠杆菌的抑菌率达到90%以上,具备抗菌和防紫外线的双重功效。Objective Plant dyes have attracted widespread attention in the textile industry due to their environmental and functional health benefits.To improve the dyeing durability and functionality of fabrics treated with plant dyes,chemical crosslinking agents or mordants are often used,which is harmful to the environment and human health.It is necessary to develop eco-friendly methods of plant dyes for fabric finishing,imparting fabrics good color fastness and multifunctionality.Method Polydopamine/chitosan(PDA/CS)modified cotton fabrics were prepared by using chitosan(CS)finishing after rapid polymerization and deposition of dopamine(DA)on the fabric surface under CuSO_(4)/H_(2)O_(2)oxidation system,and then dyed with tea pigment.The structure and morphology of the fabrics before and after modification were characterized and analyzed through scanning electron microscope,Fourier transform infrared spetroscopy and X-ray photoelectron spectroscopy.The color fastness,antibacterial and UV resistance properties of different modified cotton fabrics dyed with tea pigment were compared and analyzed.Results The effect of various factors on the dyeing performance of the modified cotton fabrics during the rapid polymerization and deposition of DA were investigated,and the better process conditions were obtained:CuSO_(4)concentration of 3 mmol/L,DA concentration of 2.0 mg/mL,H_(2)O_(2)concentration of 13 mmol/L,and deposition time of 2 h.The K/S value of the PDA/CS modified cotton fabrics after dyeing reached 6.21.The fiber morphology and structure showed that the surface of PDA modified cotton fiber was obviously covered with a layer of PDA coating,which made CS uniformly film on the fabric surface,and the surface substance of PDA/CS modified cotton fabrics was further increased after dyeing with tea pigment.The chemical structure analysis showed that the intensity of the characteristic absorption peaks near 3342 cm^(-1) of the PDA modified cotton fabrics increased significantly after CS treatment,indicating that hydrogen bonding

关 键 词：棉织物 聚多巴胺 壳聚糖 茶色素染色 天然染料 功能整理 

分 类 号：TS195.6[轻工技术与工程—纺织化学与染整工程]