针对Lyocell织物的易燃性及抗紫外线性能差的问题,为提高其使用安全性和绿色环保性,采用层层自组装(LbL)技术,利用生物基植酸(PA)和茶多酚(TP)协同作用,成功制备了具有阻燃和抗紫外线性能的Lyocell织物,并对整理前后的织物的微观形貌、化学结构,以及热稳定性能、阻燃性能、抗紫外线和透气性等进行表征。结果表明,在800℃时,经过PA/TP功能整理后的织物L-3的热稳定性和残炭率(39.8%)明显提升,显著优于未整理织物L-0(残炭率8.6%);在垂直燃烧测试中,织物L-3残炭长度为7.5cm,表现出优异的阻燃性能和自熄特性;且经过七层组装后,L-3的透气率为268.64mm/s,与L-0的透气率(327.13mm/s)相比,仅下降17.7%,仍具有良好的透气性;抗紫外线性能测试中,织物L-3的UPF值为78.35,其中UVA和UVB值分别降至1.53%和1.83%,表现出优异的抗紫外线性能。
To address the inherent flammability and poor ultraviolet (UV) resistance of Lyocell fabric and enhance its safety and environmental sustainability,a bio-based layer-by-layer (LbL) self-assembly strategy was employed using the synergistic effects of phytic acid (PA) and tea polyphenols (TP) to successfully prepare Lyocell fabric with flame-retardant and UV-resistant properties.The microstructure,chemical composition,thermal stability,flame retardancy,UV resistance,and air permeability of the fabrics before and after treatment were systematically characterized.The results demonstrated that at 800℃,the thermal stability and char residue (39.8%) of the PA/TP-treated fabric L-3 were significantly improved compared to the untreated fabric L-0 (char residue rate 8.6%).In vertical flame tests,fabric L-3 exhibited excellent flame-retardant performance and self-extinguishing behavior,with a residual char length of 7.5cm.Even after seven bilayers of assembly,the air permeability of L-3 remained as high as 268.64mm/s,showing only a 17.7% decrease compared to L-0 (327.13mm/s),indicating good breathability.In the UV resistance test,the UV protection factor (UPF) of L-3 reached 78.35,while the transmittance of UVA and UVB was reduced to 1.53% and 1.83%,respectively,demonstrating outstanding UV shielding performance.
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基金资助
新疆东纯兴集团和新疆大学纺织与服装学院莱赛尔纤维的原纤化控制与新产品开发横向项目(202410140011);新疆维吾尔自治区“天池英才”项目(51052300583);新疆维吾尔自治区高校基本科研业务费科研项目(XJEDU2023P031);新疆大学博士科研启动基金项目(620323014)
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