Ma Xue, Zhang Yunyun, Yu Hou-Yong, Jia Bowen, Wang Xiaohua, Chen Xuefei, Yang Xiaohua
Key Laboratory of Intelligent Textile and Flexible Interconnection of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, China.
Key Laboratory of Intelligent Textile and Flexible Interconnection of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, China; State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai 201620, China.
Int J Biol Macromol. 2024 Dec;283(Pt 4):137994. doi: 10.1016/j.ijbiomac.2024.137994. Epub 2024 Nov 22.
Polyamide 66 (PA66) fabric, one of the most common textile materials, presents great fire hazards to human safety and property due to its intrinsic flammability. In this study, fully biobased intumescent flame-retardants (IFRs) composed of cellulose nanocrystals (CNC), tannic acid (TA) and phytic acid (PA) were synthesized and coated onto the surface of the PA66 fabric for improving the flame retardancy, antibacterial and UV resistance. It is found that IFR coating effectively suppressed the droplet and smoke phenomenon of PA66 fabric, and the total smoke production (TSP) and smoke production rate (SPR) values of the fabric were significantly reduced by 71.0 % and 36.7 %, respectively. The synergistic effect of condensed phase and gas phase flame retardancy could be responsible for the remarkable improvement in the flame-retardant property of the treated PA66 fabric (PA66/IFR). Owing to the TA in the IFR coating, PA66/IFR3 fabric showed obvious antibacterial activity and UV resistance. Furthermore, the PA66/IFR3 fabric retained adequate mechanical properties and maintains satisfactory air permeability. This study provides a green and convenient solution for developing multifunctional PA66 fabrics to meet diversified demands.
聚酰胺66（PA66）织物是最常见的纺织材料之一，由于其固有的易燃性，对人类安全和财产构成了巨大的火灾隐患。在本研究中，合成了由纤维素纳米晶体（CNC）、单宁酸（TA）和植酸（PA）组成的全生物基膨胀型阻燃剂（IFR），并将其涂覆在PA66织物表面，以提高其阻燃性、抗菌性和抗紫外线性能。结果发现，IFR涂层有效地抑制了PA66织物的熔滴和冒烟现象，织物的总产烟量（TSP）和产烟速率（SPR）值分别显著降低了71.0%和36.7%。凝聚相和气相阻燃的协同作用可能是处理后的PA66织物（PA66/IFR）阻燃性能显著提高的原因。由于IFR涂层中的TA，PA66/IFR3织物表现出明显的抗菌活性和抗紫外线性能。此外，PA66/IFR3织物保留了足够的机械性能，并保持了令人满意的透气性。本研究为开发多功能PA66织物以满足多样化需求提供了一种绿色便捷的解决方案。
