Advanced multifunctional fabrics enabled by bioinspired coatings

IF 6.5 2区材料科学 Q1 CHEMISTRY, APPLIED

Progress in Organic Coatings Pub Date : 2024-08-31 DOI:10.1016/j.porgcoat.2024.108737

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Abstract

The demand for textiles with functional properties has been increasing over the past few decades, driven by both civilian and military applications. In this study, we present a method to impart flame retardant (FR) and insect repellent (IR) properties to nylon-cotton blends. Flame retardancy was achieved by covalently attaching phytic acid, a bio-derived material, to the hydroxyl groups of cotton in nyco fabrics. Subsequently, these FR-treated nyco fabrics were coated with an acylate-based monomer along with permethrin to confer insect-repellent properties. FTIR-ATR spectroscopy confirmed the presence of weight of phytic acid on nyco fabric and the weight gain from this was 6 % with respect to initial fabric weight. The multifunctional fabrics exhibited a 200 % increase in char formation upon thermal degradation compared to untreated nyco. Moreover, the multifunctional fabrics demonstrated self-extinguishing properties with a char length of <15 cm, whereas untreated fabrics burned completely. In cone calorimeter experiments, FR-treated fabrics showed a reduction of over 25 % in total heat release compared to untreated controls. The addition of FR facilitates char formation and the release of non-flammable gases such as water vapor (H₂O), carbon dioxide (CO₂), and ammonia (NH₃), suggesting a condensed phase mechanism of FR action as evident from TGA-FTIR evolved gas analysis. The insect repellent properties (IR) were evaluated using a tube test method as described by the World Health Organization, revealing a knockdown rate exceeding 98 % for fabrics treated with insect repellent.

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通过生物启发涂层实现先进的多功能织物

过去几十年来，在民用和军事应用的推动下，对具有功能特性的纺织品的需求与日俱增。在本研究中，我们介绍了一种赋予尼龙-棉混纺物阻燃（FR）和驱虫（IR）特性的方法。阻燃是通过将植酸（一种生物衍生材料）共价连接到尼可织物中棉花的羟基上实现的。随后，在这些经过阻燃处理的 nyco 织物上涂覆酰基单体和氯菊酯，使其具有驱虫特性。傅立叶变换红外-原子吸收光谱证实了植酸在尼科织物上的存在，其重量比初始织物重量增加了 6%。与未经处理的 nyco 相比，多功能织物在热降解过程中形成的炭增加了 200%。此外，多功能织物还具有自熄特性，炭化长度为 15 厘米，而未经处理的织物则完全燃烧。在锥形量热计实验中，与未经处理的对照组相比，经过阻燃剂处理的织物总释放热量减少了 25% 以上。添加阻燃剂促进了炭的形成以及水蒸气（H2O）、二氧化碳（CO2）和氨（NH3）等不可燃气体的释放，从 TGA-FTIR 气体进化分析中可以明显看出阻燃剂的凝聚相作用机制。使用世界卫生组织描述的试管测试法对其驱虫特性（IR）进行了评估，结果表明使用驱虫剂处理的织物的驱虫率超过 98%。

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来源期刊

Progress in Organic Coatings 工程技术-材料科学：膜

CiteScore

11.40

自引率

15.20%

发文量

577

审稿时长

48 days

期刊介绍： The aim of this international journal is to analyse and publicise the progress and current state of knowledge in the field of organic coatings and related materials. The Editors and the Editorial Board members will solicit both review and research papers from academic and industrial scientists who are actively engaged in research and development or, in the case of review papers, have extensive experience in the subject to be reviewed. Unsolicited manuscripts will be accepted if they meet the journal''s requirements. The journal publishes papers dealing with such subjects as: • Chemical, physical and technological properties of organic coatings and related materials • Problems and methods of preparation, manufacture and application of these materials • Performance, testing and analysis.

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