Polypyrrole-modified multi-functional coatings for improved electro-conductive, hydrophilic and flame-retardant properties of polyamide 66 textiles

IF 2.3 4区 材料科学 Q2 Chemistry Journal of Coatings Technology and Research Pub Date : 2023-02-03 DOI:10.1007/s11998-022-00738-3
Chanchal Kumar Kundu, Zhiwei Li, M. Azizur R. Khan, Michael Försth, Oisik Das
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Abstract

Multi-functional textiles have received much attention in the technical textile field for their novel functionalities available in a single substrate. Polyamide 66 (PA66), being an engineering polymer with excellent physio-mechanical properties, exhibits immense possibilities to be developed as a multifunctional textile substrate. In this work, multi-functional polyamide 66 (PA66) textiles equipped with enhanced electro-conductive, hydrophilic and flame-retardant properties were developed via in situ polymerization of pyrrole monomer onto the PA66 fabric surfaces. Meanwhile, various formulations comprised of phytic acid (PA), chitosan (CS), graphene oxide (GO) and Na-metaborate (B) along with the pyrrole also experimented with a goal to study the contribution of each compound onto the desired properties and finally, to come up with a suitable formulation. Among these formulations, only pyrrole containing formulation (i.e., PA66-PPy) demonstrated a significant improvement in all three desired functionalities, namely a noteworthy escalation in electrical conductivity (i.e., about a 43 times increase compared to the pure PA66), a semi-hydrophilic surface (i.e., water contact angle value was lowered from 124.3– 49.9°) and a substantial reduction in the peak heat release rate by 45%. Meanwhile, the formulation comprising both the pyrrole and phytic acid made the polyamide surface a super-hydrophilic one, whereas other formulations exhibited potential efficacy in attaining better flame retardancy, especially in terms of limiting oxygen index (LOI) values, vertical flame test data and char yield%.

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聚吡咯改性聚酰胺66纺织品导电、亲水性和阻燃性能的多功能涂料
多功能纺织品因其在单一基材上的新功能而受到技术纺织品领域的广泛关注。聚酰胺66 (PA66)是一种具有优异物理力学性能的工程高分子材料,具有广阔的应用前景。本研究通过在PA66织物表面原位聚合吡咯单体,开发了具有增强导电、亲水性和阻燃性能的多功能聚酰胺66 (PA66)纺织品。同时,由植酸(PA)、壳聚糖(CS)、氧化石墨烯(GO)、甲基酸钠(B)以及吡咯组成的各种配方也进行了实验,目的是研究每种化合物对所需性能的贡献,并最终得出合适的配方。在这些配方中,只有含有吡咯的配方(即PA66- ppy)在所有三个期望的功能上都有显著的改善,即电导率的显著提升(即,与纯PA66相比,大约增加了43倍),半亲水表面(即,水接触角值从124.3°降低到49.9°),峰值热释放率大幅降低了45%。同时,含有吡罗和植酸的配方使聚酰胺表面具有超亲水性,而其他配方在获得更好的阻燃性方面表现出潜在的功效,特别是在极限氧指数(LOI)值、垂直火焰测试数据和炭产率%方面。图形抽象
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来源期刊
Journal of Coatings Technology and Research
Journal of Coatings Technology and Research CHEMISTRY, APPLIED-MATERIALS SCIENCE, COATINGS & FILMS
CiteScore
4.40
自引率
8.70%
发文量
0
期刊介绍: Journal of Coatings Technology and Research (JCTR) is a forum for the exchange of research, experience, knowledge and ideas among those with a professional interest in the science, technology and manufacture of functional, protective and decorative coatings including paints, inks and related coatings and their raw materials, and similar topics.
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