MXene assisted simple recycle of waste cellulose fiber with alginate fiber into fireproof and electromagnetic interference shielding composite

IF 6.3 2区化学 Q1 POLYMER SCIENCE Polymer Degradation and Stability Pub Date : 2024-08-14 DOI:10.1016/j.polymdegradstab.2024.110955

Xiaolin Zhang , Lin Weng , Mingyu Chen , Defang Zhao , Qi Wang , Zhe Liu

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Abstract

Textile wastes rapidly grow into a challenge when a significant portion of them are processed by landfilling or incineration, leading to hazardous solid and volatile pollutants. This work investigated the utilization of wasted cellulose fiber by recycling it with calcium alginate fiber into a fireproof composite filler as a circular economy strategy, followed by the modification with MXene dispersion to further enhance its fire resistance and offer it the electromagnetic interference shielding ability. A comprehensive investigation elucidated the flame retardant mechanism of the composite felt via studying its combustion behavior, the microstructural morphology of residue char, and the gasous compounds produced. The results indicated that this composite felt generated a large number of nonflammable gas species and fibrous residue char, serving as a natural barrier to impede the fuel supply and suppress heat diffusion, thereby endowing the composite felt with an outstanding fire retardant performance and reduced carbon footprint. Compared to other textile waste recycling processes, the opening-carding-needling punch technique employed in this study was more energy-efficient and environmentally friendly. The recycling of waste cellulose fiber into functional fireproof composites not only extended the practical applications of waste resources but also mitigated the negative environmental impact of textile disposal.

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用海藻酸纤维辅助 MXene 对废纤维素纤维进行简单回收，制成防火和电磁干扰屏蔽复合材料

当相当一部分纺织废物被填埋或焚烧处理时，就会产生有害的固体和挥发性污染物，从而迅速发展成为一项挑战。这项工作研究了如何利用废弃的纤维素纤维，将其与海藻酸钙纤维一起回收制成防火复合填料，以此作为一种循环经济策略，然后用 MXene 分散体进行改性，以进一步提高其防火性能并提供电磁干扰屏蔽能力。通过研究复合毡的燃烧行为、残留炭的微观结构形态以及产生的含气化合物，对其阻燃机理进行了全面的研究。结果表明，这种复合毡产生了大量的不可燃气体和纤维状残炭，成为阻碍燃料供应和抑制热扩散的天然屏障，从而使复合毡具有出色的阻燃性能，并减少了碳足迹。与其他纺织废料回收工艺相比，本研究采用的开松-梳理-针刺冲孔技术更加节能环保。将废纤维素纤维回收利用到功能性防火复合材料中，不仅扩大了废弃资源的实际应用范围，还减轻了纺织品处理对环境的负面影响。

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来源期刊

Polymer Degradation and Stability 化学-高分子科学

CiteScore

10.10

自引率

10.20%

发文量

325

审稿时长

23 days

期刊介绍： Polymer Degradation and Stability deals with the degradation reactions and their control which are a major preoccupation of practitioners of the many and diverse aspects of modern polymer technology. Deteriorative reactions occur during processing, when polymers are subjected to heat, oxygen and mechanical stress, and during the useful life of the materials when oxygen and sunlight are the most important degradative agencies. In more specialised applications, degradation may be induced by high energy radiation, ozone, atmospheric pollutants, mechanical stress, biological action, hydrolysis and many other influences. The mechanisms of these reactions and stabilisation processes must be understood if the technology and application of polymers are to continue to advance. The reporting of investigations of this kind is therefore a major function of this journal. However there are also new developments in polymer technology in which degradation processes find positive applications. For example, photodegradable plastics are now available, the recycling of polymeric products will become increasingly important, degradation and combustion studies are involved in the definition of the fire hazards which are associated with polymeric materials and the microelectronics industry is vitally dependent upon polymer degradation in the manufacture of its circuitry. Polymer properties may also be improved by processes like curing and grafting, the chemistry of which can be closely related to that which causes physical deterioration in other circumstances.