Flame-retardant Janus ramie fabric with unidirectional liquid transportation, moisture-wicking, and oil/water separation properties

IF 13.3 1区 工程技术 Q1 ENGINEERING, CHEMICAL
Huihui Wang , Cheng Hao , Tong Shu , Pandeng Li , Tianyi Yu , Longjiang Yu , Ning Yan
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引用次数: 1

Abstract

Janus fabrics are often used for oil/water separation, fog-harvesting, and moisture-wicking clothing due to their unidirectional liquid transport (ULT) ability. However, Janus fabrics are usually mono-functional, and the fabrication process is complex. Moreover, the chemicals used are not green. Herein, a versatile Janus fabric from ramie with ULT, flame retardancy, and moisture-wicking features was fabricated using a facile and sustainable method. Chitosan and phytic acid were rapidly deposited on the surface of fabrics via electrostatic gravitation, and polydivinylbenzene was then used as coating after in situ polymerization. Reverse wettability was achieved on two sides of the Janus ramie fabric after the UV irradiation of one of the sides, which endowed the fabric with ULT ability. Janus ramie fabric exhibited a comparable water vapor transmission rate to that of pristine ramie fabric but a higher water evaporation rate because of its ULT ability, indicating an improved moisture-wicking ability. Furthermore, the Janus ramie fabric displayed a good oil/water mixture separation performance with a separation efficiency of over 98% and good mechanical abrasion and chemical resistance. More importantly, the Janus ramie fabric showed excellent flame retardancy, a self-extinguishing ability, and a high limiting oxygen index of 34.5%, and its heat release rate, heat release capacity, and total heat release rate were significantly lower than those of pristine fabric. Therefore, this versatile Janus ramie fabric demonstrates great potential for various practical applications.

Abstract Image

具有单向液体输送、吸湿排汗、油水分离性能的阻燃苎麻织物
由于其单向液体输送(ULT)能力,Janus织物通常用于油/水分离,雾收集和吸湿衣物。然而,Janus织物通常是单一功能的,制造过程是复杂的。此外,所用的化学物质也不环保。在这里,用一种简单和可持续的方法制造了一种多功能的Janus织物,它是由苎麻制成的,具有ULT、阻燃性和排湿功能。通过静电重力作用将壳聚糖和植酸快速沉积在织物表面,经原位聚合后用聚二乙烯苯作为涂层。对斜纹苎麻织物的一面进行紫外线照射后,其两面都发生了反润湿,从而使织物具有了超低温吸水性。苎麻织物的水蒸气透过率与原始苎麻织物相当,但由于其超低吸水能力,其水分蒸发率更高,表明其排湿能力有所提高。此外,Janus苎麻织物具有良好的油水混合物分离性能,分离效率达98%以上,具有良好的机械耐磨性和耐化学性。更重要的是,苎麻织物具有优异的阻燃性、自熄能力和较高的极限氧指数(34.5%),其放热率、放热容量和总放热率均显著低于原始织物。因此,这种多功能的Janus苎麻织物在各种实际应用中显示出巨大的潜力。
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来源期刊
Chemical Engineering Journal
Chemical Engineering Journal 工程技术-工程:化工
CiteScore
21.70
自引率
9.30%
发文量
6781
审稿时长
2.4 months
期刊介绍: The Chemical Engineering Journal is an international research journal that invites contributions of original and novel fundamental research. It aims to provide an international platform for presenting original fundamental research, interpretative reviews, and discussions on new developments in chemical engineering. The journal welcomes papers that describe novel theory and its practical application, as well as those that demonstrate the transfer of techniques from other disciplines. It also welcomes reports on carefully conducted experimental work that is soundly interpreted. The main focus of the journal is on original and rigorous research results that have broad significance. The Catalysis section within the Chemical Engineering Journal focuses specifically on Experimental and Theoretical studies in the fields of heterogeneous catalysis, molecular catalysis, and biocatalysis. These studies have industrial impact on various sectors such as chemicals, energy, materials, foods, healthcare, and environmental protection.
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