A facile in situ grafting strategy for fabricating flame retardant lyocell fabrics

IF 4.9 2区化学 Q2 CHEMISTRY, PHYSICAL

Colloids and Surfaces A: Physicochemical and Engineering Aspects Pub Date : 2025-05-01 DOI:10.1016/j.colsurfa.2025.137107

Qiuyan Zhang , Xiaohui Liu , Chen Ding , Yuanlin Ren , Huichuan Zhao , Peng Chen

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Abstract

A facile in situ grafting strategy was elaborately designed to fabricate flame-retardant lyocell fabrics. Acrylamide first immobilized to the surface of lyocell fabrics via an additional reaction between carbon-carbon double bonds and oxygen-free radicals derived from the activated cellulose chain. Diphenylphosphinyl chloride was grafted through the intermediate bridge acrylamide. The combination of acrylamide and diphenylphosphinyl chloride significantly retarded the heat release rate and total heat release and efficiently promoted the formation of rigid and swollen carbonaceous structures. The obtained fire-resistant lyocell fabrics (C-g-AD) with an LOI value (30.6 %) were immediately extinguished after exposed flame for more than 30 s with only 48 mm char length. Besides, the thermal degradation rate of C-g-AD sharply decreased by 17.1 % and 14.7 % in nitrogen and air, respectively. Herein, C-g-AD fabricated by the present strategy exhibited outstanding flame retardancy.

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一种制造阻燃莱赛尔织物的简易原位接枝策略

精心设计了一种简便的原位接枝策略来制备阻燃lyocell织物。丙烯酰胺首先通过碳-碳双键与活化纤维素链产生的氧自由基之间的额外反应固定在莱赛尔织物的表面。二苯基膦酰氯通过中间桥接丙烯酰胺接枝。丙烯酰胺与二苯基膦酰氯的组合显著延缓了放热速率和放热总量，有效促进了刚性和膨胀性碳质结构的形成。所获得的阻燃lyocell织物（C-g-AD）的LOI值为30.6 %，在暴露火焰超过30 s后立即熄灭，炭长仅为48 mm。C-g-AD在氮气和空气中的热降解率分别急剧下降17.1 %和14.7 %。本方法制备的C-g-AD具有优异的阻燃性。

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来源期刊

Colloids and Surfaces A: Physicochemical and Engineering Aspects 化学-物理化学

CiteScore

8.70

自引率

9.60%

发文量

2421

审稿时长

56 days

期刊介绍： Colloids and Surfaces A: Physicochemical and Engineering Aspects is an international journal devoted to the science underlying applications of colloids and interfacial phenomena. The journal aims at publishing high quality research papers featuring new materials or new insights into the role of colloid and interface science in (for example) food, energy, minerals processing, pharmaceuticals or the environment.