无溶剂合成具有π -π共轭的磷基阻燃剂以提高棉织物的耐久性

IF 7.3 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Hejun Li, Jieyu Wei, Tian Li, Yonghua Lu, Mengxiao Liang, Hao Zhou, Qing Jing and Guangxian Zhang*, 
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引用次数: 0

摘要

采用简单、环保的方法制备耐用的阻燃棉织物对可持续发展至关重要。以乙酸乙酯和五氧化二磷为原料,采用无溶剂合成法合成了一种新型无卤、无甲醛棉织物耐用阻燃剂(EPDDPA)。结果表明,经epddpa处理的棉织物具有优异的阻燃性和耐久性。当EPDDPA用量为30%时,织物的极限氧指数高达57.6%,洗涤50次后仍保持在49.8%。热重分析、锥量热分析、热重-红外耦合分析、垂直可燃性测试和LOI测试结果表明,EPDDPA促进了棉织物的脱水和炭的形成。这表明EPDDPA的作用机制为凝聚相机制。EPDDPA中π -π共轭效应降低了与棉织物接枝形成的P(O) -O-C共价键的极性,显著提高了其稳定性。epddpa处理后的峰值放热率和总放热率分别下降了90.9%和20.1%。织物的强度、白度和透气性得到很好的保持,柔软度得到改善。这项工作为生产耐用阻燃棉织物提供了一种简单、绿色的方法。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Solvent-Free Synthesis of a Phosphorus-Based Flame Retardant with π–π Conjugation for Enhancing the Durability of Cotton Fabrics

Solvent-Free Synthesis of a Phosphorus-Based Flame Retardant with π–π Conjugation for Enhancing the Durability of Cotton Fabrics

Preparing durable flame-retardant cotton fabrics via straightforward and green methods is crucial for sustainable development. A novel halogen-free and formaldehyde-free durable flame retardant (EPDDPA) for cotton fabrics was synthesized by a solvent-free synthesis method, with ethyl acetoacetate and phosphorus pentoxide as raw materials. The results demonstrated that EPDDPA-treated cotton fabrics exhibited excellent flame retardancy and remarkable durability. For fabrics treated with 30 wt % EPDDPA, the limiting oxygen index value reached as high as 57.6% and remained at 49.8% even after 50 laundering cycles. The results of thermogravimetric analysis, cone calorimetry tests, coupled thermogravimetric-infrared analysis, vertical flammability tests, and LOI tests demonstrated that EPDDPA promoted dehydration and char formation of cotton fabrics. This suggested a condensed-phase mechanism of EPDDPA. The π–π conjugation effect in EPDDPA reduced the polarity of the P(═O)–O–C covalent bond formed by grafting with cotton fabrics and significantly enhanced its stability. The peak heat release rate and total heat release of EPDDPA-treated cotton decreased by 90.9 and 20.1%, respectively. Additionally, the strength, whiteness, and air permeability of the treated fabrics were well maintained, while the softness was improved. This work provides a straightforward and green method for manufacturing durable flame-retardant cotton fabrics.

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来源期刊
ACS Sustainable Chemistry & Engineering
ACS Sustainable Chemistry & Engineering CHEMISTRY, MULTIDISCIPLINARY-ENGINEERING, CHEMICAL
CiteScore
13.80
自引率
4.80%
发文量
1470
审稿时长
1.7 months
期刊介绍: ACS Sustainable Chemistry & Engineering is a prestigious weekly peer-reviewed scientific journal published by the American Chemical Society. Dedicated to advancing the principles of green chemistry and green engineering, it covers a wide array of research topics including green chemistry, green engineering, biomass, alternative energy, and life cycle assessment. The journal welcomes submissions in various formats, including Letters, Articles, Features, and Perspectives (Reviews), that address the challenges of sustainability in the chemical enterprise and contribute to the advancement of sustainable practices. Join us in shaping the future of sustainable chemistry and engineering.
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