Ma Sheng-Nan, Guan Jin-Ping, Cheng Xian-Wei, Chen Guoqiang, Guo Wei-Hua
Key Laboratory of Flame Retardancy Finishing of Textile Materials (CNTAC), College of Textile and Clothing Engineering, Soochow University, 199 Ren'ai Road, Suzhou 215123, China.
Key Laboratory of Flame Retardancy Finishing of Textile Materials (CNTAC), College of Textile and Clothing Engineering, Soochow University, 199 Ren'ai Road, Suzhou 215123, China.
Int J Biol Macromol. 2024 Nov;280(Pt 4):136142. doi: 10.1016/j.ijbiomac.2024.136142. Epub 2024 Sep 28.
The development of halogen- and phosphorus-free flame-retardant strategies is urgently needed in textile industry. In this study, a caramel product doped with aromatic compounds was developed via caramelization and aldol reactions using glucose and p-phthaldialdehyde. The modified caramel (Car@PDA) was subsequently used as a sustainable approach to improve flame retardancy of wool fabric. The flame retardancy, washing durability, heat generation, and flame-retardant mode of action of Car@PDA on wool fabric were investigated. The modified wool fabrics showed excellent flame retardancy, with the limiting oxygen index increasing to 32.5 % and the damaged length decreasing to 10.1 cm, with good self-extinguishing capacity. Car@PDA could combine with wool fibers through Schiff base reaction and electrostatic attraction, so the modified wool fabrics still self-extinguished and met the B1 flame-retardant requirements after 10 washing cycles. The modified wool showed significantly decreased heat release capacity and fire growth rate, suggesting high fire safety. Car@PDA promoted the decomposition of the fabric to form char barrier, thereby achieving an effective flame-retardant effect. In addition, the Car@PDA modification had a minimal effect on the tensile strength and handle of wool fabric. This study provides an innovative way to create bio-based, halogen- and phosphorus-free flame-retardants for protein wool fabrics.
纺织工业迫切需要开发无卤和无磷的阻燃策略。在本研究中，通过使用葡萄糖和对苯二甲醛的焦糖化反应和羟醛反应，制备了一种掺杂芳香族化合物的焦糖产品。随后，改性焦糖（Car@PDA）被用作提高羊毛织物阻燃性的可持续方法。研究了Car@PDA对羊毛织物的阻燃性、洗涤耐久性、发热性能及阻燃作用方式。改性羊毛织物表现出优异的阻燃性，极限氧指数提高到32.5%，损毁长度降至10.1 cm，具有良好的自熄能力。Car@PDA可通过席夫碱反应和静电引力与羊毛纤维结合，因此改性羊毛织物在经过10次洗涤循环后仍能自熄并满足B1级阻燃要求。改性羊毛的热释放能力和火灾增长速率显著降低，表明具有较高的消防安全性能。Car@PDA促进织物分解形成炭质屏障，从而实现有效的阻燃效果。此外，Car@PDA改性对羊毛织物的拉伸强度和手感影响极小。本研究为制备用于蛋白质羊毛织物的生物基、无卤和无磷阻燃剂提供了一种创新方法。
