Liu Lei, He Lei, Jin Liping, Shi Haojie, Ye Shuhan, He Lingxin, Wang Wei, Guo Wenwen
Key Laboratory of Eco-textiles, Ministry of Education, College of Textile Science and Engineering, Jiangnan University, 1800 Lihu Avenue, Wuxi, Jiangsu 214122, China.
State Grid Anhui Electric Power Research Institute, Hefei 230601, China.
Int J Biol Macromol. 2025 Apr;301:140344. doi: 10.1016/j.ijbiomac.2025.140344. Epub 2025 Jan 29.
To obtain cotton fabrics with high-efficiency flame retardancy, a novel nanohybrid MXene modified with phosphorylated chitosan (CS) was successfully prepared through a simple chemical modification strategy. It was subsequently employed in the fabrication of PC@T-MXene-functionalized cotton fabric (PC@T-MXene-C) through an impregnation process. The thermal stability and flame retardancy of the pure and treated cotton textiles were analyzed via TGA, LOI, VBT flammability tests and cone calorimetry. Compared with those of the original cotton textile and PCS-decorated cotton fabric (PC-C), the thermal and flame-retardant performance of PC@T-MXene-C was significantly enhanced. When the weight gain of the treated cotton fabric was 12 % (PC@T-MXene-C3), the LOI of PC@T-MXene-C3 significantly reached 35 %, and the peak heat release rate (PHRR) and total heat release (THR) decreased by 80.7 % and 43.7 %, respectively, compared with those of the original cotton textile. Additionally, PC@T-MXene-C3 retained 39.1 % of the char residual at high temperature under a nitrogen atmosphere in the TGA analysis. This eco-friendly biomass-based flame-retardant coating provides a new strategy for fabricating green flame-retardant systems without the use of hazardous compounds.
为了获得具有高效阻燃性的棉织物，通过一种简单的化学改性策略成功制备了一种用磷酸化壳聚糖（CS）改性的新型纳米杂化MXene。随后，通过浸渍工艺将其用于制备PC@T-MXene功能化棉织物（PC@T-MXene-C）。通过热重分析（TGA）、极限氧指数（LOI）、垂直燃烧试验（VBT）和锥形量热法对纯棉织物和处理后的棉织物的热稳定性和阻燃性进行了分析。与原始棉织物和PCS修饰的棉织物（PC-C）相比，PC@T-MXene-C的热性能和阻燃性能显著提高。当处理后的棉织物增重12%（PC@T-MXene-C3）时，PC@T-MXene-C3的极限氧指数显著达到35%，与原始棉织物相比，峰值热释放速率（PHRR）和总热释放（THR）分别降低了8０.7%和43.7%。此外，在TGA分析中，PC@T-MXene-C3在氮气气氛下高温时保留了３9.1%的残炭。这种基于生物质的环保型阻燃涂层为制备不使用有害化合物的绿色阻燃体系提供了一种新策略。
