Sustainable modification of polyamide 6 fabric by Maillard reaction product for mitigating fire hazards and molten-dripping. (July 2022)

• Record Type: Journal Article
• Authors: Jin, Wen-Jie; Cheng, Xian-Wei; He, Wei-Lin; Chen, Wei; Guan, Jin-Ping; Qian, Qin-Fang; Xu, Jin-Long
• Is Part Of: Polymer testing. Volume 111(2022)
• Publication Date: 2022-07
• Subjects: Polyamide 6 -- Fire hazards -- Anti-dripping -- Maillard -- Washing durability; PA6 polyamide 6 -- FR flame retardant -- MRP Maillard reaction product -- GAS guanidine sulfamate -- AS ammonium sulfamate -- THU thiourea -- FT-IR Fourier transform infrared spectroscopy -- NMR nuclear magnetic resonance -- SEM scanning electron microscopy -- EDS energy dispersive spectroscopy -- XPS X-ray photoelectron spectroscopy -- PCFC pyrolysis combustion flow calorimetry -- HRR heat release rate -- pHRR peak heat release rate -- THR total heat release -- HRC heat release capacity -- LOI limiting oxygen index; Polymers -- Testing -- Periodicals; Polymères -- Tests -- Périodiques; 620.1920287
• DOI: 10.1016/j.polymertesting.2022.107595
• Languages: English
• ISSNs: 0142-9418

Abstract

Abstract: Developing durable and sustainable flame retardant (FR) polyamide 6 (PA6) fabric is of great interest. Herein, an eco-friendly Maillard reaction product (MRP) was developed by carbonyl-amino condensation between glucose and thiourea. Then, the functional PA6 fabric was developed through an exhaustion process. We further explored the anti-dripping ability, flame retardancy and washing durability, FR mechanism and physical properties of MRP-modified PA6 fabric. The modified PA6 fabric possessed a high LOI of 31.6% and a low damaged length of 11.3 cm without dripping action. The smoke emission was also reduced by 38.2% after MRP modification, although the Caramel skeleton exerted a scaffold effect with PA6. The MRP macromolecule inhibited PA6 flammability through gas-phase FR mechanism. In addition, the MRP macromolecule could firmly adsorb on PA6 fabric, corresponding to superior washing durability, and the V-0 rate was also reached after 40 washings. The modified PA6 fabric also had a yellowish-brown color and improved tensile strength. Graphical abstract: Image 1 Highlights: Glucose and thiourea are derived from multiple plants or microorganisms. Maillard reaction product (MRP) is a carbohydrate compound with good adhesion ability. MRP macromolecule displays high flame retardant efficiency through gas-phase mechanism. MRP macromolecule offers a sustainable and durable strategy to minimize the fire hazards of polyamide 6 textiles.