Preparation of multifunctional polyester cotton blended fabric integrating flame retardancy and antibacterial properties
In this study,a P/N synthesized flame retardant,POC,was prepared by reacting collagen with phosphenylic acid(PPOA),and used to improve the flame retardancy of polyester cotton blended fabrics(PTCO)by the dip‒drying method.A de-tailed study was conducted on the microstructure,thermal stabil-ity,flame retardancy,combustion behavior,mechanical proper-ties,antibacterial properties,and flame‒retardant mechanism of finished PTCO.The scanning electron microscope images indi-cated that POC was uniformly deposited on the surface of PTCO.The Rmax of PTCO/POC under air atmosphere decreased by 20.3%,and the char residues at 700℃increased from 0.6%to 3.3%.PTCO/POC can self‒extinguish,with an afterflame time and afterglow time of 0 s,a damaged length of 7.8 cm,and an LOI value of 28.2%.In cone calorimeter test,the time to ignition was extended from 26 s to 35 s,and the peak heat release rate and total heat release values were decreased by 33.8%and 23.6%,respectively.In addition,the breaking force of PTCO/POC was increased from 725 N of PTCO/PPOA to 810 N,re-maining 88.1%of the breaking force compared with that of PTCO.The antibacterial rates of PTCO/POC against Esch-erichia coli and Staphylococcus aureus both reached 99.99%.In summary,PTCO/POC owned better flame retardancy and anti-bacterial properties.
NETL
NSTL
万方数据
