Preparation of GMA modified adenosine phosphates and their application to flame retardant finishing of cotton fabric
Three flame retardant monomers AMP-m-GMA,ADP-m-GMA and ATP-m-GMA with unsaturated double bond were synthesized from modification of adenosine monophosphate(AMP),adenosine diphosphate(ADP)and adenosine triphosphate(ATP)with glycyl methacrylate(GMA),which were subsequently grafted onto cotton fabric via UV photografting to obtain photografted flame retardant cotton fabrics with AMP-m-GMA,ADP-m-GMA and ATP-m-GMA,respectively.The three flame retardant monomers were characterized for analysis on structure and thermal stability,followed by investigation on the thermal stability,flame retardant performance,combustion behavior and structure of residual carbon of three photografted flame retardant cotton fabrics.The results showed that unsaturated double bonds were introduced onto three adenosine phosphate monomers,which displayed good thermal stability,through ring-opening reaction of epoxy group of GMA.Compared with those of pristine cotton fabric,the maximum thermal degradation rate of the three flame-retardant cotton fabrics were decreased by 60.0%,52.0%and 60.0%,the limit oxygen index increased from 16.1%to 25.4%,27.4%and 26.4%,and the heat release rate of the fabrics decreased by 15.09%,60.47%,37.82%,respectively.These results indicated that three flame retardant adenosine phosphate monomers could help cotton fabric form dense carbon layer,prevent heat diffusion,and obtain good flame retardant effect.Among the three photografted flame retardant cotton fabrics,ADP-m-GMA flame retardant cotton fabric showed weight gain rate of 22.4%and damage length after burning reduced to 14.2 cm,demonstrating better flame retardancy.
adenosine phosphatesglycidyl methacrylatestructural characterizationflame retardant performancedyeing and finishing auxiliaries
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NSTL
万方数据
维普
