Chitin Nanofibril-Based Flame Retardant for Paper Application

Chitin nanofibril-based flame retardant was developed by disintergrating chitin by ball-mill followed by phosphorylation with P2O5. Chitin nanofibril-based flame retardant with DSphos of 0.090 showed high flame retardancy and applied it to paper. The effect of the amount of flame retardant on the fire resistancy on paper was studied, ans the results were as following: the termal ability of paper was enhanced with increasing amount of chitin nanofibril-based flame retardant, the char yield was increased from 14 wt% of control paper to 37 wt%, the LOI was increased to 30%, the peak heat release rate was reduced 62%, the tensile strength of paper loaded chitin nanofibril-base flame retardant gave an improvement of 47%.