id	keyword
brj-24478	et al
brj-24478	flame
brj-24478	retardant
brj-24478	paper
brj-24478	doi
brj-24478	lignin
brj-24478	sample
brj-24478	char
brj-24478	acid
brj-24478	lps
brj-24478	silica
brj-24478	fig
brj-24478	test
brj-24478	flammability
brj-24478	article