Table 4.

TGA and DTG results of unmodified and fire retarded flax/PP and flax/PLA composites in air.

FR Treatment	Flax/PP					Flax/PLA
	Mass Loss Stages			DTG Maxima (°C)	Char at 700 °C (%)	Mass Loss Stages			DTG Maxima (°C)	Char at 700 °C (%)
	Stage	Temp Range (°C)	Mass Loss (%)			Stage	Temp Range (°C)	Mass Loss (%)
-	I	219 *–380	87.8	341	0.3	I	252 *–388	91.1	358	0.8
	II	380–395	10.0	391		II	388–440	6.3	436
AS	I	194 *–293	23.8	239	2.9	I	201 *–290	29.6	240	3.9
	II	293–385	48.6	368		II	290–412	40.6	356
	III	385–589	22.4	497 s		III	412–565	22.2	463 s
AB	I	209 *–241	13.1	225	0.8	I	206 *–246	21.0	225	1.1
	II	241–412	64.2	384		II	246–405	55.4	349
	III	412–601	18.7	471 s		III	405–590	18.5	458 (s)
GDP	I	200 *–276	22.2	261	5.1	I	199 *–290	21.5	273	7.6
	II	276–376	43.0	344		II	290–392	47.7	366
	III	376–633	26.1	537 s		III	392–614	20.9	467 s
GUP	I	186 *–299	44.4	256	3.1	I	192 *–310	36.2	286	4.6
	II	299–381	19.8	324		II	310–393	35.1	351
	III	381–630	29.9	557 s		III	393–623	21.3	475 s

Note: * = Onset of decomposition temperature. There is small mass loss (~3%) from room temperature (RT) to the onset of decomposition temperature, corresponding to the volatilisation of moisture in the samples. s = represents small peak.