Journal of Polymers

Research Article

Preparation and Characterization of Talc Filled Thermoplastic Polyurethane/Polypropylene Blends

Table 3

Results of TGA measurement for the neat TPU, PP, TPU/T and PP/T composites, and unfilled and talc filled TPU/PP blends.


Sample	(°C)	(°C)	(%)	(°C)	(°C)	(%)	(°C)	(°C)	(%)	(°C)	Residue at 700°C (%)

TPU 100/0	288.1	328.8	62.3	357.6	369.8	30.2	—	—	—	400.4	0.7
TPU/T 100/5	295.6	331.1	34.3	348.2	380.0	53.4	425.4	441.3	6.5	458.4	4.9
PP 100/0	312.3	423.9	99.7	—	—	—	—	—	—	437.7	0.3
PP 100/5	330.7	435.5	96.4	—	—	—	—	—	—	455.5	3.2
80/20	299.6	337.2	44.1	352.2	368.9	51.7	—	—	10.4	—	2.8
80/5/20	300.0	337.8	33.0	347.2	378.3	45.9	421.2	430.4	15.2	451.5	5.0
50/50	301.7	318.7	18.3	347.5	388.7	39.4	413.2	439.5	40.4	454.6	1.4
50/5/50	305.1	319.3	18.9	349.6	398.0	34.1	411.0	442.5	43.4	458.9	3.3
20/80	318.2	319.09	8.6	—	—	—	346.8	440.6	90.6	458.9	0.7
20/5/80	319.5	319.08	7.7	—	—	—	335.2	442.1	89.7	457.5	2.4

: temperature at which 5% weight loss occurs from the TG curve; , temperature of maximum rate of decomposition for the 1st, 2nd, and 3rd steps of degradation, respectively, from the DTG curve; : mass loss on the end of the 1st, 2nd, and 3rd steps of degradation; : temperature of initial decomposition for the 2nd and 3rd steps of degradation; : final degradation temperature.