The Study of Properties and Structure of Polylactide–Graphite Nanoplates Compositions

Table 1

DSC parameters of thermal transitions observed in PLA composites.

Sample	Heating	(^oC)	Tcc (^oC)	Tm (^oC)	ΔHcc (J/g)	ΔHm (J/g)	Degree of crystallinity, χ (%)
PLA	First	—	—	163.2	—	−30.8	30.8
	Second	61.3	—	158	—	−0.6	0.65
PLA/GNP, 1 wt%	First	56.5	−—	162.4	−—	−31.8	32.2
	Second	61.6	128.6	159.0	7.1	−10.9	4.0
PLA/GNP, 5 wt%	First	64.6	111.0	162.8	5.8	−31.6	27.7
	Second	61.1	127.1	158.5	16.5	−23.4	7.8
PLA/GNP, 10 wt%	First	—	—	162	—	−31.7	32.1
	Second	62	121.3	157/162	25.5	−32.2	3.9
PLA/GNP, 15 wt%	First	—	—	162.6	—	−40.5	43.3
	Second	61.2	126.5	158/162	22.9	−26	5.5
PLA/GNP, 20 wt%	First	—	—	163.5	−	−42.1	45.0
	Second	61.7	124.5	160/163	19.6	−29.1	10.1

PLA, poly(lactic acid); GNP, graphite nanoplates.