Effect of Injection Molding Melt Temperatures on PLGA Craniofacial Plate Properties during In Vitro Degradation

Table 3

Degree of crystallinity () and thermal properties measured by DSC: glass-transition temperature (), melting point (), enthalpy of cold crystallization (), enthalpy of glass (), and enthalpy of melting () ().

		[°C]	[°C]	[°C]	[°C]	[J/g]	[J/g]	[J/g]	[%]
	Pellet	60.4 ± 1.8	—	146.1 ± 0.1	—	—	33.4 ± 2.4	1.7 ± 0.4	35.7
PLGA_lowT	0 days	56.0 ± 0.5	153.1 ± 0.3	156.6 ± 0.2	130.7 ± 2.4	−2.3 ± 0.6	4.3 ± 1.5	5.1 ± 0.5	7.1
	15 days	53.0 ± 3.2	153.8 ± 2.2	157.5 ± 1.8	131.0 ± 0.1	−8.9 ± 2.2	5.0 ± 2.6	5.9 ± 1.3	14.8
	30 days	51.8 ± 1.2	153.6 ± 0.9	156.4 ± 1.0	99.9 ± 7.7	−17.5 ± 3.1	14.5 ± 6.9	9.6 ± 4.0	34.1
	60 days	48.3 ± 0.3	138.7 ± 4.2	147.3 ± 5.4	87.4 ± 4.1	−35.3 ± 7.8	28.6 ± 6.8	7.1 ± 12.0	68.2
	120 days	41.7 ± 6.6	120.4 ± 0.2	133.5 ± 1.0	95.5 ± 0.1	−30.2 ± 0.9	19.7 ± 8.7	14.1 ± 3.8	53.3
PLGA_highT	0 days	52.7 ± 0.9	151.0 ± 2.2	157.9 ± 1.0	124.5 ± 4.2	−24.0 ± 8.1	17.9 ± 5.1	3.1 ± 0.3	44.7
	15 days	52.5 ± 3.1	154.1 ± 0.1	157.2 ± 2.0	127.1 ± 14.5	−9.9 ± 4.3	7.9 ± 3.0	9.1 ± 0.4	19.0
	30 days	52.6 ± 0.8	152.0 ± 0.1	156.6 ± 0.4	102.1 ± 8.3	−68.6 ± 3.6	19.1 ± 7.1	10.5 ± 0.5	93.7
	60 days	52.0 ± 1.1	153.7 ± 0.7	157.7 ± 1.7	89.0 ± 3.9	−47.9 ± 2.2	7.9 ± 7.0	11.8 ± 6.5	59.6
	120 days	41.6 ± 0.8	144.4 ± 2.8	152.4 ± 3.2	96.6 ± 1.3	−28.9 ± 6.9	23.2 ± 4.1	0.4 ± 0.1	55.7