Synthesis of Graphene Oxide-Polystyrene Graft Polymer Based on Reversible Addition Fragmentation Chain Transfer and Its Effect on Properties, Crystallization, and Rheological Behavior of Poly (Lactic Acid)

Table 5

Enthalpy and temperature of PLA0 and PLA2 at different isothermal crystallization time.

Isothermal crystallization time/(min)	PLA0					PLA2
	ΔHM1/(J/g)	ΔHM2/(J/g)	ΔHM2/ΔHM1	M1/(^oC)	M2/(^oC)	ΔHM1/(J/g)	ΔHM2/(J/g)	ΔHM2/ΔHM1	M1/(^oC)	M2/(^oC)
15	3.20	6.74	2.10	168.92	163.00	3.14	6.81	2.16	169.09	162.51
30	3.12	6.81	2.18	168.90	163.1	3.04	6.89	2.26	169.09	162.83
45	2.92	6.86	2.35	168.68	163.17	2.90	7.10	2.45	169.09	163.00
60	2.74	7.14	2.60	168.60	163.18	2.65	7.13	2.69	168.92	163.49