Simple Method for the Preparation of Composites Based on PA6 and Partially Exfoliated Graphite

Table 1

Characteristics of the sample prepared.

Sample code	Initial graphite concentration in CL (wt.-%)	Remaining graphite concentration in CL (wt.-%)	𝑀𝑤⋅10^−3a	𝑇𝑔 (°C)	𝑥^𝑏𝑐 (%)	𝑇𝑐 (°C)	𝑇𝑚 (°C)
PA6	—	—	30	50	45	196	218
PA6(1.0)	1.0	0.1	29	50	44	195	218
PA6(0.5)	0.5	0.06	28	49	45	196	219
PA6(0.2)	0.2	0.02	30	51	46	196	218

Glass transition temperature (𝑇_𝑔), melting temperature (𝑇_𝑚), crystallization temperature (𝑇_𝑐), and degree of crystallinity (𝑥_𝑐) were determined from the second scan.
^a𝑀_𝑤 was calculated by the following equation: [𝜂]=0,51⋅10⁻³𝑀^𝑤0.74 [18] by measuring [η] in H₂SO₄ at 20°C.