Synthesis and Characterizations of Poly(trimethylene terephthalate)-b-poly(tetramethylene glycol) Copolymers

Table 4

Parameters of the TGA curves for the various samples.

PTT/PTMEG; (wt%/wt%)	𝑇2%; (°C)	𝑇5%; (°C)	𝑇max; (°C)	𝑊600^∘C; (%)	𝜂0^∗; (Pa·s)	𝜎𝑡^a; (MPa)	𝜀𝑏^b; (%)	𝜎𝑖^c; (KJ·m^−2)	𝐻^d; (Sh D)
C0-100/0	343.8	369.0	406.5	0.69	345.1	30.4	33.3	7.6	76
C1-83/17	345.8	367.9	409.9	0.75	230.2	11.4	249.1	16.5	58
C2-66/34	324.3	362.4	408.0	0.83	168.8	8.7	398.6	28.8	41
C3-40/60	274.8	351.3	408.0	0.26	111.5	5.8	589.1	47.2	26

aTensile strength.
^bElongation at breaking point.
^cImpact strength.
^dShore hardness.