《Table 2 Isothermal crystallization kinetic parameters of PBC and PBAC samples at different Tc\n\t

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《"Isothermal Crystallization Kinetics and Crystalline Morphologies of Poly(butylene adipate-co-butylene 1,4-cyclohexanedicarboxylate) Copolymers"》

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a n is Avrami exponent，k is crystallization rate constant，t0.5 and t1/2 are respectively observed and calculated crystallization time when theχt is 50%，τ1/2 is the reciprocal of t1/2 andΔE is the crystallization activation energy.

The compositions and basic thermal properties of PBC and the four PBAC copolymers studied in this work（Scheme 1），adopted from our previous study[38]，are listed in Table 1.The compositions are calculated according to 1H-NMR.The Tm and Tc were obtained from the second heating and cooling scans，respectively，from regular DSC analysis.Detailed information can be found in our previous work[38].Generally，with the increase of BA unit molar percentage in the PBAC copolymers from 7%to 51%，both Tm and Tc decrease gradually.The pure PBC polymer has both higher Tm and Tc than PBAC copolymers.In addition，all samples have similar amounts of trans-CHDA molar percent ranging from 80%to 90%.