Biobased long chain thermoplastic polyamide elastomers(TPAEs)have garnered extensive attention from both academia and industry in recent years.In this paper,polyetheramine(PEA)and biobased long chain polyamide 1210(LCPA 1210)were used to prepare PEA-type biobased LCPA 1210 elastomer(TPAE 1210).The prepared TPAE 1210 exhibits high molecular weight and narrow distribution,with mechanical properties comparable to commercial products.It primarily forms an α-crystalline structure,and the regularity of polyamide chain structure within certain crystalline regions is significantly influenced by PEA,resulting in secondary crystallization behavior during heating.Non-isothermal crystallization kinetics of TPAE 1210 were investigated by differential scanning calorimetry.The results indicate that TPAE 1210 primarily undergoes one-dimensional growth through heterogeneous nucleation during the primary crystallization and transitions to two-dimensional growth in the secondary crystallization.The crystallization activation energy of TPAE 1210,calculated by Kissinger method,is determined to be-144.4 kJ/mol.
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