生物基长链聚酰胺1210弹性体的制备、性能与非等温结晶动力学  

Preparation,Properties and Non-Isothermal Crystallization Kinetics of Biobased Long Chain Polyamide 1210 Elastomers

作　　者：陈向阳 龚舜 周阳 赵彪 潘凯[1] Xiangyang Chen;Shun Gong;Yang Zhou;Biao Zhao;Kai Pan(College of Materials Science and Engineering,Beijing University of Chemical Technology,Beijing 100029,China)

机构地区：[1]北京化工大学材料科学与工程学院,北京100029

出　　处：《高分子材料科学与工程》2024年第10期21-28,共8页Polymer Materials Science & Engineering

基　　金：中石油石化院重大攻关项目(PRXKY23093)。

摘　　要：生物基长链热塑性聚酰胺弹性体(TPAE)近年来引起了学术界和工业界的广泛关注。文中以聚醚胺与生物基长链聚酰胺1210分别作为软硬段,成功制备得到了聚醚胺型生物基长链聚酰胺1210弹性体(TPAE 1210),其具有高的相对分子质量和窄的分布度,力学性能媲美同类商品。TPAE 1210弹性体主要形成α晶型,且聚醚胺对晶区内的链结构规整性有较大影响,导致加热过程中出现二次结晶行为。利用差示扫描量热法研究了TPAE 1210的非等温结晶动力学过程,结果表明,其初级结晶过程主要通过异相成核进行一维生长,二次结晶过程主要进行二维生长。采用Kissinger法计算得TPAE 1210的结晶活化能为-144.4 kJ/mol。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 anα-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.

关 键 词：生物基 长链聚酰胺 热塑性弹性体 非等温结晶 

分 类 号：TQ334[化学工程—橡胶工业]