Bio-based semi aromatic high temperature polyamide PA5T/56 was synthesized by one-step high temperature and high pressure solution polymerization with bio-based monomer pentanediamine. The non-isothermal crystallization behavior of PA5T/56 was studied by differential scanning calorimetry (DSC). Mo equation was used to describe the non-isothermal crystallization kinetics. The activation energy of non-isothermal crystallization was calculated by Kissinger equation. The effect of benzene ring (T) molar content on the non-isothermal crystallization kinetics was investigated. The crystal morphology was observed by optical polarized microscope (POM) and X-ray diffraction (XRD). The results showed that the non-isothermal crystallization activation energy and absolute crystallinity of nylon 5 T/56 first increased and then decreased with the increased of T molar content from 25% to 32.5%. At the same time, the crystal form of polyamide didn’t change. When the molar content of T was 30%, the number of spherulites was the largest, the size was the smallest, the crystallization rate was the fastest, and the crystallization ability was the highest, which indicated that T can play a role in promoting crystallization in polymer molecular chain.

以生物基单体戊二胺为原料，通过一步法高温高压溶液聚合合成了生物基半芳族高温聚酰胺PA5T/56。通过差示扫描量热法 (DSC) 研究了 PA5T/56 的非等温结晶行为。Mo方程用于描述非等温结晶动力学。非等温结晶的活化能由 Kissinger 方程计算。研究了苯环 (T) 摩尔含量对非等温结晶动力学的影响。通过光学偏光显微镜（POM）和X射线衍射（XRD）观察晶体形貌。结果表明，随着T摩尔含量从25%增加到32.5%，尼龙5T/56的非等温结晶活化能和绝对结晶度先升高后降低。同时，聚酰胺的晶型没有变化。当T摩尔含量为30%时，球晶数量最多，尺寸最小，结晶速度最快，结晶能力最高，说明T能起到促进结晶作用在聚合物分子链中。