广东工业大学学报2026，Vol.43Issue(1)：123-129,7.DOI:10.12052/gdutxb.250122
奇偶PA5X晶体的制备及其性能表征
Preparation of Odd-couple PA5X Crystals and Characterization of Their Properties
摘要
Abstract
This study employed bulk melt polycondensation to synthesize a series of odd-even polyamide PA5X(X=6,8,10,12,14)materials using bio-based 1,5-pentanediamine and dicarboxylic acids of varying chain lengths as monomers.The effects of dicarboxylic acid chain length on the condensed-phase structure and properties of these materials were systematically investigated.The study revealed that increasing the carbon chain length X of the dicarboxylic acid enhances the molecular chain conformation mobility of PA5X,facilitating crystallization and the formation of more complex single-crystal morphologies.Concurrently,the strength of single-crystal hydrogen bonds also increases with X.In dilute solutions,longer-chain PA5X readily forms highly ordered monoclinic α-crystals(independent of solvent).Performance studies indicate that the water absorption rates of PA56 and PA58 significantly increase over time,reaching 2.41%and 1.53%respectively after 30 days.In contrast,the water absorption rates of longer-chain polyamides such as PA510,PA512,and PA514 show smaller increases.It is hoped that the above research will provide theoretical support for the development of high-performance polyamides.关键词
生物基聚酰胺/PA5X/奇偶聚酰胺/结晶形貌/晶体结构/链运动能力Key words
bio-based polyamide/PA5X/parity polyamide/crystalline morphology/crystal structure/chain motility分类
信息技术与安全科学引用本文复制引用
徐岳帅,吴明辉,许蕴琪,陈万丁,郑治坤,陈旭东,杨克俭..奇偶PA5X晶体的制备及其性能表征[J].广东工业大学学报,2026,43(1):123-129,7.基金项目
国家重点研发计划项目(2023YFB3812400) （2023YFB3812400）
