Polymers based on the furanic compounds derived from renewable carbohydrates have seen massive growth due to their unique properties and increasing concerns about sustainability and environmental challenges. In this study, fully bio-based four new linear ion-exchange polyamides were synthesized by interfacial polymerization of bisfuran diamine monomer (BFN). The BFN monomer is prepared by condensing 2-aminomethyl furan with levulinic acid using an acid catalyst. The bisfuran polyamides are generally considered hydrophilic, with an observed swelling capacity range from 108 to 192%. The ion exchange capacity range was observed from 2.19 to 2.35. The thermal properties of the bisfuran polyamides were studied with differential scanning calorimetry and thermal gravimetric analysis. The glass transition values were ranged from 162.2 to 122.1 °C, and the 1% mass loss at temperatures was above 215 °C. An X-ray diffraction study proves amorphous nature with some degree of crystallinity at θ = 20°.

Graphical Abstract

中文翻译：

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双呋喃二胺单体与可持续二羧酸衍生物的界面缩聚制备新型生物基离子交换双呋喃聚酰胺的合成与表征

基于源自可再生碳水化合物的呋喃化合物的聚合物由于其独特的特性以及对可持续性和环境挑战的日益关注而出现了巨大的增长。本研究通过双呋喃二胺单体（BFN）的界面聚合合成了全生物基的四种新型线性离子交换聚酰胺。BFN 单体是通过使用酸催化剂使 2-氨基甲基呋喃与乙酰丙酸缩合制备的。双呋喃聚酰胺通常被认为是亲水性的，观察到的溶胀能力范围为 108% 至 192%。观察到离子交换容量范围为 2.19 至 2.35。采用差示扫描量热法和热重分析法研究了双呋喃聚酰胺的热性能。玻璃化转变值范围为 162.2 至 122.1 °C，在 215 °C 以上的温度下 1% 的质量损失。X 射线衍射研究证明在 θ = 20° 时具有一定程度的结晶度的无定形性质。

图形概要