Anti-Ultraviolet Biobased Polyesters Synthesized by Acyclic Diene Metathesis Polymerization,Macromolecules

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Anti-Ultraviolet Biobased Polyesters Synthesized by Acyclic Diene Metathesis Polymerization
Macromolecules ( IF 5.1 ) Pub Date : 2024-06-11 , DOI: 10.1021/acs.macromol.4c00593
Qiubo Wang ₁ , Xinyu Hu ₁ , Shuyao Wang ₁ , Xiaojuan Liao ₁ , Ruyi Sun ₁ , Qiancai Liu ₁ , Meiran Xie ₁

Affiliation

Synthesis of copolymers using 2,5-furandicarboxylic acid (FDCA) and isosorbide (IS) as renewable feedstocks remains a challenge in conventional melt polycondensation. Herein, acyclic diene metathesis (ADMET) polymerization of several kinds of α,ω-dienes containing an FDCA or IS moiety was performed under mild conditions to afford biobased polyesters with an unsaturated chain structure and tunable glass transition temperature between −40 and 34 °C. Meanwhile, FDCA-derived α,ω-diene was used as a comonomer to undergo inverse vulcanization with elemental sulfur, affording a polysulfide as the cross-linking agent suitable for modifying ADMET polyesters. The cross-linked polyesters showed improved mechanical properties and good reprocessability. Furthermore, the modified polyester composites exhibited excellent anti-ultraviolet (UV) performance with a high UV protection factor of 251 and maintained almost the original mechanical properties even after 72 h of UV light exposure. This work provided a practical approach for the high-value-added utilization of ADMET polyesters as sustainable functional materials.

中文翻译：

无环二烯复分解聚合合成抗紫外线生物基聚酯

使用 2,5-呋喃二甲酸 (FDCA) 和异山梨醇 (IS) 作为可再生原料合成共聚物仍然是传统熔融缩聚中的一个挑战。在此，在温和的条件下进行几种含有FDCA或IS部分的α,ω-二烯的无环二烯复分解（ADMET）聚合，得到具有不饱和链结构和在-40至34℃之间可调玻璃化转变温度的生物基聚酯。同时，FDCA衍生的α,ω-二烯被用作共聚单体，与元素硫进行反硫化，得到多硫化物作为适用于ADMET聚酯改性的交联剂。交联聚酯表现出改善的机械性能和良好的可再加工性。此外，改性聚酯复合材料表现出优异的抗紫外线（UV）性能，紫外线防护系数高达251，即使在紫外线照射72小时后仍几乎保持原有的机械性能。这项工作为 ADMET 聚酯作为可持续功能材料的高附加值利用提供了实用方法。

更新日期：2024-06-11

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