呋喃基聚酯的结构与性能关系研究进展

呋喃基聚酯是指以2,5-呋喃二甲酸(FDCA)为主要单体合成的生物基或部分生物基高分子,其主链含有刚性的呋喃环,因而在结构、性能上与大规模使用的传统石油基芳香族聚酯(如PET、PBT)相似,有望在瓶、片、薄膜、化纤等领域部分替代后者。本文综述了呋喃基聚酯的分子结构、聚集态结构以及力学、气体阻隔、降解等性能方面的最新研究进展,讨论了结构与性能之间的关系。重点关注呋喃基聚酯突出的阻隔性能及其对应的影响因素,主要从分子结构(呋喃环的非对称性和极性)和聚集态结构(结晶等)两方面加以阐明。简介了呋喃基聚酯的发展现状及其在包装、纺织等领域的潜在应用,并展望其主要研究趋势。

Advances in Relationship between Structure and Properties of Furan-based Polyesters

Furan-based polyesters represent a family of fully or partially bio-based polymers synthesized with 2,5-furandicarboxylic acid (FDCA) as the major monomer.Since the furan ring is rigid,the furan-based polyesters are highly comparable in structure and performance with the traditional fossil-based aromatic polyesters (e.g.,PET and PBT) which have been used in a large scale.It is thus potential to replace the traditional aromatic polyesters with the furan-based polyesters at least partially in bottles,sheets,films,fibers,etc.This paper reviews recent advances in the research on the furan-based polyesters,including the molecular structure,state of aggregation,mechanical,gas-harrier and degradationproperties,as well as the relationship between them.Focus is on the outstanding gas-barrier performance of the furanbased polyesters and the relevant governing factors including the molecular structure (the asymmetric geometry and polarity of the furan ring) and the state of aggregation (such as crystallization).A brief introduction is also made on the state-of-the-art and potential applications of the furan-based polyesters in packages and textiles and an outlook is given in the research trend.