四川大学朱剑波等研究人员合作开发出完全可回收的生物基高性能芳香族脂肪族聚酯。相关论文于2021年11月29日在线发表于国际学术期刊《美国化学会杂志》。

研究人员设计了一系列含有芳香族和脂肪族基团的生物基七元环酯。开环聚合研究表明，它们在室温下很容易聚合，具有很好的活性（TOF高达2.1×10⁵ h^-1），并产生高分子量的聚合物（M_n高达438 kg/mol）。各种功能使得研究人员能够研究取代对单体的可聚合性/可回收性和聚合物性能（如T_gs从-1到79℃）的影响。

值得注意的是，一个立体复合的P(M2)表现出明显的T_m和结晶率的增加。更重要的是，产物P(M)能够在溶液或散装中高效地解聚成它们的单体，从而建立了它们的循环生命周期。

据悉，开发高性能的可回收聚合物代表了一种循环塑料经济，有望解决塑料可持续性的紧迫问题。

附：英文原文

Title: Biobased High-Performance Aromatic–Aliphatic Polyesters with Complete Recyclability

Author: Yi-Min Tu, Xue-Mei Wang, Xing Yang, Hua-Zhong Fan, Fu-Long Gong, Zhongzheng Cai, Jian-Bo Zhu

Issue&Volume: November 29, 2021

Abstract: The development of high-performance recyclable polymers represents a circular plastics economy to address the urgent issues of plastic sustainability. Herein, we design a series of biobased seven-membered-ring esters containing aromatic and aliphatic moieties. Ring-opening polymerization studies showed that they readily polymerize with excellent activity (TOF up to 2.1 × 105 h–1) at room temperature and produce polymers with high molecular weight (Mn up to 438 kg/mol). The variety of functionalities allows us to investigate the substitution effect on polymerizability/recyclability of monomers and properties of polymers (such as Tgs from 1 to 79 °C). Remarkably, a stereocomplexed P(M2) exhibited significantly increased Tm and crystallization rate. More importantly, product P(M)s were capable of depolymerizing into their monomers in solution or bulk with high efficiency, thus establishing their circular life cycle.

DOI: 10.1021/jacs.1c10162

Source: https://pubs.acs.org/doi/10.1021/jacs.1c10162