Organocatalytic Ring-Opening (Co)polymerization of Six-Membered Monothiocarbonates for the Synthesis of Recyclable Poly(monothiocarbonate)s

IF 5.2 1区化学 Q1 POLYMER SCIENCE Macromolecules Pub Date : 2025-02-17 DOI:10.1021/acs.macromol.4c03028

Jianghui Li, Yingying Zhang, Yang Li, Chengjian Zhang, Xinghong Zhang

引用次数: 0

Abstract

Developing chemically depolymerizable polymers (CDPs) that can revert back to monomers is of great significance for realizing a circular polymer economy. Poly(thiocarbonate)s, sulfur analogs of polycarbonates, are a rather under-investigated group of sulfur-enriched polymers with high potential as CDPs. Here, we report a recyclable poly(monothiocarbonate) obtained via organocatalytic ring-opening polymerization of a six-membered cyclic monothiocarbonate. The resulting polymer exhibited a melting point up to 127 °C and a Young’s modulus of 305 MPa with a tensile stress of 23.2 MPa at 8.8% strain, while the analogue polycarbonate derived from trimethylene carbonate is amorphous with a low modulus (<100 MPa) under ambient temperature. Moreover, a successful copolymerization of 1,3-oxathian-2-one and 5,5-dimethyl-1,3-oxathian-2-one provided an access to precise tunability of thermomechanical performance of the poly(monothiocarbonate)s.

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六元单硫代碳酸酯开环（Co）有机催化聚合合成可回收聚单硫代碳酸酯

开发化学解聚聚合物（CDPs），使其还原为单体，对实现循环聚合物经济具有重要意义。聚（硫代碳酸盐）s是聚碳酸酯的硫类似物，是一种研究较少的富硫聚合物，具有作为CDPs的高潜力。在这里，我们报告了一个可回收的聚（单硫代碳酸酯）通过有机催化开环聚合的六元环单硫代碳酸酯。所得聚合物熔点高达127°C，杨氏模量为305 MPa，在8.8%应变下拉伸应力为23.2 MPa，而由碳酸三亚甲基酯衍生的类似聚碳酸酯在室温下是无定形的，模量低（<100 MPa）。此外，1,3-草酸-2- 1和5,5-二甲基-1,3-草酸-2- 1的成功共聚为聚单硫碳酸盐的热机械性能的精确可调性提供了途径。

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来源期刊

Macromolecules 工程技术-高分子科学

CiteScore

9.30

自引率

16.40%

发文量

942

审稿时长

2 months

期刊介绍： Macromolecules publishes original, fundamental, and impactful research on all aspects of polymer science. Topics of interest include synthesis (e.g., controlled polymerizations, polymerization catalysis, post polymerization modification, new monomer structures and polymer architectures, and polymerization mechanisms/kinetics analysis); phase behavior, thermodynamics, dynamic, and ordering/disordering phenomena (e.g., self-assembly, gelation, crystallization, solution/melt/solid-state characteristics); structure and properties (e.g., mechanical and rheological properties, surface/interfacial characteristics, electronic and transport properties); new state of the art characterization (e.g., spectroscopy, scattering, microscopy, rheology), simulation (e.g., Monte Carlo, molecular dynamics, multi-scale/coarse-grained modeling), and theoretical methods. Renewable/sustainable polymers, polymer networks, responsive polymers, electro-, magneto- and opto-active macromolecules, inorganic polymers, charge-transporting polymers (ion-containing, semiconducting, and conducting), nanostructured polymers, and polymer composites are also of interest. Typical papers published in Macromolecules showcase important and innovative concepts, experimental methods/observations, and theoretical/computational approaches that demonstrate a fundamental advance in the understanding of polymers.