期刊
GREEN CHEMISTRY
卷 24, 期 22, 页码 8637-8670出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d2gc02608b
关键词
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资金
- National Key R&D Program of China [2021YFB3700300]
- National Natural Science Foundation of China [52073054, 51803026]
- Fundamental Research Funds for the Central Universities [2232021A-02]
- Shanghai Committee of Science and Technology, China [21ZR1480000]
Isohexides are a family of bio-based compounds with high structural rigidity, high hydrophilicity, and distinct chirality, making them highly promising for developing novel sustainable polymers. However, the preparation of high-quality polymers remains a challenge due to their insufficient purity, lower reactivity, and limited thermal stability.
Isohexides (1,4:3,6-dianhydrohexitols) represent a family of bio-based heterocyclic diols attracting over 40 years' attention from both industry and academia. Their unique properties, including high structural rigidity, high hydrophilicity and distinct chirality, make them highly promising for developing novel sustainable polymers with higher performance, (bio)degradability and optical properties. Nevertheless, the preparation of high-quality polymers with sufficiently high molecular weight, an acceptable degree of discoloration and high/tunable contents of isohexides for commercial applications remains a great challenge due to their insufficient purity, lower reactivity and limited thermal stability. With respect to the possibility of commercialization, this review focuses on the efficiency of different short-process polymerization strategies for sustainable isohexide-based polyesters polymerized either directly or coupled with preferably in situ activation strategies. The influential factors for polymerization efficiency and the key catalytic systems of the polyesters will be also systematically discussed to gain clear insight into the challenges and prospects of isohexide-based polyesters for further practical applications.
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