Chemical Recycling of Poly(butylene terephthalate) into Poly(ethylene brassylate-co-butylene terephthalate) with Tunable Thermal, Mechanical and Biodegradable Properties
IF 4.4 2区 化学Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY
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引用次数: 0
Abstract
We report here a high-value-added strategy for the chemical recycling of poly(butylene terephthalate) (PBT) into poly(ethylene brassylate-co-butylene terephthalate) (PEBBT) copolyesters. By cyclodepolymerization, postconsumer PBT can be first depolymerized to attain cyclic oligo(butylene terephthalate)s (COBTs), which are further copolymerized with ethylene brassylate (EB) and 1,10-decanediol for the preparation of PEBBT copolyesters using a cascade polycondensation coupling ring-opening polymerization (PROP) method. The chemical structures of PEBBT copolyesters are carefully characterized through quantitative 1H and 2D 1H–1H gCOSY NMR spectroscopies. By changing the initial feeding ratio of COBTs and EB, the contents of aromatic and aliphatic polyester segments in PEBBT can be flexibly tuned, which can be further used to modulate the crystallinity, mechanical and biodegradable properties. These PEBBT copolyesters exhibited remarkable mechanical performance with high strength, elongation at break and toughness. Moreover, in the presence of lipase, complete biodegradation can be achieved for copolyesters with high aliphatic polyester segment contents.
期刊介绍:
ACS Applied Polymer Materials is an interdisciplinary journal publishing original research covering all aspects of engineering, chemistry, physics, and biology relevant to applications of polymers.
The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrates fundamental knowledge in the areas of materials, engineering, physics, bioscience, polymer science and chemistry into important polymer applications. The journal is specifically interested in work that addresses relationships among structure, processing, morphology, chemistry, properties, and function as well as work that provide insights into mechanisms critical to the performance of the polymer for applications.