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- W4200257974 abstract "• A novel class of environmentally degradable copolyesters were prepared. • With fixed aromatic but varied aliphatic units, properties could be controlled precisely. • The poor gas barrier of PBAT could be drastically improved by diglycolate. • Diglycolic acid played a key role in the polymer hydrolysis. • PBADTs exhibited the good storage stability in a low humidity environment. Aliphatic–aromatic copolyesters are indispensable in degradable plastics, but their properties are limited by low strength and modulus, and slow degradation rates in natural environment. Herein, we report a novel molecular design method to prepare poly(butylene adipate–co–diglycolate–co–terephthalate)(PBADT) copolyesters. In detail, the aromatic unit is fixed at 50% molar content of butylene terephthalate (BT) units, while the aliphatic units are consisted of butylene adipate (BA) and butylene diglycolate (BD) units. The PBADT copolyesters have melting temperatures higher than 130 °C and manifest rapid crystallization, high elastic modulus (>129 MPa) and satisfied ductile tensile behavior (>770%). Their gas barrier performance and hydrophilicity all increase with increasing BD units. Compared with PBAT, faster hydrolysis and seawater degradation are observed, which is explained by the more hydrophilic structure of diglycolate. This work provides insights and direction for the development of high-performance yet environmentally degradable alternatives to conventional biodegradable aliphatic–aromatic polyesters. This work provides insights and direction for the development of high-performance yet environmentally degradable alternatives to conventional biodegradable polyesters." @default.
- W4200257974 created "2021-12-31" @default.
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- W4200257974 date "2022-01-01" @default.
- W4200257974 modified "2023-10-18" @default.
- W4200257974 title "Enhanced degradation and gas barrier of PBAT through composition design of aliphatic units" @default.
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- W4200257974 doi "https://doi.org/10.1016/j.polymdegradstab.2021.109795" @default.
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