Affiliation:
1. Beijing National Laboratory for Molecular Sciences, Key Laboratory of Engineering Plastics, Institute of Chemistry Chinese Academy of Sciences (ICCAS) Beijing People's Republic of China
2. University of the Chinese Academy of Sciences Beijing People's Republic of China
3. China Shenhua Coal to Liquid and Chemical Co., Ltd. Beijing People's Republic of China
Abstract
AbstractBio‐based copolymers with excellent mechanical properties and biodegradability are highly desired for packaging and agricultural applications. In this work, a series of high molecular weight bio‐based poly(ester‐carbonate)s are synthesized using glycolic acid (GA), dimethyl carbonate (DMC), and 1,4‐butanediol (BDO). The intrinsic viscosity ([η]) of these copolymers ranges from 0.70 to 1.11 dL/g. The tensile strength, elastic modulus, and elongation at break of PBCGA10 are 19.69 ± 2.40 MPa, 151.20 ± 37.17 MPa, and 1173 ± 142%, respectively, which are superior to the mechanical properties of PBAT. The degradation weight loss of PBCGA10 and PBCGA20 after 30 days can reach 8% and 40%, respectively, indicating excellent degradation performance of the copolymers. Moreover, copolymers undergo degradation through a surface degradation mechanism. The main products of copolymer degradation are BDO, CO2, and H2O, which do not cause harm to organisms and the environment.
Funder
Key Technologies Research and Development Program
Subject
Materials Chemistry,Polymers and Plastics,Surfaces, Coatings and Films,General Chemistry