Enhancement of mechanical and thermal properties of PBSeT copolyester by synthesizing AB-type PBSeT-PLA macromolecules

IF 23.2 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES Advanced Composites and Hybrid Materials Pub Date : 2024-12-16 DOI:10.1007/s42114-024-01151-7

Tong Liu, Chao An, XinYi Jing, Yingchun Li, Zhimao Li, Wensheng Wang, Xinming Ye

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Abstract

Material scientists have investigated biodegradable materials with excellent mechanical properties and high melting points. In this study, an AB-type poly(butanediol sebacate-butane diol terephthalate)-polylactic acid (PBSeT-PLA) macromolecule was synthesized using the esterification-polycondensation-esterification method, with hexamethylene diisocyanate (HDI) unit serving as a chain extender. Analysis using FTIR, ¹H NMR, and XRD confirmed the synthesis of PBSeT-PLA rather than a mere blend. Differential scanning calorimetry (DSC), thermogravimetric analysis (TG), and Vicat softening temperature (VST) tests revealed that the melting and Vicat softening points of PBSeT-PLA were increased by 30 °C and 15 °C, respectively, compared to PBSeT. Furthermore, the tensile strength, puncture load, and tearing strength of P2 (PBSeT-PLA, with an NCO to OH ratio of 1.5) were enhanced by 32.8%, 38.5%, and 71.8%, respectively, compared to PBSeT. Enzymatic degradation experiments demonstrated that the synthesized materials are biodegradable, with degradation initiating at the material surface. Overall, the thermal and mechanical property improvements suggest that PBSeT-PLA holds promise for applications in agricultural films and packaging materials.

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通过合成 AB 型 PBSeT-PLA 大分子提高 PBSeT 共聚聚酯的机械和热性能

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来源期刊

Advanced Composites and Hybrid Materials Multiple-

CiteScore

26.00

自引率

21.40%

发文量

185

期刊介绍： Advanced Composites and Hybrid Materials is a leading international journal that promotes interdisciplinary collaboration among materials scientists, engineers, chemists, biologists, and physicists working on composites, including nanocomposites. Our aim is to facilitate rapid scientific communication in this field. The journal publishes high-quality research on various aspects of composite materials, including materials design, surface and interface science/engineering, manufacturing, structure control, property design, device fabrication, and other applications. We also welcome simulation and modeling studies that are relevant to composites. Additionally, papers focusing on the relationship between fillers and the matrix are of particular interest. Our scope includes polymer, metal, and ceramic matrices, with a special emphasis on reviews and meta-analyses related to materials selection. We cover a wide range of topics, including transport properties, strategies for controlling interfaces and composition distribution, bottom-up assembly of nanocomposites, highly porous and high-density composites, electronic structure design, materials synergisms, and thermoelectric materials. Advanced Composites and Hybrid Materials follows a rigorous single-blind peer-review process to ensure the quality and integrity of the published work.