Dynamically Cross-Linking Soybean Oil and Low-Molecular-Weight Polylactic Acid toward Mechanically Robust, Degradable, and Recyclable Supramolecular Plastics

Xu Fang; Nengan Tian; Wenyuan HuYunan QingHao WangXin GaoYanguo QinJunqi Sun

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Dynamically Cross-Linking Soybean Oil and Low-Molecular-Weight Polylactic Acid toward Mechanically Robust, Degradable, and Recyclable Supramolecular Plastics

机译：Dynamically Cross-Linking Soybean Oil and Low-Molecular-Weight Polylactic Acid toward Mechanically Robust, Degradable, and Recyclable Supramolecular Plastics

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To promote the sustainable development of society, it is important to developmethods for facile fabrication of bio-based plastics that are mechanicallyrobust and capable of recycling and completely degrading in soil. In thisstudy, such bio-based supramolecular plastics are conveniently and costeffectivelyfabricated by cross-linking epoxidized soybean oil (ESO) andlow-molecular-weight polylactic acid (PLA) (≈2 kDa) with dynamic boroxines.The bio-based supramolecular plastic, which is denoted as ESO-PLA, exhibitsa tensile strength of ≈43 MPa and is highly flexible and water-resistant. Afterbeing stored in an environment with a 100 relative humidity for 10 days, thetensile strength of the plastic remains higher than polyethylene. Due to thereversibility of boroxines, the ESO-PLA plastic can be conveniently processedinto different shapes and products. Meanwhile, the plastic can be recycledmultiple times for repeated usage by either hot-pressing or solvent-assisteddepolymerization/repolymerization methods. Benefiting from the easydegradation of ESO and low-molecular-weight PLA, the breakage of boroxinecross-links enables rapid and complete degradation of the plastics in soilwithin 60 days. Additionally, in vitro and in vivo tests prove that the ESO-PLAplastic exhibits satisfactory biocompatibility, which extends its application inmedicine, food, and cosmetics industries.

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来源
《Advanced functional materials》 |2022年第46期|2208623.1-2208623.9|共9页
作者
Xu Fang; Nengan Tian; Wenyuan HuYunan QingHao WangXin GaoYanguo QinJunqi Sun;
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作者单位

State Key Laboratory of Supramolecular Structure and MaterialsCollege of ChemistryJilin UniversityChangchun 130012, P. R. China;

Orthopaedic Medical CenterThe Second Hospital of Jilin UniversityChangchun 130041, P. R. China;

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boroxines; degradable plastics; recyclable materials; supramolecular materials; supramolecular plastics;

Dynamically Cross-Linking Soybean Oil and Low-Molecular-Weight Polylactic Acid toward Mechanically Robust, Degradable, and Recyclable Supramolecular Plastics

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