USA||Materials Science Division;
Fort Collins;
Lawrence Berkeley National Laboratory;
CO;
Colorado State University;
South China Advanced Institute for Soft Matter Science and Technology;
Berkeley;
University of California;
Renewable Resources and Enabling Sciences Center;
Department of Materials Science and Engineering;
USA||Department of Chemistry;
USA;
South China University of Technology;
Department of Chemistry;
USA||BOTTLE Consortium;
Guangzhou;
School of Emergent Soft Matter;
China;
USA||Kavli Energy NanoScience Institute;
National Renewable Energy Laboratory;
Golden;
CA;
期刊名称:
Science
i s s n:
0036-8075
年卷期:
2025 年
387 卷
Jan.17 TN.6731 期
页 码:
297-303
页 码:
摘 要:
Commercial adhesives are petroleum-based thermoset networks or nonbiodegradable thermoplastic hot melts, making them ideal targets for replacement by biodegradable alternatives. Poly(3-hydroxybutyrate) (P3HB) is a biorenewable and biodegradable alternative to conventional plastics, but microbial P3HB, which has a stereoperfect stereomicrostructure, exhibits no adhesion. In this study, by elucidating the fundamental relationship between chemocatalytically engineered P3HB stereomicrostructures and adhesion properties, we found that biodegradable syndio-rich P3HB exhibits high adhesion strength and outperforms common commercial adhesives, whereas syndiotactic, isotactic, or iso-rich P3HB shows no measurable adhesion. The syndio-rich stereomicrostructure brings about desired thermomechanical and viscoelastic properties of P3HB that enable strong adhesion to a range of substrates tested, including aluminum, steel, glass, and wood, and its performance is insensitive to molar mass and reprocessing or reuse.