Stereomicrostructure-regulated biodegradable adhesives
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 P3H...
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| Veröffentlicht in: | Science (American Association for the Advancement of Science) 2025-01, Vol.387 (6731), p.297-303 |
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| creator | Zhang, Zhen Quinn, Ethan C Kenny, Jacob K Grigoropoulos, Alexandra DesVeaux, Jason S Chen, Tiffany Zhou, Li Xu, Ting Beckham, Gregg T Chen, Eugene Y-X |
| description | 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. |
| doi_str_mv | 10.1126/science.adr7175 |
| format | Article |
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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.</description><identifier>ISSN: 0036-8075</identifier><identifier>ISSN: 1095-9203</identifier><identifier>EISSN: 1095-9203</identifier><identifier>DOI: 10.1126/science.adr7175</identifier><identifier>PMID: 39818898</identifier><language>eng</language><publisher>United States: The American Association for the Advancement of Science</publisher><subject>Adhesives ; Biodegradability ; Biodegradation ; Chemical synthesis ; Glues ; Lanthanum ; Poly-3-hydroxybutyrate ; Polyhydroxybutyrate ; Polymers ; Yttrium</subject><ispartof>Science (American Association for the Advancement of Science), 2025-01, Vol.387 (6731), p.297-303</ispartof><rights>Copyright © 2025 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. 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| fulltext | fulltext |
| identifier | ISSN: 0036-8075 |
| ispartof | Science (American Association for the Advancement of Science), 2025-01, Vol.387 (6731), p.297-303 |
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| source | American Association for the Advancement of Science |
| subjects | Adhesives Biodegradability Biodegradation Chemical synthesis Glues Lanthanum Poly-3-hydroxybutyrate Polyhydroxybutyrate Polymers Yttrium |
| title | Stereomicrostructure-regulated biodegradable adhesives |
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