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Stretchable, Strong, Recyclable Helicide Elastomer Based on Dynamic Covalent Interactions
Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, State Key Lab Met Matrix Composites, Shanghai 200240, Peoples R China.;Univ Lahore, Dept Phys, Lahore 54000, Pakistan..
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Fibre- and Polymer Technology, Polymeric Materials.ORCID iD: 0000-0002-6071-6241
Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, State Key Lab Met Matrix Composites, Shanghai 200240, Peoples R China..
Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, State Key Lab Met Matrix Composites, Shanghai 200240, Peoples R China..
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2023 (English)In: ACS Applied Materials and Interfaces, ISSN 1944-8244, E-ISSN 1944-8252, Vol. 15, no 39, p. 46280-46291Article in journal (Refereed) Published
Abstract [en]

Current methods for making and disposing synthetic polymers have been widely pursued and are largely unsustainable. As a part of the solution, the reversible nature of dynamic covalent bonds emerges as an extraordinarily diverse and valuable feature in the development of exotic molecules and extended structures. With these bonds, it should be possible to construct recyclable and mechanically interlocked molecular structures using relatively simple precursors with preorganized geometries. A new helicide-based elastomer network is developed here with self-healing, recycling, and degradation features using a similar concept. The best self-healing performance (100%) was noted over 10-20 min, with various H2O, HCl, and NaOH solutions that delivered mechanical properties in the 1-1.4 MPa range. For hydrolytic degradation, the parameters are defined based on the type of binding, the pH of the solutions, and the copolymer network, which endowed a degradation time of approximately 4-11 h for each prepared sample. However, due to the reversible nature of the dynamic bonds, the material showed good recyclable mechanical properties compared to the pristine samples after five consecutive cycles, which meet the requirements of recyclable materials and recyclable packaging.

Place, publisher, year, edition, pages
American Chemical Society (ACS) , 2023. Vol. 15, no 39, p. 46280-46291
Keywords [en]
recyclable, self-healing, degradable, elastomers, helicide
National Category
Textile, Rubber and Polymeric Materials Polymer Technologies
Identifiers
URN: urn:nbn:se:kth:diva-338890DOI: 10.1021/acsami.3c08329ISI: 001069259800001PubMedID: 37729208Scopus ID: 2-s2.0-85174080365OAI: oai:DiVA.org:kth-338890DiVA, id: diva2:1808336
Note

QC 20231031

Available from: 2023-10-31 Created: 2023-10-31 Last updated: 2023-10-31Bibliographically approved

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Hedenqvist, Mikael S.

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