Download file (1.72 MB)
Download as zip (1.46 MB)

Collection

Citation

Description:

We show that dynamic covalent exchange at the interface of two thermosetting polymers results in
strong bonding between the materials via creation of a new material at the interface. Thus, polymers of signi cantly di erent polarities can be bonded without the use of adhesives. We also show that such
dynamic covalent exchange is not only limited to the interface but also penetrates into the bulk material (ca. 20 microns), thereby creating a strong bond. The creation of a new material at the interface was con rmed by Energy Dispersive X-ray (EDX) elemental mapping as well as a new glass transition tempera-ture at the interface. Using this phenomenon, we show that hydrophobic, compliant polymers can also be used as adhesives for polar, sti materials. We also show that such dynamic exchange also takes place in the presence of llers like nano-silica. Lastly, using this technique, we demonstrate the adhesive-less fab-rication of layered materials where each layer has vastly di erent polarities and mechanical properties, thereby tuning the failures modes of the resulting composite material.

Rights:

• cc-by-3.0
  

Keyword: adhesive

Date published: 2024-12-11

Publisher: Royal Society of Chemistry (RSC)

Journal:

• RSC Applied Polymers (ISSN: 2755371X) vol. 3 issue. 1

Funding:

• National Institute for Materials Science
• Japan Science and Technology Agency JPMJCR19J3

Manuscript type: Publisher's version (Version of record)

MDR DOI:

First published URL: https://doi.org/10.1039/d4lp00288a

Related item:

Other identifier(s):

Contact agent:

Updated at: 2025-01-25 08:30:28 +0900

Published on MDR: 2025-01-25 08:30:29 +0900