Paper_BWG_TSB_WC_MTC.pdf (654.44 kB)
A fluoride degradable crosslinker for debond-on-demand polyurethane based crosslinked adhesives
journal contribution
posted on 2023-06-09, 22:17 authored by Tahkur S Babra, Colin Warriner, Nicholas Bazin, Wayne Hayes, Barnaby GreenlandBarnaby GreenlandThe requirement to consider the whole lifecycle of products including disassembly and recycling has resulted in considerable interest in debond-on-demand adhesives. These smart materials undergo controlled loss of adhesive strength when subject to a specific stimulus. This paper reports the design of a crosslinked polyurethane (PU) adhesive which incorporates a fluoride responsive degradable group. The crosslinked PU (CLP) adhesive showed a 28 % increase in adhesive bonding strengths by lap shear testing (14.6 MPa) when compared to structurally analogous linear PU (LPU) adhesive (11.4 MPa). After 3 h in contact with fluoride ions, the CLP exhibited a 55 % loss in adhesive bonding strength (from 14.6 MPa to 6.7 MPa) as a consequence of selective degradation of covalent bonds at the crosslinking sites. This work introduces a new route to dismantle components adhered with the widely used PU adhesives, facilitating recovery of valuable materials, and dramatically reducing waste.
History
Publication status
- Published
File Version
- Accepted version
Journal
Materials Today CommunicationsISSN
2352-4928Publisher
ElsevierExternal DOI
Volume
26Page range
1-6Article number
a101777Department affiliated with
- Chemistry Publications
Full text available
- Yes
Peer reviewed?
- Yes
Legacy Posted Date
2020-11-26First Open Access (FOA) Date
2021-11-06First Compliant Deposit (FCD) Date
2020-11-26Usage metrics
Categories
No categories selectedKeywords
Licence
Exports
RefWorks
BibTeX
Ref. manager
Endnote
DataCite
NLM
DC