.png){kind=icon}
.png){kind=icon}
Return
Thermally and base-triggered ‘debond-on-demand’ crosslinked polyurethane adhesives
.png){kind=icon}
OA
AI
A
M
J
W
DOI：10.1039/D5FD00051C.png)
.png){kind=icon}
.png){kind=icon}
Share.png){kind=icon}
Save
Abstract
En 中文
To address current industrial needs and modern legislation; a series of rapidly degradable and strongly adhering crosslinked polyurethanes featuring the commercially available and degradable chain-extender 2; 2′-sulfonyldiethanol have been made for use as depolymerisable coatings and ‘debond-on-demand’ hot-melt adhesives. Variation of the chain-extended polyurethane (CEPU) composition; through increased hard segment content; provided a route to tailor the mechanical; adhesive; and degradable characteristics; whereby CEPUs with ultimate tensile strengths and elongation at break of up to 42.68 MPa and 17.59 ε; respectively; could be achieved. The adhesive shear strength of the CEPUs was investigated on a selection of substrates with the highest shear strength observed of 7.80 MPa on aluminium. Depolymerization was triggered via exposure of the CEPUs to tetrabutylammonium fluoride (TBAF); causing the solubilisation of the CEPUs and the generation of low molecular weight species. Rapid ‘debond-on-demand’ adhesion was also achieved upon exposure to 1 M TBAF(aq); with losses in shear strength of up to 34% on aluminium when exposed for 30 minutes.
AI Summary
Key information extracted from the uploaded paper, including a brief overview, abstract, background, key highlights, visual analysis, and future outlook.
Journal
IF:
3.1
Papers:
4.4K
Citations:
1.0W
Organization
Cited Papers