Controlling the Morphology of Dynamic Thia-Michael Networks to Target Pressure-Sensitive and Hot Melt Adhesives
| Autor: | Steven J. Sibener, Neil D. Dolinski, Julia G. Murphy, Katie M. Herbert, Nicholas R. Boynton, Stuart J. Rowan, Charlie A. Lindberg |
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| Rok vydání: | 2021 |
| Předmět: |
Work (thermodynamics)
Morphology (linguistics) Materials science Dynamic covalent chemistry 02 engineering and technology Adhesion 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Catalysis Hot-melt adhesive Rheology General Materials Science Adhesive Composite material 0210 nano-technology |
| Zdroj: | ACS applied materialsinterfaces. 13(23) |
| ISSN: | 1944-8252 |
| Popis: | A series of multistage (pressure-sensitive/hot melt) adhesives utilizing dynamic thia-Michael bonding motifs are reported. The benzalcyanoacetate Michael acceptors used in this work undergo bond exchange under ambient conditions without external catalysis, facilitating pressure-sensitive adhesion. A key feature of this system is the dynamic reaction-induced phase separation that lends reinforcement to the otherwise weakly bonded materials, enabling weak, repeatable pressure-sensitive adhesion under ambient conditions and strong adhesion when processed as a hot melt adhesive. By using different pairs of benzalcyanoacetate cross-linking units, the phase separation characteristics of the adhesives can be directly manipulated, allowing for a tailored adhesive response. |
| Databáze: | OpenAIRE |
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