Özparpucu, M.* ; Sánchez-Ferrer, A.* ; Schuh, M.* ; Wilhelm, B.* ; Sarkar, R. ; Reif, B. ; Windeisen-Holzhauser, E.* ; Richter, K.*
Acidic wood extractives accelerate the curing process of emulsion polymer isocyanate adhesives.
J. Appl. Polym. Sci. 139:52189 (2022)
Emulsion polymer isocyanate (EPI) adhesive is one of the most widely used structural adhesives in the woodworking industry. However, there has been a lack of knowledge on how the EPI-adhesive interacts with the chemical constituents of wood, in particular, with the wood extractives that are known to influence the bonding quality. In this study, the interactions of the EPI-adhesive with the water extracts and selected extractives from European wood species were systematically investigated using different analytical techniques. While the alterations in the curing properties of the pure EPI-adhesive and EPI-adhesive-extract mixtures were revealed by in situ rheology and Fourier-transform infrared spectroscopy, evolved gas analysis, and pyrolysis-gas chromatography/mass spectrometry, the solid-state 13C nuclear magnetic resonance were performed for analyzing the final chemical composition of the cured adhesive. Moreover, the influence of the extraction on the mechanical bonding performance was tested by tensile-shear tests. The study revealed significant interactions between the EPI-adhesive and tannin-rich, acidic wood extracts. The acidic chestnut and oak extracts catalyzed the curing reactions and led to a huge increase in the adhesive viscosity. These interactions might affect the bonding quality, for example, adhesive penetration depth and formation of bonding strength, therefore, careful attention is required when bonding acidic wood surfaces.
Impact Factor
Scopus SNIP
Web of Science
Times Cited
Scopus
Cited By
Altmetric
Publikationstyp
Artikel: Journalartikel
Dokumenttyp
Wissenschaftlicher Artikel
Typ der Hochschulschrift
Herausgeber
Schlagwörter
Adhesive ; Atr-ftir Spectroscopy ; Extracts ; Epi ; Nmr ; Rheology ; Wood Bonding; Polyurethane; Behavior; Cure
Keywords plus
Sprache
englisch
Veröffentlichungsjahr
2022
Prepublished im Jahr
HGF-Berichtsjahr
2022
ISSN (print) / ISBN
0021-8995
e-ISSN
1097-4628
ISBN
Bandtitel
Konferenztitel
Konferzenzdatum
Konferenzort
Konferenzband
Quellenangaben
Band: 139,
Heft: 21,
Seiten: ,
Artikelnummer: 52189
Supplement: ,
Reihe
Verlag
Wiley
Verlagsort
111 River St, Hoboken 07030-5774, Nj Usa
Tag d. mündl. Prüfung
0000-00-00
Betreuer
Gutachter
Prüfer
Topic
Hochschule
Hochschulort
Fakultät
Veröffentlichungsdatum
0000-00-00
Anmeldedatum
0000-00-00
Anmelder/Inhaber
weitere Inhaber
Anmeldeland
Priorität
Begutachtungsstatus
Peer reviewed
POF Topic(s)
30203 - Molecular Targets and Therapies
Forschungsfeld(er)
Enabling and Novel Technologies
PSP-Element(e)
G-503090-001
Förderungen
Bundesministerium für Wirtschaft und Energie
Copyright
Erfassungsdatum
2022-06-08