Interaction of Cyanoacrylate with Metal Oxide Surfaces (Cu, Al)

Abstract

Cyanoacrylates are an extremely reactive class of adhesives. Despite their commercial use as instant adhesives, the adhesion mechanism, especially to technically relevant oxidized metal surfaces, has not yet been sufficiently investigated. In the present work, ultra-thin ethyl cyanoacrylate films are deposited on copper oxide and aluminum oxide by spin coating and cured there. Various surface sensitive spectroscopy methods are used to identify possible interactions. X-Ray photoelectron spectroscopy (XPS) indicates, among other information, hydrogen bonding of the carbonyl group to the oxidized surfaces. Metastable induced electron spectroscopy (MIES) measure-ments support the theory of this preferential molecular orientation. In addition, XPS shows the presence of an ionic carboxylate (COO À ) species at the interface. Infrared reflection adsorption spectroscopy (IRRAS) measurements confirm this ionic interaction and furthermore allow to investigate the influence of water on the reaction. A possible interaction mechanism of cyanoacrylates with metal oxides could be proposed. The formation of a carboxylate species probably occurs by hydrolysis of the ethyl group via the intermediate of a carboxyl (COOH) species.

Characterization of Molecular Interactions in the Bondline of Composites from Plasma-Treated Aluminum and Wood

“…Accordingly, it is likely that hydrogen bonding occurs between the carbonyl oxygen of the PVAc and the hydroxyl of the surface, which was significantly increased by the plasma treatment. Such interactions of hydrogen bonds between metal oxides and the carbonyl groups of similar polymers, such as PMMA or PECA, have also been shown in the literature [43][44][45]. Furthermore, hydrogen bonds with the COOH species would be conceivable.…”

Design of biocompatible polylactic acid–polyethylene glycol combination for manufacturing biodegradable staplers

“…For minor lacerations, strips are usually recommended as reinforcement for surgical staples and sutures 12 . Cyanoacrylate glues' low mechanical strength limits their application in high‐tension areas due to their high cost, burning effect, and fatigue failure after a short period 13,14 . While surgical metal staples provide adequate mechanical strength to hold wound edges in place, their removal after healing causes pain and inflammation.…”

“…12 Cyanoacrylate glues' low mechanical strength limits their application in high-tension areas due to their high cost, burning effect, and fatigue failure after a short period. 13,14 While surgical metal staples provide adequate mechanical strength to hold wound edges in place, their removal after healing causes pain and inflammation. In addition, metal staples are challenging to use for lacerations.…”