Pyrrolidone and Caprolactam‐Based Materials in Adhesion Related Applications

Abstract

Adhesion is the process of attachment of substances due to the presence of intermolecular forces of attraction between them. Polyvinyl pyrrolidone (PVP) polymers have widespread use in the adhesive industry because of their favorable physicochemical properties. In an aqueous environment, the adhesive properties of pyrrolidone‐based materials are correlated to their polarities. Pressure sensitive adhesives (PSA) are an unusual class of adhesive polymers. A PSA composition should also exhibit high‐cohesive strength and elasticity. Lactam‐based vinyl monomers are widely employed in ultraviolet and electron beam curable adhesives commonly found in coatings, inks, optical materials, and packaging applications. Urea‐formaldehyde thermoset resins are one of the most important classes of adhesive resins for producing wood‐based panels. The adhesives were made by coaxial‐electrospinning of polycaprolactam as the core and PVP as the adhesive sheath. The resulting material was radiation‐crosslinked to yield matrices that were composed of fibrous layered materials.