Prospective materials for biodegradable and/or biobased pressure-sensitive adhesives: a review

Abstract

A pressure-sensitive adhesive (PSA) is an adhesive system that is permanently tacky and adheres to a variety of surfaces with light pressure without phase changes. These adhesives are most commonly found in adhesive tapes such as the Scotch® tape or Post-it® notes. The majority of PSAs are petroleum-based products and usually not biodegradable. The amount of waste generated from these products is quite large as these products are considered disposable. The present review focuses on biodegradable elastomers and how they can be useful in PSAs. This review also covers some novel PSA systems that are biobased or biodegradable.

Pressure Sensitive Adhesives Based on Epoxidized Soybean Oil: Correlation Between Curing Conditions and Rheological Properties

“…Pressure‐sensitive adhesives (PSA) are a special category of polymeric materials that are permanently tacky at the operating temperature and can adhere to any given substrate under slight pressure in a very short time (Maaßen et al, ; Wool, ; Wu, Li, & Li, ). PSA differ from other adhesives since they can act at room temperature via noncovalent forces without any chemical reaction, phase change (liquid to solid), or solvent evaporation (Cohen, Binshtok, Dotan, & Dodiuk, ; Creton, ; Vendamme et al, ; Wu, Li, & Li, ). These kinds of adhesives have applications in many fields, such as tapes, labels, protection films, and so on, especially in the electric, automotive, packing, and medical industries (Li & Sun, ).…”

High Capacity, Easy Release Adhesives From Renewable Materials

“…“Tacky” PSAs are also inherently non‐reusable as they easily foul and the inelastic processes can permanently deform the physical structure of the adhesive . Additionally, their renewable content is typically below 100% because of the limited availability of natural raw materials and additives, such as tackifying agents, which are necessary for performance . This combination of characteristics does not facilitate the use of traditional PSAs as high capacity, easy release, renewable adhesive materials.…”

Polyols from epoxidized soybean oil and alpha hydroxyl acids and their adhesion properties from UV polymerization

“…The adhesive systems of PSAs are mainly based on synthetic polymers, such as polyacrylates, styrene block copolymers, ethylene-vinyl acetate copolymers, and hydrocarbon tackifiers. Some efforts have been made to develop biobased or biodegradable PSAs [18][19][20][21][22][23]. Sun and co-workers previously developed dihydroxylated soybean polyols (DSO) and formulated DSO and ESO for hot-air-cured and UVcured PSAs [24,25].…”