Emulsion‐Based Pressure‐Sensitive Adhesives: A Review

Pressure sensitive adhesives (PSAs) adhere instantaneously to a variety of surfaces upon application of slight pressure and can be obtained using different technologies. Increasing environmental concerns and regulations are the major driving forces for the development of emulsion‐based PSAs. Given the number of factors affecting the emulsion polymerization process and versatility of emulsion‐based polymers, there is a need to identify and model those factors that significantly influence particular PSA applications. In this review, factors such as emulsion polymerization components, latex rheology, and film formation are examined in light of their relevance to adhesion. In addition, the body of knowledge related to measurement methods, design factors, and modeling of each of the three major PSA performance characteristics (i.e., tack, peel strength, and shear strength) is reviewed with a particular emphasis on emulsion‐based PSAs.