Effect of molecular weight and polymer composition on gallol-functionalized underwater adhesive
Jinhong Yu1, Bohan Cheng, Hirotaka Ejima
1Department of Materials Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku 113-8656, Japan. ejima@material.t.u-tokyo.ac.jp.
Abstract:
Despite high demands from various industries, strong adhesion in a wet environment remains challenging. We investigated the underwater adhesion of gallol-functionalized polymers as a function of molecular weight and gallol content. By optimizing these parameters, the underwater adhesion strength of aluminium substrates exceeded 4 MPa. Therefore, the biomimetic molecular design of phenolic polymers is effective for the development of strong underwater adhesives.
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