Abstract
Improvement of the adhesion capacity of polypropylene to aluminium can be obtained by adding a small quantity of maleic anhydride grafted polypropylene to the polymer. With increasing maleic anhydride content, the peel strength of the polymer-aluminium assembly first increases due to migration, orientation and chemical bonding, and then decreases as a result of the formation of a weak boundary layer, made of the low molecular weight grafted polymer chains. This study stresses the importance of two phenomena in adhesion: the restructuring of the polymer at the metal interface and the formation of an interphase.
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Schultz, J., Lavielle, L., Carre, A. et al. Surface properties and adhesion mechanisms of graft polypropylenes. J Mater Sci 24, 4363–4369 (1989). https://doi.org/10.1007/BF00544513
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DOI: https://doi.org/10.1007/BF00544513