Adhesion and self-adhesion of immiscible rubber blends

作者：Smitthipong Wirasak; Nardin Michel^*; Schultz Jacques; Suchiva Krisda

来源：International Journal of Adhesion and Adhesives, 2009, 29(3): 253-258.

DOI：10.1016/j.ijadhadh.2008.06.003

• Rubbers
• Interphases
• Tack

Rubber blends of synthetic polyisoprene rubber (IR) and hydrogenated acrylonitrile butadiene rubber (HNBR) are prepared with different compositions. First, DSC results confirm that IR and HNBR are incompatible rubbers. A tensile testing machine equipped with a tack probe test allows us to measure the level of adhesion at rubber blends/glass as well as rubber blends/pure rubber interfaces, for contact times ranging from 0.1 s to a few hours. The adhesive properties of rubber blends were compared with those of pure rubbers. Adhesion energy G of IR/HNBR blends onto glass increases with the IR content in disagreement with a simple law of mixtures because of the influence of bulk properties of blends (morphology and mechanical behaviour). For a given blend, C increases with contact time certainly due to an interfacial reorganisation. Self-adhesion energies G(S) of pure rubbers and IR/HNBR blends increase also with contact time, thanks to mainly an interdiffusion phenomenon of the rubber chains through the interface. Self-adhesion energy of blends in contact with pure IR follows a simple law of mixtures as a function of IR content. On the contrary, the variation of self-adhesion energy of these blends in contact with pure HNBR is more complex.

• 出版日期2009-4