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Nature-inspired Velcro compatibilization system for silica/rubber coupling

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Academic year: 2021

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Is the new nature-mimicking Velcro concept feasible for an alternative silica/polymer coupling??

Rafal Anyszka1,2, Maja Szczechowicz1,2, Karolina Beton1,2, Dariusz M. Bielinski2, Anke

Blume1

1 University of Twente, Faculty of Engineering Technology, Department of Mechanics of

Solids, Surfaces & Systems (MS3), Chair of Elastomer Technology & Engineering,

Enschede, The Netherlands – r.p.anyszka@utwente.nl

2 Lodz University of Technology, Faculty of Chemistry, Institute of Polymer and Dye

Technology, Lodz, Poland – rafal.anyszka@p.lodz.pl

A new concept for an alternative silica/polymer coupling system was introduced to the tire industry in 2019 to overcome the disadvantage of the current system. If currently the relatively stiff covalent sulfur bridge of the silica/silane/polymer connection is broken, there is no possibility to reconnect. As a consequence, a completely different coupling concept was considered, mimicking the Velcro system known from nature. The tangled and cross-linked rubber macromolecules act as molecular loops and relatively long elastomer brushes grafted on the silica surface act as molecular hooks. The in-rubber properties will be presented to show the efficiency of this new system.

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