Abstract

ABA poly(styrene-b-isoprene) block copolymers (SIS) with various molecular characteristics were prepared. They were used as heat activated films in simple overlap glass joints. The influence of activation temperature on their tensile shear resistance at break was investigated. The decrease in viscosity with increasing temperature could not explain the observed maximum of joint resistance for a given temperature. A morphological interpretation which fits well the experimental observations is proposed.

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