Autohesion Mechanisms at Interfaces Between Random Copolymer Melts: Mesoscopic Simulations with Realistic Coarse-Grained Models

RLN Mbitou and F Goujon and A Dequidt and B Latour and J Devemy and N Martzel and P Hauret and P Malfreyt, CHEMPHYSCHEM, 25 (2024).

DOI: 10.1002/cphc.202400114

The increase in welding time during the interdiffusion of a pair of non reacting random copolymer melts favors the strength rate of healing at the interface. Furthermore, the diffusion kinetic during the interpenetration of copolymer chains across the interface is strongly dependent on molecular weight. In this paper we perform mesoscopic simulations with realistic coarse grain models to study the autohesion mechanism across the interface between slightly entangled styrene- butadiene random copolymer melts. A healed interface between two phases A and B of a SBR copolymer is then elongated along the normal to the interface. The traction creates a large cavitation before the rupture of the material. image

Return to Publications page