https://doi.org/10.1051/epjconf/202227201008
Microscopic versus Macroscopic Glass Transition(s) in Blends of Industrial Interest
1
Centro de Física de Materiales (CFM) (CSIC-UPV/EHU) Materials Physics Center (MPC), San Sebastián, Spain
2
Manufacture Francaise des Pneumatiques MICHELIN, Clermont-Ferrand, France
3
Departamento de Polímeros y Materiales Avanzados: Física, Química y Tecnología, UPV/EHU, San Sebastián, Spain
4
Institut Laue-Langevin, Grenoble, France
5
Donostia International Physics Center (DIPC), San Sebastián, Spain
* Corresponding author: nshafqat001@ikasle.ehu.eus
Published online: 17 November 2022
We investigate by neutron scattering and calorimetry a mixture of styrene-butadiene rubber (SBR) and a commercial resin. The neat materials present a large dynamic contrast, having SBR a much lower glass-transition temperature than the resin. The focus is to exploit neutron scattering selectivity in an isotopically labelled sample where deuterated SBR is the majority component. This direct insight into the resin atomic motions within the mixture allows determining the ‘microscopic’ glass transition of the resin in the presence of the a priori much more mobile SBR. This transition takes place in the vicinity of the initial calorimetric glass transition temperature, mainly dictated by the majority component.
© The Authors, published by EDP Sciences, 2022
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
