Can the topological transition of vitrimers be observed in a neutron scattering scan?
Vitrimers are 3D-networks that can change their topology through bond exchange reactions, which are thermally activated. Vitrimeric polymers are not only scientifically exciting but also constitute promising sustainable materials with thermoset-like properties and end-of-life reprocessability. As the glass-transition, the topological transition associated to the restructuration of the dynamic network in vitrimers is not an actual transition but a crossover range, and its characteristic temperature Tv depends on the cooling-heating rate. As far as we know, until now Tv has been mainly determined by mechanical or thermal expansion methods. On the other hand, microscopic finger-prints of the glass transition Tg in glass-forming polymers ¿usually determined by DSC-- can clearly be observed in a neutron elastic scan. With these experiments (elastic and inelastic scans on protonated samples), we want to discern whether the topological transition in vitrimers has, as the glass transition, a reflection in the atomic (H) displacements as directly monitored by neutrons.
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The recommended format for citing this dataset in a research publication is in the following format:
Arantxa Arbe; APPEL Markus and COLMENERO Juan. (2024). Can the topological transition of vitrimers be observed in a neutron scattering scan?. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.9-11-2121
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