The aim of this work is the design of an apparatus which allows to measure the in plane stress that arises in polymer coating of commercial polystyrene (N2380) below the glass transition temperature (Tg) as result of vapor sorption/desorption processes and its evolution in time. The in plane stress is measured using bending beam cantilever technique. The experiments were performed at different temperatures, using different fugacity of n-pentane inside the system. From the stress state, knowing the material proprieties, the change in the volume recorded during the sorption/desorption process was derived. Through the use ofthe non-equilibrium lattice fluid model (NELF) it is then possible to estimate vapor mass uptake/release in the coating.
In-plane stress measurement in polymer coatings as induced by vapor sorption/desorption processes / Pavesi, Elisa; Minelli, Matteo; Doghieri, Ferruccio. - ELETTRONICO. - 1:(2016), pp. 417-423. (Intervento presentato al convegno Materials Engineering and Sciences Division 2016 - Core Programming Area at the 2016 AIChE Annual Meeting tenutosi a usa nel 2016).
In-plane stress measurement in polymer coatings as induced by vapor sorption/desorption processes
Pavesi, Elisa;Minelli, Matteo;Doghieri, Ferruccio
2016
Abstract
The aim of this work is the design of an apparatus which allows to measure the in plane stress that arises in polymer coating of commercial polystyrene (N2380) below the glass transition temperature (Tg) as result of vapor sorption/desorption processes and its evolution in time. The in plane stress is measured using bending beam cantilever technique. The experiments were performed at different temperatures, using different fugacity of n-pentane inside the system. From the stress state, knowing the material proprieties, the change in the volume recorded during the sorption/desorption process was derived. Through the use ofthe non-equilibrium lattice fluid model (NELF) it is then possible to estimate vapor mass uptake/release in the coating.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
