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Materials 2018, 11(8), 1326; https://doi.org/10.3390/ma11081326

Influence of the Preparation Method and Photo-Oxidation Treatment on the Thermal and Gas Transport Properties of Dense Films Based on a Poly(ether-block-amide) Copolymer

1
Istituto per la Tecnologia delle Membrane, Consiglio Nazionale delle Ricerche (ITM-CNR), via P. Bucci 17/c, 87036 Rende, Italy
2
Dipartimento di Ingegneria Industriale, Università degli Studi di Salerno, Via Giovanni Paolo II 132, 84084 Fisciano, Italy
3
Istituto per i Polimeri Compositi e Biomateriali, Consiglio Nazionale delle Ricerche (IPCB-CNR), via P. Gaifami 18, 95126 Catania, Italy
*
Authors to whom correspondence should be addressed.
Received: 17 July 2018 / Revised: 26 July 2018 / Accepted: 27 July 2018 / Published: 31 July 2018
(This article belongs to the Special Issue Durability and Life time of Polymers, Composites and Nanocomposites)
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Abstract

Dense films based on the hydrophobic Pebax®2533 were prepared by using solution casting in different solvents as well as compression molding and subjected to photo–aging under ultraviolet (UV) irradiation. The influence of the preparation method, including the casting solvents, as well as the UV irradiation time selected to treat the samples, were evaluated in terms of permeation rates of pure gases (CO2, N2, O2, CH4, He, and H2). The transport data were correlated with the microstructure and surface properties by using differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF MS), as well as water contact angle measurements. The obtained results showed that a controlled photo-oxidation process reduces the hydrophobicity of the Pebax®2533 films, increasing their permeability without compromising their integrity. View Full-Text
Keywords: poly(ether-block-amide) copolymer; photo-oxidation; gas transport properties poly(ether-block-amide) copolymer; photo-oxidation; gas transport properties
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Clarizia, G.; Bernardo, P.; Gorrasi, G.; Zampino, D.; Carroccio, S.C. Influence of the Preparation Method and Photo-Oxidation Treatment on the Thermal and Gas Transport Properties of Dense Films Based on a Poly(ether-block-amide) Copolymer. Materials 2018, 11, 1326.

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