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

被引：30

作者：

Clarizia, Gabriele ^{[1
]}

Bernardo, Paola ^{[1
]}

Gorrasi, Giuliana ^{[2
]}

Zampino, Daniela ^{[3
]}

Carroccio, Sabrina C. ^{[3
]}

机构：

[1] CNR, ITM, Via P Bucci 17-c, I-87036 Arcavacata Di Rende, Italy

[2] Univ Salerno, Dipartimento Ingn Ind, Via Giovanni Paolo II 132, I-84084 Fisciano, Italy

[3] CNR, IPCB, Via P Gaifami 18, I-95126 Catania, Italy

来源：

MATERIALS | 2018年 / 11卷 / 08期

关键词：

poly(ether-block-amide) copolymer; photo-oxidation; gas transport properties; ASSISTED-LASER-DESORPTION/IONIZATION; BLOCK-COPOLYMER; MEMBRANES; SEPARATION; SOLVENT; POLYMER; NYLON-66; OXIDE);

D O I：

10.3390/ma11081326

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Dense films based on the hydrophobic Pebax (R) 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, N-2, O-2, CH4, He, and H-2). 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 (R) 2533 films, increasing their permeability without compromising their integrity.

引用

页数：18

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