Thermally stable nanoporous cyanate ester resin/linear polyurethane hybrid networks created by nuclear technologies

POLYMER

卷:228

Article

Grigoryeva, Olga¹  Fainleib, Alexander¹  Starostenko, Olga¹  Gusakova, Kristina¹  Sakhno, Viktor²  Borzakovskiy, Andrey²  Kovalinska, Tetyana²  Youssef, Boulous³  Gouanve, Fabrice⁴  Espuche, Eliane⁴  Grande, Daniel⁵ 

[1] Natl Acad Sci Ukraine, Inst Macromol Chem, 48 Kharkivske Shose, UA-02160 Kiev, Ukraine

[2] Natl Acad Sci Ukraine, Inst Nucl Res, 47 Prospekt Nauky, UA-03680 Kiev, Ukraine

[3] Normandie Univ, INSA Rouen, Polymeres, Biopolymeres,Surfaces, Ave Univ,BP 08, F-76801 St Etienne Du Rouvray, France

[4] Univ Lyon 1, Univ Lyon, CNRS, UMR 5223,Ingenierie Mat Polymeres, F-69622 Villeurbanne, France

[5] Univ Paris Est Creteil, CNRS, Inst Chim & Mat Paris Est ICMPE, UMR 7182, F-94320 Thiais, France

关键词: Cyanate ester resins;    Nanoporous films;    Track-etched membranes;    Nuclear technologies;    Structure-property relationships;    Gas transport properties;   

DOI  :  10.1016/j.polymer.2021.123831

来源: Elsevier

【 摘 要 】

Thermally stable nanoporous polymer films have been created as promising materials for membrane technologies. Thermosetting Cyanate Ester Resins (CERs) and linear polyurethane (LPU) were combined by stepwise thermal curing, and the films of resulting hybrid polymers were irradiated with alpha-particles followed by chemical etching. Well-defined highly regular nanoporous structures were developed in the films as evidenced by using SEM. No significant changes in chemical structure of the polymer systems obtained after alpha-irradiation were observed by FTIR spectroscopy measurements. The polymer films obtained on the basis of hybrid networks with the CER/LPU composition equal to 90/10 wt% had quite narrow pore diameter distribution with average pore diameters around 12 nm. DSC and TGA measurements showed that the thermal characteristics of the nanoporous films were sufficiently high (Tg - 167-199 degrees;C, Td5% - 293-359 degrees C, and Td max - 429-457 degrees C). The CER/LPU nanoporous thermosetting materials demonstrated effective gas transport properties tested with gases, such as 02, C02, N2, and CH4. The combination of an additional sensitization step using gamma-rays and longer time of chemical etching improved the properties of the nanoporous systems developed. Such materials open the way to numerous applications, for example, as ultrafiltration membranes for advanced technologies, especially under extreme conditions.

【 授权许可】

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