Influence of Gamma Irradiation on the Surface Energy Characteristics and Wetting of Polytetrafluoroethylene

Autor:	I. F. Shaimukhametova, Sergei Demidov, S. A. Bogdanova, Sadulla R. Allayarov
Rok vydání:	2021
Předmět:	chemistry.chemical_compound Polytetrafluoroethylene Chemical engineering Pulmonary surfactant Chemistry Free surface Adhesion Surface layer Irradiation Wetting Physical and Theoretical Chemistry Surface energy
Zdroj:	High Energy Chemistry. 55:381-387
ISSN:	1608-3148 0018-1439
DOI:	10.1134/s001814392105009x
Popis:	The effect of γ-radiation dose on the surface energy characteristics of commercial polytetrafluoroethylene (PTFE) of five different grades has been studied. In the course of PTFE irradiation in air, radiation oxidation leads to the appearance of functional groups and an increase in the acid–base component of the free surface energy and surface polarity; in this case, the dispersive component of the free surface energy decreases with dose because of the radiation-induced loosening, amorphization, and degradation of the polymer. The effect of γ-irradiation of PTFE on its wetting with aqueous solutions of the anionic surfactant sodium dodecyl sulfate has been studied for the first time. It has been found that irradiation increases the wetting and the work of adhesion of the surfactant solution due to the appearance of polar groups in the surface layer.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::99a12ba7bb444c2ad3d040dc2fecaf70 https://doi.org/10.1134/s001814392105009x Zobrazit plný text záznamu Plný text ve formátu PDF