Moskvitin Lev Vladimirovich, Koshkina Ol'ga Alekseevna, Slesarenko Sergei Vital'evich, Arsentyev Mikhail Aleksandrovich, Trakhtenberg Leonid Izrailevich, Ryndya Sergei Mikhailovich, Magomedbekov Eldar Parpachevich, Smolyanskii Alexander Sergeevich
High Energy Chemistry and Radioecology Department, D. Mendeleev University of Chemical Technology of Russia, Moscow 125047, Russia.
Technology Department, Quantum R LLC, Moscow 125319, Russia.
Membranes (Basel). 2023 Jan 12;13(1):101. doi: 10.3390/membranes13010101.
A study of the properties of thermoradiationally modified polytetrafluoroethylene and its importance for use as the basis of polymer membranes is presented. The hydrogen permeability of a TRM-PTFE film was studied in comparison with an original PTFE film, and showed a three-fold decrease in hydrogen permeability. Further, TRM-PTFE films were irradiated with accelerated Xe ions with an energy of 1 MeV with fluences from 1 × 10 to 1 × 10. The changes induced by ion treatment were analyzed by infrared spectroscopy of disturbed total internal reflection (IR-ATR) and by atomic force microscopy (ASM). IR-ATR indicated the absence of destruction in the fluence range from 1 × 10 to 3 × 10 cm (in the area of isolated tracks) and the beginning of overlap of latent tracks on fluences from 3 × 10 to 1 × 10 cm. Topographic images with AFM showed layered lamellar structures that collapsed at a fluence of 10 cm. The destruction was accompanied by a decrease in roughness about seven times the size of the track core observed by the ASM method, fully corresponding to the value obtained on the basis of calculations using modeling in an SRIM program.
本文介绍了热辐射改性聚四氟乙烯的性能研究及其作为聚合物膜基础材料的重要性。将热辐射改性聚四氟乙烯(TRM-PTFE)薄膜与原始聚四氟乙烯(PTFE)薄膜进行比较,研究了其氢渗透率,结果表明氢渗透率降低了三倍。此外,用能量为1兆电子伏、注量从1×10到1×10的加速氙离子辐照TRM-PTFE薄膜。通过受扰全内反射红外光谱(IR-ATR)和原子力显微镜(ASM)分析了离子处理引起的变化。IR-ATR表明,在注量范围为1×10至3×10厘米(在孤立径迹区域)时没有破坏,而在注量从3×10至1×10厘米时,潜径迹开始重叠。原子力显微镜的形貌图像显示了层状片层结构,在注量为10厘米时塌陷。破坏伴随着粗糙度的降低,约为原子力显微镜法观察到的径迹核心尺寸的七倍,这与基于SRIM程序建模计算得到的值完全相符。