Detection and Visualization of Minor Irradiation-Induced Changes in Polytetrafluoroethylene (PTFE) by Raman Spectroscopy.

IF 2.2 3区 化学 Q2 INSTRUMENTS & INSTRUMENTATION
Applied Spectroscopy Pub Date : 2024-11-01 Epub Date: 2024-08-21 DOI:10.1177/00037028241268210
Galina G Ryzhkova, Vladimir T Volkov, Vitaly I Korepanov
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引用次数: 0

Abstract

Exposure of polytetrafluoroethylene (PTFE) to argon plasma results in chemical modification of the polymer near the surface. Interestingly, PTFE modification can be induced by the sub-band gap ultraviolet (UV) irradiation. In the latter case, the changes in the chemical structure are very subtle, and they are practically invisible to conventional experimental techniques. Raman spectra of irradiated and raw samples show practically identical peaks. However, the baseline that is commonly considered as an unwanted spectral component contains an important information that reflects the minor structural changes. With the proper data analysis, this allows us to visualize the effects of the argon plasma and sub-band gap UV irradiation on the polymer.

EXPRESS:利用拉曼光谱对聚四氟乙烯(PTFE)中由辐照引起的微小变化进行检测和可视化。
将聚四氟乙烯暴露在氩等离子体中会导致聚合物表面附近发生化学改性。有趣的是,亚带隙紫外线也能诱导聚四氟乙烯改性。在后一种情况下,化学结构的变化非常微妙,传统的实验技术几乎无法看到。经过辐照的样品和未经过辐照的样品的拉曼光谱显示出几乎相同的峰值。然而,通常被视为无用光谱成分的基线却包含了反映微小结构变化的重要信息。通过适当的数据分析,我们可以直观地看到氩等离子体和亚带隙紫外线辐照对聚合物的影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Applied Spectroscopy
Applied Spectroscopy 工程技术-光谱学
CiteScore
6.60
自引率
5.70%
发文量
139
审稿时长
3.5 months
期刊介绍: Applied Spectroscopy is one of the world''s leading spectroscopy journals, publishing high-quality peer-reviewed articles, both fundamental and applied, covering all aspects of spectroscopy. Established in 1951, the journal is owned by the Society for Applied Spectroscopy and is published monthly. The journal is dedicated to fulfilling the mission of the Society to “…advance and disseminate knowledge and information concerning the art and science of spectroscopy and other allied sciences.”
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