Klempová Simona, Oravec Michal, Vizárová Katarína
Institute of Natural and Synthetic Polymers, Slovak University of Technology in Bratislava, Radlinského 9, 812 37 Bratislava, Slovak Republic.
Slovak National Gallery, Riečna 1, 815 13 Bratislava, Slovak Republic.
Spectrochim Acta A Mol Biomol Spectrosc. 2023 Jun 5;294:122541. doi: 10.1016/j.saa.2023.122541. Epub 2023 Feb 22.
The stability of plasticized poly (vinyl chloride) (PVC-P) stored under indoor conditions, despite it being in commercial use for more than 80 years, hasn't been sufficiently experimentally examined, as documented in available works on PVC-P stability. With the increasing number of actively deteriorating priceless modern and contemporary artworks made of PVC-P, there is a growing need for studies dealing with the analysis of changing characteristics of PVC-P during its aging under indoor conditions. This work addresses these issues by designing PVC-P formulations, drawing on the available information on technology of PVC production and PVC compounding from the last century, and analyzing the changes in the characteristic properties of model samples made from the designed PVC-P formulations exposed to accelerated UV-Vis and thermal aging using UV-Vis, ATR-FTIR and Raman spectroscopy. The results of our study further expand the knowledge regarding the stability of PVC-P and the benefits of using non-destructive, non-invasive spectroscopic methods of analysis for monitoring changes in PVC-P characteristic properties induced by aging.
尽管增塑聚氯乙烯（PVC-P）已商业化使用80多年，但室内条件下储存的PVC-P的稳定性尚未得到充分的实验研究，现有关于PVC-P稳定性的文献已有记载。随着由PVC-P制成的、日益恶化的珍贵现代和当代艺术品数量的增加，越来越需要开展研究，分析室内条件下PVC-P老化过程中其特性的变化。本研究通过设计PVC-P配方来解决这些问题，借鉴了上世纪PVC生产和PVC配混技术的现有信息，并使用紫外可见光谱、衰减全反射傅里叶变换红外光谱和拉曼光谱，分析了由设计的PVC-P配方制成的模型样品在加速紫外可见和热老化条件下特性的变化。我们的研究结果进一步拓展了关于PVC-P稳定性的知识，以及使用无损、非侵入性光谱分析方法监测老化引起的PVC-P特性变化的益处。
