FTIR-ATR Analysis, Curve Fitting of Rigid PVC Tube Used in Industrial Areas
- DOI
- 10.2991/aisr.k.220201.024How to use a DOI?
- Keywords
- rigid PVC tube; thermal aging; glass transition; infrared analysis
- Abstract
The purpose of this study is to determine the effect of high temperatures on rigid PVC tubes used in industrial areas that the release of very hot fluids is prevalent. Three different aging protocols (T=80 °C, T= 100 °C, and T=120 °C) were performed for 90 days at temperatures near and above the glass transition temperature.
It appeared that these temperatures increased the structural changes and modified the chemical structure of rigid PVC tube. Indeed, the infrared analysis revealed the formation of a significant amount of oxidation products (conjugated and isolated ketones, esters) during aging due to the oxidation and chain scission reactions. The propagation of polyene sequences was more critical in the 120 °C aging protocol than other protocols. These sequences almost certainly played a role in forming new chemical bonds via the bimolecular interaction of in-chain radicals, which resulted in crosslinking. On the other hand, the crosslinking and chain scission reactions are alternatively more important for the sample aged at 100 °C. During the first and last 30 days of aging, the conjugated double bonds increased indicating that crosslinking reactions occurred. While the oxidation products developed till 60 days of aging, showing that the chain scissions are more important during this final period. At 80 °C, the chain scission reactions are more effective in the first 30 days of aging while the crosslinking reactions became more important just after 30 days. Moreover, the stabilization mechanism provided by the stabilizing system is also affected by the aging temperature.
- Copyright
- © 2022 The Authors. Published by Atlantis Press International B.V.
- Open Access
- This is an open access article under the CC BY-NC license.
Cite this article
TY - CONF AU - Zineb Hadj amar AU - Salem fouad Chabira AU - Mohamed Sebaa PY - 2022 DA - 2022/02/02 TI - FTIR-ATR Analysis, Curve Fitting of Rigid PVC Tube Used in Industrial Areas BT - Proceedings of the 2nd International Conference on Industry 4.0 and Artificial Intelligence (ICIAI 2021) PB - Atlantis Press SP - 132 EP - 137 SN - 1951-6851 UR - https://doi.org/10.2991/aisr.k.220201.024 DO - 10.2991/aisr.k.220201.024 ID - amar2022 ER -