Thermal aging effects on the microstructure of rigid PVC tubes used for water transportation in sub-Saharan region

This paper reports on experiments carried out to highlight the effect of thermal aging on the microstructure of (u-PVC) tube used for freshwater transportation in sub-Saharan region. Two thermal aging protocols the both of 90 days were performed on the (u-PVC) specimens, at respectively 50 and 60 °C...

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Bibliographic Details
Published inMaterials today : proceedings Vol. 49; pp. 1035 - 1040
Main Authors Hadj amar, Zineb, Chabira, Salem Fouad, Sebaa, Mohamed
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 2022
Subjects
(u-PVC) tube
Curve-fitting
DSC
FTIR
Stabilizer system
Thermal aging
Stabilizer system
(u-PVC) tube
Curve-fitting
Thermal aging
DSC
FTIR
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Summary:This paper reports on experiments carried out to highlight the effect of thermal aging on the microstructure of (u-PVC) tube used for freshwater transportation in sub-Saharan region. Two thermal aging protocols the both of 90 days were performed on the (u-PVC) specimens, at respectively 50 and 60 °C. The structural changes undergone by the (u-PVC) were monitored by FTIR-spectroscopy. It has been found that dehydrochlorination is the major event of the aging process. However, the stabilizer system played a key role in HCl-scavenging and chlorine atoms substitution. The aging temperature increased the kinetic of the oxidation reactions but also the stabilizer consumption. Chain scission reactions and structural changes were revealed by DSC-analysis.
ISSN:2214-7853
2214-7853
DOI:10.1016/j.matpr.2021.09.025