Influence of atmospheric pollutants on the natural and artificial aging of rigid poly(vinyl chloride)

The natural aging of rigid poly(vinyl chloride) (PVC) used in building and construction areas has been studied. Bars of PVC exposed in Algiers, where the concentrations of atmospheric pollutants (NO x , O 3 , hydrocarbons) are known, show a small drop in strain at break and stress at break, whereas...

Full description

Saved in:
Bibliographic Details
Published in:Journal of vinyl & additive technology 2002-03, Vol.8 (1), p.45-54
Main Author: Belhaneche-Bensemra, Naïma
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The natural aging of rigid poly(vinyl chloride) (PVC) used in building and construction areas has been studied. Bars of PVC exposed in Algiers, where the concentrations of atmospheric pollutants (NO x , O 3 , hydrocarbons) are known, show a small drop in strain at break and stress at break, whereas hardness remains practically constant. Analysis by IR and UV‐visible spectroscopy shows the appearance of chemical structures due to polymer degradation (carbonyl groups, hydroperoxide groups, and polyenes) after the first months of exposure at three sites. It seems that O 3 exerted the most deleterious effect, followed by hydrocarbons and then by NO x . An artificial aging test was carried out to investigate the effect of O 3 on the degradation of PVC, and the results were compared to those from outdoor aging.
ISSN:1083-5601
1548-0585
DOI:10.1002/vnl.10344