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November 10, 2025Journal of Hazardous MaterialsOpen Access

A new experimental approach to chemical ageing in materials and piping for drinking water infrastructure exposed to chlorine dioxide

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Authors

MSMassimiliano SgroiNLNicola LancioniMPMarco Parlapiano

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Overview

Pilot tests reveal accelerated ageing in polyethylene pipes under ClO₂ exposure, impacting service life significantly.

Key Points

  • This research aims to evaluate the long-term durability of polyethylene pipes under chlorine dioxide conditions.
  • Investigated two grades of polyethylene (PE1 and PE2) in dynamic conditions
  • Conducted pilot-scale tests for chemical, microstructural, thermal, and mechanical degradation
  • Introduced a novel ageing protocol with macro- and micro-scale material characterization.
  • Significant increase in carbonyl index, especially in PE1 with a higher oxidation rate than PE2
  • Crystallinity increased by about 4% in PE1 and 2% in PE2
  • Mechanical performance declined, failing to meet standards after week 12, with reductions in elongation and ductility.

Cite This Study

Sgroi et al. (2025) studied this question.

synapsesocial.com/papers/69253a1ec0ce034ddc35708fhttps://doi.org/10.1016/j.jhazmat.2025.140437
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