Poly(vinyl chloride) degradation : identification of acidic degradation products, their emission rates, and implications for heritage collections

Pok, Špela (avtor), Kralj Cigić, Irena (avtor), Strlič, Matija (avtor), Rijavec, Tjaša (avtor)

The degradation of poly(vinyl chloride) (PVC) is a potential risk to the objects themselves and their surroundings. In this work, we study the acidic emissions produced during the thermal degradation of PVC to assess their contribution to indoor pollution and to improve the understanding of hydrogen chloride (HCl) emissions. With surface emission experiments, we have shown that the process of HCl emissions exhibits a two-phase behaviour. Prediction of HCl emission rate at 25 °C and modelling the steady-state concentration of HCl in a museum storage box enabled us to conclude that PVC objects emit HCl at rates that are too low to significantly contribute to environmental pollution in heritage collections. However, we demonstrated significant formation of formic and acetic acid. The latter is likely the main acidic compound responsible for the negative impact in the paper Oddy test, observed for all the tested PVC materials.

• Jezik: Angleški jezik
• Ključne besede: PVC, dehydrochlorination, box model, pollution, air quality, prediction, heritage science
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FKKT - Fakulteta za kemijo in kemijsko tehnologijo
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2025
• Št. strani: 8 str.
• Številčenje: Vol. 13, art. 382
• PID: 20.500.12556/RUL-171275
• UDK: 678.743.2:7.025:543.2/.9
• ISSN pri članku: 3059-3220
• DOI: 10.1038/s40494-025-01955-w
• COBISS.SI-ID: 246229507
• Datum objave v RUL: 22.08.2025

Gradivo je del revije

• Naslov: Npj heritage science
• Skrajšan naslov: npj herit. sci.
• Založnik: Nature Portfolio
• ISSN: 3059-3220
• COBISS.SI-ID: 237419523

Licence

• Licenca: CC BY-NC-ND 4.0, Creative Commons Priznanje avtorstva-Nekomercialno-Brez predelav 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by-nc-nd/4.0/deed.sl
• Opis: Najbolj omejujoča licenca Creative Commons. Uporabniki lahko prenesejo in delijo delo v nekomercialne namene in ga ne smejo uporabiti za nobene druge namene.

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: PVC, dehidroklorinacija, model škatle, onesnaženje, kvaliteta zraka, napoved, dediščinska znanost