| Naslov: | Stabilization of verdigris pigment on paper : evaluation of antioxidants under mild accelerated degradation conditions |
|---|
| Avtorji: | ID Malešič, Jasna (Avtor)
ID Retko, Klara (Avtor)
ID Finšgar, Matjaž (Avtor)
ID Kralj Cigić, Irena (Avtor) |
|---|
| Datoteke: |  https://chemistry-europe.onlinelibrary.wiley.com/doi/epdf/10.1002/cplu.202400670
|
|---|
| Jezik: | Angleški jezik |
|---|
| Vrsta gradiva: | Neznano |
|---|
| Tipologija: | 1.01 - Izvirni znanstveni članek |
|---|
| Organizacija: | FKKT - Fakulteta za kemijo in kemijsko tehnologijo
|
|---|
| Opis: | Copper-based pigments, such as verdigris, have caused severe damage to many important historical documents, and their preservation remains a significant concern for paper conservators and researchers. This study re-evaluates the efficacy of two promising antioxidants, tetrabutylammonium bromide (TBABr) and benzotriazole (BTA), as stabilization agents for paper documents containing verdigris pigment. The evaluation was conducted under mild accelerated degradation conditions using historically accurate mock-up paper samples. To assess the stability of the mock-up papers, various parameters were measured during accelerated degradation, including colour, molecular weight (Mw), and pH value. Size exclusion chromatography measurements of Mw confirmed that TBABr provided superior stabilization compared to BTA. Additionally, the total colour change was slightly more pronounced in the samples treated with BTA compared to those treated with TBABr. However, during degradation, some paper samples containing thicker application of pigment exhibited significant black and brown spots, regardless of treatment (untreated, treated with BTA, or TBABr). X-ray photoelectron spectroscopy confirmed the presence of both Cu(I) and Cu(II) oxidation states in all samples, with a higher Cu(II) content on the surface of TBABr treated samples compared to those treated with BTA. This may indicate differences in the mechanisms of degradation. Raman spectroscopy identified the spots on both untreated and TBABr-treated samples as copper(II) oxide. |
|---|
| Ključne besede: | verdigris, papir, razgradnja, stabilizacija, antioksidanti, ohranjanje dokumentov |
|---|
| Status publikacije: | Objavljeno |
|---|
| Verzija publikacije: | Objavljena publikacija |
|---|
| Poslano v recenzijo: | 22.10.2024 |
|---|
| Datum sprejetja članka: | 16.02.2025 |
|---|
| Datum objave: | 17.02.2025 |
|---|
| Leto izida: | 2025 |
|---|
| Št. strani: | 15 str. |
|---|
| Številčenje: | [article no.] ǂe202400670 |
|---|
| PID: | 20.500.12556/DKUM-92052  |
|---|
| UDK: | 7.025.3/.4:691.14 |
|---|
| COBISS.SI-ID: | 226885635 |
|---|
| DOI: | 10.1002/cplu.202400670 |
|---|
| ISSN pri članku: | 2192-6506 |
|---|
| Avtorske pravice: | © 2025 The Author(s) |
|---|
| Datum objave v DKUM: | 13.03.2025 |
|---|
| Število ogledov: | 152 |
|---|
| Število prenosov: | 5 |
|---|
| Metapodatki: |    |
|---|
| Področja: | Ostalo
|
|---|
|
:
|
Kopiraj citat |
|---|
| | | | Skupna ocena: | (0 glasov) |
|---|
| Vaša ocena: | Ocenjevanje je dovoljeno samo prijavljenim uporabnikom. |
|---|
| Objavi na: |  |
|---|
Postavite miškin kazalec na naslov za izpis povzetka. Klik na naslov izpiše
podrobnosti ali sproži prenos. |
