Thermal characterization of new, artificially aged and historical leather and parchment

Zoltán Sebestyén, Z. Czégény, Elena Badea, Cristina Carsote, Claudiu Şendrea, Eszter Barta-Rajnai, János Bozi, Lucretia Miu, E. Jakab

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

The aging mechanism of leather and parchment was studied by thermoanalytical methods to understand the effect of the environment on the historical manuscripts and the heritage of libraries and archives. Alkaline and acidic treatments followed by thermal dehydration were applied to achieve chemical changes in the structure of new leather and parchment similar to the slow natural aging of historical samples. Chemical and structural changes during both natural and artificial aging processes were characterized by thermoanalytical techniques. The thermal stability and the evolution profile of the decomposition products under slow heating were studied by thermogravimetry/mass spectrometry (TG/MS). The distribution of the decomposition products of these collagen-based materials under fast pyrolysis was characterized by pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS). It was found that the maximal rate of the thermal decomposition (DTGmax) significantly decreases by aging in case of both leather and parchment samples indicating the degree of deterioration. Py-GC/MS has been found to be a suitable technique to sensitively monitor the degradation of the polyphenolic components of the vegetable tannins under natural or artificial aging. It was established that the tannin content of leather is more significantly affected by natural aging and alkaline treatment than the main structure of the polypeptide chains. Principal component analysis (PCA) has been used to find statistical correlations between the experimental data for leather samples. The results of the PCA confirmed that the alkaline treatment and the natural aging processes similarly modify the tannin content of the vegetable tanned leather.

Original languageEnglish
Pages (from-to)419-427
Number of pages9
JournalJournal of Analytical and Applied Pyrolysis
Volume115
DOIs
Publication statusPublished - Sep 1 2015

Fingerprint

Leather
Aging of materials
Tannins
Pyrolysis
Mass spectrometry
Vegetables
Gas chromatography
Principal component analysis
Decomposition
Polypeptides
Hot Temperature
Dehydration
Collagen
Deterioration
Thermogravimetric analysis
Thermodynamic stability
Heating
Degradation
Peptides

Keywords

  • Artificial and natural aging
  • Leather
  • Parchment
  • Principal component analysis
  • Py-GC/MS
  • TG/MS
  • Vegetable tannins

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Chemistry(all)

Cite this

Thermal characterization of new, artificially aged and historical leather and parchment. / Sebestyén, Zoltán; Czégény, Z.; Badea, Elena; Carsote, Cristina; Şendrea, Claudiu; Barta-Rajnai, Eszter; Bozi, János; Miu, Lucretia; Jakab, E.

In: Journal of Analytical and Applied Pyrolysis, Vol. 115, 01.09.2015, p. 419-427.

Research output: Contribution to journalArticle

Sebestyén, Zoltán ; Czégény, Z. ; Badea, Elena ; Carsote, Cristina ; Şendrea, Claudiu ; Barta-Rajnai, Eszter ; Bozi, János ; Miu, Lucretia ; Jakab, E. / Thermal characterization of new, artificially aged and historical leather and parchment. In: Journal of Analytical and Applied Pyrolysis. 2015 ; Vol. 115. pp. 419-427.
@article{ead5e257dbfc46b8b6181fb460726175,
title = "Thermal characterization of new, artificially aged and historical leather and parchment",
abstract = "The aging mechanism of leather and parchment was studied by thermoanalytical methods to understand the effect of the environment on the historical manuscripts and the heritage of libraries and archives. Alkaline and acidic treatments followed by thermal dehydration were applied to achieve chemical changes in the structure of new leather and parchment similar to the slow natural aging of historical samples. Chemical and structural changes during both natural and artificial aging processes were characterized by thermoanalytical techniques. The thermal stability and the evolution profile of the decomposition products under slow heating were studied by thermogravimetry/mass spectrometry (TG/MS). The distribution of the decomposition products of these collagen-based materials under fast pyrolysis was characterized by pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS). It was found that the maximal rate of the thermal decomposition (DTGmax) significantly decreases by aging in case of both leather and parchment samples indicating the degree of deterioration. Py-GC/MS has been found to be a suitable technique to sensitively monitor the degradation of the polyphenolic components of the vegetable tannins under natural or artificial aging. It was established that the tannin content of leather is more significantly affected by natural aging and alkaline treatment than the main structure of the polypeptide chains. Principal component analysis (PCA) has been used to find statistical correlations between the experimental data for leather samples. The results of the PCA confirmed that the alkaline treatment and the natural aging processes similarly modify the tannin content of the vegetable tanned leather.",
keywords = "Artificial and natural aging, Leather, Parchment, Principal component analysis, Py-GC/MS, TG/MS, Vegetable tannins",
author = "Zolt{\'a}n Sebesty{\'e}n and Z. Cz{\'e}g{\'e}ny and Elena Badea and Cristina Carsote and Claudiu Şendrea and Eszter Barta-Rajnai and J{\'a}nos Bozi and Lucretia Miu and E. Jakab",
year = "2015",
month = "9",
day = "1",
doi = "10.1016/j.jaap.2015.08.022",
language = "English",
volume = "115",
pages = "419--427",
journal = "Journal of Analytical and Applied Pyrolysis",
issn = "0165-2370",
publisher = "Elsevier",

}

TY - JOUR

T1 - Thermal characterization of new, artificially aged and historical leather and parchment

AU - Sebestyén, Zoltán

AU - Czégény, Z.

AU - Badea, Elena

AU - Carsote, Cristina

AU - Şendrea, Claudiu

AU - Barta-Rajnai, Eszter

AU - Bozi, János

AU - Miu, Lucretia

AU - Jakab, E.

PY - 2015/9/1

Y1 - 2015/9/1

N2 - The aging mechanism of leather and parchment was studied by thermoanalytical methods to understand the effect of the environment on the historical manuscripts and the heritage of libraries and archives. Alkaline and acidic treatments followed by thermal dehydration were applied to achieve chemical changes in the structure of new leather and parchment similar to the slow natural aging of historical samples. Chemical and structural changes during both natural and artificial aging processes were characterized by thermoanalytical techniques. The thermal stability and the evolution profile of the decomposition products under slow heating were studied by thermogravimetry/mass spectrometry (TG/MS). The distribution of the decomposition products of these collagen-based materials under fast pyrolysis was characterized by pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS). It was found that the maximal rate of the thermal decomposition (DTGmax) significantly decreases by aging in case of both leather and parchment samples indicating the degree of deterioration. Py-GC/MS has been found to be a suitable technique to sensitively monitor the degradation of the polyphenolic components of the vegetable tannins under natural or artificial aging. It was established that the tannin content of leather is more significantly affected by natural aging and alkaline treatment than the main structure of the polypeptide chains. Principal component analysis (PCA) has been used to find statistical correlations between the experimental data for leather samples. The results of the PCA confirmed that the alkaline treatment and the natural aging processes similarly modify the tannin content of the vegetable tanned leather.

AB - The aging mechanism of leather and parchment was studied by thermoanalytical methods to understand the effect of the environment on the historical manuscripts and the heritage of libraries and archives. Alkaline and acidic treatments followed by thermal dehydration were applied to achieve chemical changes in the structure of new leather and parchment similar to the slow natural aging of historical samples. Chemical and structural changes during both natural and artificial aging processes were characterized by thermoanalytical techniques. The thermal stability and the evolution profile of the decomposition products under slow heating were studied by thermogravimetry/mass spectrometry (TG/MS). The distribution of the decomposition products of these collagen-based materials under fast pyrolysis was characterized by pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS). It was found that the maximal rate of the thermal decomposition (DTGmax) significantly decreases by aging in case of both leather and parchment samples indicating the degree of deterioration. Py-GC/MS has been found to be a suitable technique to sensitively monitor the degradation of the polyphenolic components of the vegetable tannins under natural or artificial aging. It was established that the tannin content of leather is more significantly affected by natural aging and alkaline treatment than the main structure of the polypeptide chains. Principal component analysis (PCA) has been used to find statistical correlations between the experimental data for leather samples. The results of the PCA confirmed that the alkaline treatment and the natural aging processes similarly modify the tannin content of the vegetable tanned leather.

KW - Artificial and natural aging

KW - Leather

KW - Parchment

KW - Principal component analysis

KW - Py-GC/MS

KW - TG/MS

KW - Vegetable tannins

UR - http://www.scopus.com/inward/record.url?scp=84942296460&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84942296460&partnerID=8YFLogxK

U2 - 10.1016/j.jaap.2015.08.022

DO - 10.1016/j.jaap.2015.08.022

M3 - Article

AN - SCOPUS:84942296460

VL - 115

SP - 419

EP - 427

JO - Journal of Analytical and Applied Pyrolysis

JF - Journal of Analytical and Applied Pyrolysis

SN - 0165-2370

ER -