Use of aluminium alkoxide and oxazolidine II to treat acid-deteriorated historic leather

Anne Lama, A Paula M Antunes, Anthony D Covington, Jeffry Guthrie-Strachan, Yvette Fletcher

Research output: Contribution to journalArticleResearchpeer-review

Abstract

This study was undertaken to develop a product that will potentially delay the progress of deterioration of acid-deteriorated historic leather. Acid-deteriorated leather samples were treated with a new formulation consisting of aluminium di(isopropoxide) acetoacetate ester chelate (aluminium alkoxide) and 5-ethyl-1-aza-3,7-dioxabicyclo[3.3.0]octane (oxazolidine II). The leather samples were also treated with oxazolidine II and aluminium alkoxide separately to compare the effectiveness of these reagents against the new formulation. Untreated leather samples were used as a negative control. Acid-deteriorated leather samples treated with Cellugel®, aluminium alkoxide and the new formulation along with corresponding untreated leather samples were also subjected to accelerated ageing in order to investigate the longevity of the treated leather. The impact of the treatments and accelerated ageing was determined by measuring the hydrothermal stability of the leather and pH of the aqueous extract. The formulation showed a potential to provide the acid-deteriorated historic leather with long-term protection against an artificially-created acidic environment.
Original languageEnglish
Pages (from-to)172-187
Number of pages16
JournalJournal of the Institute of Conservation
Volume38
Issue number2
Early online date21 Sep 2015
DOIs
Publication statusE-pub ahead of print - 21 Sep 2015

Fingerprint

Aluminum
Acids
Esters
oxazolidine

Keywords

  • Leather
  • conservation
  • acid deterioration
  • red rot
  • artificial ageing
  • shrinkage temperature

Cite this

Lama, Anne ; Antunes, A Paula M ; Covington, Anthony D ; Guthrie-Strachan, Jeffry ; Fletcher, Yvette. / Use of aluminium alkoxide and oxazolidine II to treat acid-deteriorated historic leather. In: Journal of the Institute of Conservation. 2015 ; Vol. 38, No. 2. pp. 172-187.
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abstract = "This study was undertaken to develop a product that will potentially delay the progress of deterioration of acid-deteriorated historic leather. Acid-deteriorated leather samples were treated with a new formulation consisting of aluminium di(isopropoxide) acetoacetate ester chelate (aluminium alkoxide) and 5-ethyl-1-aza-3,7-dioxabicyclo[3.3.0]octane (oxazolidine II). The leather samples were also treated with oxazolidine II and aluminium alkoxide separately to compare the effectiveness of these reagents against the new formulation. Untreated leather samples were used as a negative control. Acid-deteriorated leather samples treated with Cellugel{\circledR}, aluminium alkoxide and the new formulation along with corresponding untreated leather samples were also subjected to accelerated ageing in order to investigate the longevity of the treated leather. The impact of the treatments and accelerated ageing was determined by measuring the hydrothermal stability of the leather and pH of the aqueous extract. The formulation showed a potential to provide the acid-deteriorated historic leather with long-term protection against an artificially-created acidic environment.",
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Use of aluminium alkoxide and oxazolidine II to treat acid-deteriorated historic leather. / Lama, Anne; Antunes, A Paula M; Covington, Anthony D; Guthrie-Strachan, Jeffry; Fletcher, Yvette.

In: Journal of the Institute of Conservation, Vol. 38, No. 2, 21.09.2015, p. 172-187.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Use of aluminium alkoxide and oxazolidine II to treat acid-deteriorated historic leather

AU - Lama, Anne

AU - Antunes, A Paula M

AU - Covington, Anthony D

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AU - Fletcher, Yvette

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N2 - This study was undertaken to develop a product that will potentially delay the progress of deterioration of acid-deteriorated historic leather. Acid-deteriorated leather samples were treated with a new formulation consisting of aluminium di(isopropoxide) acetoacetate ester chelate (aluminium alkoxide) and 5-ethyl-1-aza-3,7-dioxabicyclo[3.3.0]octane (oxazolidine II). The leather samples were also treated with oxazolidine II and aluminium alkoxide separately to compare the effectiveness of these reagents against the new formulation. Untreated leather samples were used as a negative control. Acid-deteriorated leather samples treated with Cellugel®, aluminium alkoxide and the new formulation along with corresponding untreated leather samples were also subjected to accelerated ageing in order to investigate the longevity of the treated leather. The impact of the treatments and accelerated ageing was determined by measuring the hydrothermal stability of the leather and pH of the aqueous extract. The formulation showed a potential to provide the acid-deteriorated historic leather with long-term protection against an artificially-created acidic environment.

AB - This study was undertaken to develop a product that will potentially delay the progress of deterioration of acid-deteriorated historic leather. Acid-deteriorated leather samples were treated with a new formulation consisting of aluminium di(isopropoxide) acetoacetate ester chelate (aluminium alkoxide) and 5-ethyl-1-aza-3,7-dioxabicyclo[3.3.0]octane (oxazolidine II). The leather samples were also treated with oxazolidine II and aluminium alkoxide separately to compare the effectiveness of these reagents against the new formulation. Untreated leather samples were used as a negative control. Acid-deteriorated leather samples treated with Cellugel®, aluminium alkoxide and the new formulation along with corresponding untreated leather samples were also subjected to accelerated ageing in order to investigate the longevity of the treated leather. The impact of the treatments and accelerated ageing was determined by measuring the hydrothermal stability of the leather and pH of the aqueous extract. The formulation showed a potential to provide the acid-deteriorated historic leather with long-term protection against an artificially-created acidic environment.

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