Title: MODIFICATION OF EAPC-XYL BY PSEUDOMONAS
LIPASES BACTERIA TO REMOVE ACRYLIC FROM THE MURAL OIL PAINTINGS
Author(s): Abeer F. ELHAGRASSY
Journal: SHEDET(Annual Peer-Reviewed Journal Issued
By The Faculty Of Archaeology, Fayoum University)
Issue: 6 Date: 2019
Pages: 189-202
Cite as: Abeer F. ELHAGRASSY(2019).MODIFICATION OF
EAPC-XYL BY PSEUDOMONAS LIPASES BACTERIA TO REMOVE ACRYLIC FROM THE MURAL OIL
PAINTINGS.SHEDET(Annual Peer-Reviewed Journal Issued By The Faculty Of
Archaeology, Fayoum University), 6 (2019) pp. 189-202.10.36816/shedet.006.10
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MODIFICATION OF EAPC-XYL BY PSEUDOMONAS LIPASES BACTERIA TO REMOVE ACRYLIC FROM
THE MURAL OIL PAINTINGS
Abeer F. ELHAGRASSY
10.36816/shedet.006.10
This paper focuses on the removal of acrylic polymer layers from the surfaces of
mural paintings, as one of the serious problems faced by conservators.
Nanostructured fluids containing water is a great solution for the immiscible or
partially miscible polymer with water. The de-wetting of the polymer layer is
usually an essential step to achieve efficient removal. EAPC-XYL system was
often used for the removal of paraloid B72 but unfortunately, it has an effect
on the noble patina of the pigments. The addition of Pseudomonas stutzeri as a
source of lipase enzyme increases the efficiency of the EAPC-XYL in short time
which helps in removing of the acrylic polymers without affecting the pigments.
The examination by SEM showed that the applying EAPC-XYL/ Pseudomonas stutzeri
for only one hour has the effect of removing the polymer’s layers from the mural
paintings without affecting the pigments. The FTIR analysis after application
showed that the functional groups of the binding medium of the mural paintings
is absence of paraloid B72.
KEYWORDS
Nano-emulsions, Acrylic polymer, cleaning, oil wall paintings,
conservation, Pseudomonasstutzeri