Publication: Synthesis and characterization of interpenetrating network (IPN) based levan-polyacrylamide hydrogels and their application in conservation of cultural heritage
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Date
2023-11-01
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Abstract
In this study, an IPN based enzymatic levan-polyacrylamide hydrogel (EL-PA) was developed and characterized for its structural, morphological, rheological properties and swelling kinetics to underline hydrogel
properties and its potential use in paper conservation. The addition of levan also led to changes in the
viscoelastic behavior of the hydrogels, with the complex viscosity of EL-PA samples showing pronounced
dependence on shear rate. The swelling and the overall surface area of the hydrogels were increased with
the addition of levan into the polymer network. Source associated structural differences were found to
be negligible such that both microbially produced linear and enzymatically produced branched forms of
levan performed equally well. Solvent loaded hydrogels were then applied on an artifact, a 19th century
book of Namık Kemal, and investigated using FTIR, SEM, XRD and colorimetric analysis. Old adhesive layers were successfully removed, and hydrogels showed good compatibility and ease of application. This
study has shown that levan has improved hydrogel properties and levan based systems bear high potential in conservation science.
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Keywords
Metalurji ve Malzeme Mühendisliği, Malzeme Bilimi ve Mühendisliği, Polimerik Malzemeler, Biyomalzemeler, Malzeme Karakterizasyonu, Mühendislik ve Teknoloji, Metallurgical and Materials Engineering, Material science and engineering, Polymeric Materials, Biomaterials, Material Characterization, Engineering and Technology, Mühendislik, Bilişim ve Teknoloji (ENG), Malzeme Bilimi, METALURJİ VE METALURJİ MÜHENDİSLİĞİ, Engineering, Computing & Technology (ENG), MATERIALS SCIENCE, METALLURGY & METALLURGICAL ENGINEERING, Levan, Hydrogel, IPN, Polyacrylamide, Cultural heritage
Citation
Özen Sağlam R., Ünal Yıldırım S., Oktar F. N., Genç S., Erdem G., Toksoy Öner E., "Synthesis and characterization of interpenetrating network (IPN) based levan-polyacrylamide hydrogels and their application in conservation of cultural heritage", JOURNAL OF CULTURAL HERITAGE, cilt.64, ss.255-265, 2023