Analysis of adhesives used on the Melbourne University Cypriot pottery Collection using a portable FTIR-ATR analyzer

Nel, Petronella; Lonetti, C.; Lau, D.; Tam, K.; Sloggett, Robyn

doi:10.1016/j.vibspec.2010.01.005

Cited by 15 publications

(26 citation statements)

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“…It is a minimally invasive technique, via which polymer families can be accurately identified. This information has the potential to aid the conservation management of polymers in collection contexts and inform broader conservation and/or collection management practices [24].…”

Section: Identificationmentioning

confidence: 99%

“…Such samples provide a context from which to historically study adhesives, adhesive formulation and polymer degradation and to map changes in conservation practice in the selection and application of these materials. A FTIR-ATR spectroscopic identification survey of adhesives in the Cypriot pottery collection by Nel et al [24] found approximately two-thirds of repairs are composed of CN. It is identified by the characteristic IR peaks of the nitrate group, observed as asymmetric and symmetric stretches at approximately 1634 and 1278 cm −1 respectively [25,26].…”

Section: Identificationmentioning

confidence: 99%

“…These were excavated and acquired in Cyprus in the 1930s and 1960s and transported to Australia primarily by University of Sydney archaeologist Professor JR Stewart [29,30]. This collection was acquired by The University of Melbourne over two accession periods: in 1972 for its official sponsorship of excavation activities [24,31]; and subsequently, with the 1987 purchase of over 200 objects from the Australian Institute of Archaeology, supplementing and enhancing the existing sequence of material culture [32]. As previously described the collection of 382 objects includes approximately 350 ceramic artefacts [24].…”

Section: The Cypriot Pottery Collectionmentioning

confidence: 99%

“…This collection was acquired by The University of Melbourne over two accession periods: in 1972 for its official sponsorship of excavation activities [24,31]; and subsequently, with the 1987 purchase of over 200 objects from the Australian Institute of Archaeology, supplementing and enhancing the existing sequence of material culture [32]. As previously described the collection of 382 objects includes approximately 350 ceramic artefacts [24]. As summarized in Table 2, artefacts were primarily excavated from known sites: the first 1972 acquisition comprises excavations from Ayai Paraskevi (1955)(1956), Lapatsa andPalealona (1960-1961) and the second 1987 acquisition consists of Vounous (1937Vounous ( -1938 and Stephania (1951).…”

Section: The Cypriot Pottery Collectionmentioning

confidence: 99%

“…As summarized in Table 2, artefacts were primarily excavated from known sites: the first 1972 acquisition comprises excavations from Ayai Paraskevi (1955)(1956), Lapatsa andPalealona (1960-1961) and the second 1987 acquisition consists of Vounous (1937Vounous ( -1938 and Stephania (1951). A further eight were excavated at minor sites (Sphageion, Ayios Iakovo, Pano Dikomo, and Rizokarpas) and the provenance for the remaining items are unknown [24] as denoted by 0000.XXXX accession numbers. Previously 143 (37%) of the 384 pottery vessels in the Cypriot pottery collection were found by Nel et al [24], to contain adhesive repairs.…”

Section: The Cypriot Pottery Collectionmentioning

confidence: 99%

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Identification of cellulose nitrate based adhesive repairs in archaeological pottery of the University of Melbourne’s Middle Eastern archaeological pottery collection using portable FTIR-ATR spectroscopy and PCA

2017

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A previous study of the Cypriot pottery collection housed in the Ian Potter Museum of Art at the University of Melbourne found approximately two-thirds of adhesive repairs are primarily composed of cellulose nitrate (CN). This is of concern as CN has a limited lifespan (6-20 years), which has implications for the strategic management of the collection. To gain a greater understanding of the prevalence of CN based adhesive repairs in the archaeological context, the original FTIR-ATR spectroscopic survey was extended to incorporate the University's Middle Eastern archaeological pottery collection. Micro-samples were removed from artefacts using acetone swabs. Analysis of adhesive FTIR spectra identified CN to be present not only as the primary polymer in approximately one-tenth of repairs, but also as a secondary polymer in poly(vinyl acetate) (PVAc) and acrylic adhesive formulations, observed as a weak peak at ~1656 cm −1 . CN's secondary presence in PVAc adhesive formulations is demonstrated using principal component analysis (PCA) and the diphenylamine spot test for CN. Re-analysis of adhesive IR spectra from the Cypriot pottery collection found CN to be present as a secondary polymer in this collection as well. It is concluded a combined methodology of collecting and identifying FTIR-ATR spectra of adhesive repairs from archaeological pottery collections followed by PCA analysis bring to light adhesive formulations which can inform the management of pottery collections.

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Section: Identificationmentioning

confidence: 99%

Section: Identificationmentioning

confidence: 99%