| Mass spectrometric techniques for characterizing low-molecular-weight resins used as paint varnishes. | |
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MedLine Citation:
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PMID: 23151653 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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The molecular structure of three low-molecular-weight resins used as paint varnishes has been characterized by use of an approach based on three different mass spectrometric techniques. We investigated the ketone resin MS2A, the aldehyde resin Laropal A81, and the hydrocarbon resin Regalrez 1094, now commonly used in restoration. To date, the molecular structures of these resins have not been completely elucidated. To improve current knowledge of the chemical composition of these materials, information obtained by gas chromatography-mass spectrometry (GC/MS), pyrolysis-gas chromatography-mass spectrometry (Py/GC/MS), and electrospray ionization mass spectrometry (ESI-Q-ToF) was combined. Analysis, in solution, of the whole polymeric fraction of the resins by flow-injection ESI-Q-ToF, and of the non-polymeric fraction by GC-MS, enabled us to identify previously unreported features of the polymer structures. In addition, the Py-GC/MS profiles that we obtained will help to enhance the databases currently available in the literature. The proposed approach can be extended to other low-molecular-weight resins used as varnishes in conservation. |
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Authors:
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I Bonaduce; M P Colombini; I Degano; F Di Girolamo; J La Nasa; F Modugno; S Orsini |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-11-14 |
Journal Detail:
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Title: Analytical and bioanalytical chemistry Volume: - ISSN: 1618-2650 ISO Abbreviation: Anal Bioanal Chem Publication Date: 2012 Nov |
Date Detail:
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Created Date: 2012-11-15 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101134327 Medline TA: Anal Bioanal Chem Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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Department of Chemistry and Industrial Chemistry, University of Pisa, via Risorgimento 35, 56126, Pisa, Italy. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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