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Violin Varnishes: Microstructure and Nanomechanical Analysis

Odlyha, Marianne; Lucejko, Jeannette J; Lluveras-Tenorio, Anna; di Girolamo, Francesca; Hudziak, Stephen; Strange, Adam; Bridarolli, Alexandra; ... Colombini, Maria Perla; + view all (2022) Violin Varnishes: Microstructure and Nanomechanical Analysis. Molecules , 27 (19) , Article 6378. 10.3390/molecules27196378. Green open access

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Abstract

The aim of the current work is twofold: to demonstrate the application of in situ non-invasive imaging by portable atomic force microscopy (AFM) on the surfaces of a violin and to integrate compositional and mechanical analysis at the nano scale level on model samples of varnished wood. These samples were prepared according to traditional recipes by an Italian lute-maker family well practised in the art. Samples of oil and spirit-based varnishes on maple wood, naturally and accelerated light aged, were studied. AFM was used to measure the nanomechanical properties of the model samples and established that the spirit-based varnish was stiffer than the oil-based. Synchrotron radiation micro- Fourier Transform Infra-red analysis of the layer structure revealed that stiffer spirit-based varnish showed less penetration into the wood than the oil-based. Further PeakForce Quantitative Nanomechanical Mapping (QNM) demonstrated a difference in adhesion values between the oil- and spirit-based samples.

Type: Article
Title: Violin Varnishes: Microstructure and Nanomechanical Analysis
Location: Switzerland
Open access status: An open access version is available from UCL Discovery
DOI: 10.3390/molecules27196378
Publisher version: https://doi.org/10.3390/molecules27196378
Language: English
Additional information: This work is licensed under a Creative Commons License. The images or other third-party material in this article are included in the Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
Keywords: Science & Technology, Life Sciences & Biomedicine, Physical Sciences, Biochemistry & Molecular Biology, Chemistry, Multidisciplinary, Chemistry, in situ imaging, AFM, SR micro-FTIR, violin, nanomechanics, HISTORICAL MUSICAL-INSTRUMENTS, WOOD, REFLECTION, MODULUS, FTIR
UCL classification: UCL
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Medical Sciences > Eastman Dental Institute
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng
URI: https://discovery.ucl.ac.uk/id/eprint/10203558
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