The mist-lining technique: a look into the mechanical performance and the adhesive bond strength of selected lining materials
Résumés
Le rentoilage et le doublage ont pour but le renforcement du support affaibli d'une peinture sur toile, en général par l'adhérence d'une nouvelle toile. Comme décrit dans la littérature spécialisée, parmi les exigences techniques d'un tel traitement, la nouvelle structure doit avoir une rigidité et une récupération élastique importante. Il y est également mentionné l'utilisation de matériaux non hygroscopique, isotropique et hautement réversible. Cette étude a comme but d'évaluer les aspects qui dirigent la force d'adhérence du mist-lining, une technique de doublage développer durant la dernière décennie aux Pays-Bas qui consiste à pulvériser une dispersion acrylique sur la toile de doublage et à la réactivation de cet adhésif par des vapeurs de solvants.
Entrées d’index
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Thank to D.J. Yusà Marco, S. Vicente Palomino, K. Seymour, J. van Och,Prof. Vishwa R. Mehra, Dr. René Hoppenbrouwers (SRAL), Gwendoline Fife (SRAL), Marya Albrecht (UvA), Saskia van Oudheusden (UvA), Melissa Daugherty (UvA), Stijn Lenaerts (SRAL), Dr. Ana Pereira (SRAL), Michael Correia (SRAL), Lise Steyn (UvA), Julia Balerdi (UPV).
Experimental
1In this research, several mock-ups have been tested. On the one hand, two old fabrics with remnants of former wax-resin lining adhesives (historically used in the North European lining tradition) were re-lined with the mist-lining technique. In addition, a primed commercial Belgian linen fabric (unsized, plain weave with oil priming simulating a traditional painting) was also lined following the same method. In all three cases a beige polyester canvas (spun-yarn, plain weave, 0.42mm thick and 258 g/m2 weight) was used as lining fabric, and a common acrylic dispersion (mixture of acrylic polymers and methyl-methacrylate and ethyl-acrylate copolymers) was used as adhesive. The adhesive was sprayed, let dry and then reactivated by means of controlled solvent-vapour action. Solvents such as ethanol and a couple of xylene-ethanol mixtures in different proportions (80:20 and 20:80) were selected and the influence of polarity and solvent action in the resulting adhesive bond strength was evaluated.
2This research has focused in the study of the mechanical properties of the materials used in the mist-lining technique (considered an alternative to other traditional lining techniques that have been showing structural drawbacks over the years). The aim was to evaluate if the mist lining fulfils the mechanical requirements expected for any support (and adhesive) used to reinforce an old canvas painting. For this purpose, tensile and peel tests were carried out to understand the cohesion, stiffness and adhesiveness of the new lining structure. This research also includes the evaluation of the degree of reversibility of the new lining materials, understood as either the amount of adhesive residue left after removal in the fabric interstices of the canvas painting as well as the easy detachment of the lining fabric without any structural interference with the original canvas that could compromise the future stability of the work of art. For this purpose Light Microscopy and Scanning Electron Microscopy analysis were carried out to study the adhesive-canvas interface in detail.
Conclusions
3Wax-resin linings have evidenced some drawbacks throughout history mainly derived from the irreversible impregnation of the painting structure, which limits further re-treatability. Apart from being compatible with the existing residues of former wax-resin linings, the mist-lining technique has proved to provide the stiffness, strength and dimensional stability required in such a treatment.
4First results evidenced the relevance of selecting one or another reactivation solvent. The use of polar solvents as ethanol results in more adhesive bonds (and therefore, a higher ultimate tensile strength and stiffness of the lined structure), meanwhile hydrocarbons have shown to produce more flexible linings. Mechanical testing has also shown the importance of choosing a stiff reinforcement material that acts as support of the actual painting. To finish, this research evidenced that further research is needed to find methods, strategies and materials that provide the requirements expected in each single case-study.
Table des illustrations
Titre | Fig.1 Microphotographs |
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Légende | Microphotographs of the lining in cross-section with OM (x40) and SEM (x350) |
URL | http://journals.openedition.org/ceroart/docannexe/image/5137/img-1.jpg |
Fichier | image/jpeg, 280k |
Titre | Fig.2 Control fabric |
Légende | Claessens® after peel T-tests in OM at x10 |
URL | http://journals.openedition.org/ceroart/docannexe/image/5137/img-2.jpg |
Fichier | image/jpeg, 154k |
Pour citer cet article
Référence électronique
L. Bertomeu Contreras, L. Fuster López et A. Vicente Escuder, « The mist-lining technique: a look into the mechanical performance and the adhesive bond strength of selected lining materials », CeROArt [En ligne], HS | 2017, mis en ligne le 02 juin 2017, consulté le 29 mars 2024. URL : http://journals.openedition.org/ceroart/5137 ; DOI : https://doi.org/10.4000/ceroart.5137
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