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Bonding Historical Leather Bookbindings. Comparison of a Set Of Adhesives in Order to Study Alternatives to Wheat Starch Paste

par Oñate Muñoz, Ana;Thys, Noëlle;Van Geyts, Estelle;Robinet, Laurianne;Hocquet, Stephane;Schouw, Tim;Mederos-Henry, Francisco
Editeur scientifique Robinet, Lorianne;Koldeweij, Eloy;Sturge, Theo;Posthuma de Boer, Martine
Référence Interim Meeting of the ICOM-CC Leather and Related Materials Working Group(12: 12-13 October 2022: Amsterdam, The Netherlands), 12th Interim Meeting of the ICOM-CC Leather and Related Materials Working Group, International Council of Museums – Committee for Conservation (ICOM-CC) and Cultural Heritage Agency of the Netherlands., Ed. 1
Publication Publié, 2025-01-01

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Résumé :

Historical vegetable-tanned leather is a highly sensitive material, especially when in contact with water, which can lead to the leather becoming darker and more rigid. Wheat starch paste is one of the most used traditional adhesives in book and paper conservation. However it is water based, therefore it was decided to investigate alternative adhesives. A set of adhesives were first evaluated empirically and then the mechanical properties of selected adhesives, Hydroxypropylcellulose Klucel®, acrylic dispersions (Lascaux), and Beva 371, were assessed using a T-peel strength test and a repeated folding test. The results of this study were applied to a 16th century printed book with a vegetable-tanned leather cover presenting a general red-rot degradation. The main goals of the treatment were to re-establish the connection between the board covers and the book block, and to attach the leather to the spine. This was possible by using a solvent-reactivated mixed Lascaux® film (3:1 Lascaux® 498HV : Lascaux® 303HV) supported on a tissue of kozo paper.