The problem of removing collagen glue from museum textiles

The article deals with the problems of re-restoration of museum tissues reinforced by the method of adhesive duplication. The method proposed in the 1930s by N.N. Semenovich has preserved dozens of unique textile exhibits (banners, monuments of ancient Russian sewing, tapestries) in museum collections. Unfortunately, over time, the negative effect of glue on fabrics was revealed. Museum objects reinforced with adhesive duplication changed color, spots and stains formed on them, the fragility and fragility of textile fibers increased. To give the textile an expositional appearance, it was necessary to develop methods for removing restoration glue. Restorers have tested various methods of removing old adhesives, which include starch and gelatin (collagen). In recent decades, specialists have been researching methods of cleaning textile exhibits with the help of enzymes. If the removal of starch by α-amylase turned out to be safety, then testing of pure protease for collagen removal revealed its negative impact on the integrity of textile fibers, especially wool. Foreign experts have suggested several ways to not dangerous use protease (using a complex of enzymes; modification of the protease to increase its molecular weight). The development of methodological recommendations requires studying the effect of these methods on the mechanical and optical characteristics of artificially aged textile samples with collagen glue applied to them.