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A chemical compound that adheres or bonds items together, such as pieces of ceramic. In ceramic conservation there are several different types that range from natural to man-made adhesives. Conservators characterise the best adhesive as one which can be undone.
Missing fragments were replaced with new glazed and fired pieces of pottery and gaps were filled in with plaster. The surface was then painted, sometimes extensively. [1] Materials used included shellac, protein glues, oil paints, gypsum, plaster of Paris, barium sulfate, calcite, clay, kaolin, and water glass (calcium silicate). [3]
Water The organic components in ivory is called ossein, which is decomposed by hydrolysis and after long-term exposure can cause the ivory to turn into a sponge-like substance. Even for cleaning purposes, water can damage ivory so it should be avoided.
Such treatment provides some protection by excluding water and other weathering agents, but it stains the stone permanently. During the renaissance Europeans experimented with the use of topical varnishes and sealants made from ingredients such as egg white, natural resins and silica, which were clear, could be applied wet and harden to form a ...
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Animal glue in granules. Animal glue is an adhesive that is created by prolonged boiling of animal connective tissue in a process called rendering. [1] In addition to being used as an adhesive, it is used for coating and sizing, in decorative composition ornaments, and as a clarifying agent.
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