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Saturday, June 1 • 3:00pm - 3:30pm
(Research and Technical Studies) Fat Content in Collagen Based Adhesives – Assumptions and Investigation Results

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Collagen based adhesives with high fat content, such as rabbit skin glue, play a peripheral role within the field of furniture and wood conservation. The limited use of this category of adhesives primarily rests with the assumption that the percentage of fat is the determining factor in their low adhesive and cohesive qualities. Since there are very few published reports on this aspect of collagen based adhesives, the substantiality of these assumptions have to be verified.

This presentation will outline the practical implications of fat content in collagen based adhesives, based on Sophia Rydell’s masters’ thesis work “The Role of Fat Content in Gelatin Based Adhesives - An Investigation into how the Fat Content Affects Physical Properties”, published in 2011. Testing results indicated that an increase in fat content lowers the melting point and viscosity, characteristics which can be important in hot melt adhesives. More importantly, results also indicated that an increase in fat content improves the flexibility and strength of a wood joint. Should the perception of high fat adhesives be revised?

While gelatin was the material used as the experimental model for collagen based adhesives, the work additionally highlighted the possibility of using this material as a wood adhesive. The circumstances when a high fat adhesive will offer an advantage over a lean adhesive will be brought to light, as well as its potentials and limitations.

avatar for Sofia Rydell

Sofia Rydell

Assistant Furniture Conservator, Period Furniture Conservation

Saturday June 1, 2013 3:00pm - 3:30pm EDT
JW Marriott White River Ballroom A-B 19 S West St Indianapolis, IN 46204

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