Walnut shell
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Description
A powder made from ground walnut shell refuse. Walnut shell flour contains cellulose with lignin (28%), furfural (5%), pentosans (9%), methyl hydroxylamine (6%) and sugar/starch (2.5%) (Brady 1971). It is used as a filler in plastics and adhesives. Walnut shells have also been used as a soft abrasive for air pressure cleaning of outdoor sculpture (Veloz and Chase 1989).
Synonyms and Related Terms
walnut husks
Additional Information
N.Veloz, W.T.Chase, "Airbrasive Cleaning of Statuary & Other Structures" Technology & Conservation, 1/89, p.18-28.
Comparisons
Properties of Common Abrasives
Sources Checked for Data in Record
- G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 857
- Marie Svoboda, Conservation Survey Index, unpublished, 1997