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Document Type

Research

Abstract

It is known in a general way that acid and alkali are destructive to silk fibroin, but there are only few and scattered data recorded in the literature. In this laboratory, the acid and the alkaline hydrolyses of silk fibroin have been followed by determination of the nitrogen, weight, wet breaking strength and elongation at the breaking load of a degummend silk fabric after treatment for ten hours with sodium hydroxide ranging from 0.0 to 0.5 N at 25° and 40°C., hydrochloric acid of concentrations 0.0 to 2.0 N at 40°C., and with acid and alkali for one hour at 100°C. At 40°C., 0.5 N sodium hydroxide and 2.0 N hydrochloric acid have the same effect upon nitrogen content and weight; breaking strength is decreased 50 percent by 0.03 N sodium hydroxide and by 0.9 N hydrochloric acid.

Publication Date

1934

Journal Title

Proceedings of the Iowa Academy of Science

Volume

41

Issue

1

First Page

171

Last Page

172

Copyright

© Copyright 1934 by the Iowa Academy of Science, Inc.

Language

EN

File Format

application/pdf

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