Author:
Okawa, Akinori; Kadokura, Takeo; Masuda, Katsuhiko
Title Article/Chapter:
"Hakushoku ganryo ni yoru kami no rekka yokusei"
Title Translated English:
"The effect of calcium carbonate on the degradation of paper"
Title of Source:
Kobunkazai no kagaku
AATA Number:
26-492
Issue Number:
32
Date of Publication:
December 1987
Page Numbers:
70-77
Collation:
4 figs.
ISSN:
0368-6272
Language Text:
Japanese
Language Summaries:
English
Subject Keywords English:
Paper Deterioration Calcium carbonate;Print Wood Block;Paper Preservation Calcium carbonate;Print Paper Analysis;Paper X-ray diffraction (XRD) AATA
Abstract:
Two wood block prints printed 90 years ago were investigated. In white parts of the prints and their lining papers, calcium carbonate mixed with plaster of Paris (calcium sulfate) was identified by nondestructive x-ray diffraction analysis; alum was not found. The existence of plaster of Paris and absence of alum was considered to be the result of the reaction between calcium carbonate and alum. Tensile strength, folding endurance, elongation, and pH of the brown and white parts of the lining paper were measured. The white parts showed higher values than the brown parts in all measurements. The pH of the white areas was about 6, whereas it is about 5 in the brown parts. The authors speculated that the brown parts of the lining paper resulted from the interaction with alum which lowered its pH, promoting the degradation of the paper. They thus conclude that calcium carbonate prevents the degradation of paper. -- AATA
Originating Institution:
AATA
Location of Document:
MCI
MCI Accession Number:
22506
Record Type:
Abstract
Literature Type:
Serial
Bibliographic Level:
Analytic
Old BCIN Number:
146230
BCIN Number:
92817
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