Author:
Aspler, J.S.; Davis, S.; Lyne, M.B.
Title Article/Chapter:
"The dynamic wettability of paper. Part I. The effect of surfactants, alum and pH on self-sizing"
Title of Source:
Tappi Journal
Volume Number:
67
Issue Number:
9
Date of Publication:
September 1984
Page Numbers:
128-131
Language Text:
English
References:
Includes bibliog. refs.
Abstract:
Self-sizing (the decrease in wettability with time or heating) can be prevented at manufacture by spray addition of surficant before calendering. Alum had a strong influence on self-sizing. Alum-free newsprint did not self-size appreciably but could be made to self-size by immersion in an acidic alum solution followed by drying at room temperature and to completely self-size after accelerated aging at 105°C. This suggests a possible simple method for sizing paper containing mechanical pulp, when alum is not used at the wet-end. Buffering the alum-containing newsprint to pH 8 did not reduce its tendency to self-size. Aluminum added by immersion in a suspension of Al(OH)3 did not cause self-sizing. Based on these results, it is suggested that the role of alum in self-sizing is similar to its role in conventional rosin-alum sizing.
Originating Institution:
CCI=ICC
Location of Document:
CCI=ICC
CCI Shelf:
# 3074
Record Type:
Abstract
Literature Type:
Serial
Bibliographic Level:
Analytic
Old BCIN Number:
58130
BCIN Number:
34674
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