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Composite cation exchangers
Author(s) -
Vasudevan Padma,
Sarma N. L. N.
Publication year - 1979
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1979.070230514
Subject(s) - sawdust , formaldehyde , composite number , phenol , polymer , materials science , chemical engineering , composite material , ion exchange , ion exchange resin , chemistry , polymer chemistry , nuclear chemistry , organic chemistry , ion , engineering
Sulfonated phenol formaldehyde resins containing different amounts of sulfonated sawdust were prepared. The thermal and chemical stabilities, scientific weight capacity, and apparent capacities for the exchange of Na + , Ca 2+ , and Mg 2+ at different concentrations were detemined for both H + and Na + forms of resins. Composites containing up to 30%–50% of sawdust, while being very much cheaper, are comparable in their properties to the pure polymeric resin. Thus, cheaper exchangers can be prepared by substituting part of the polymer by sawdust.