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O‐Carboxymethylstarch Amine Polyampholytes as Papermaking Additives
Author(s) -
Cheng W. C.,
Carr M. E.
Publication year - 1978
Publication title -
starch ‐ stärke
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.62
H-Index - 82
eISSN - 1521-379X
pISSN - 0038-9056
DOI - 10.1002/star.19780300808
Subject(s) - papermaking , amine gas treating , cationic polymerization , chemistry , starch , xanthate , polymer chemistry , chemical engineering , organic chemistry , materials science , composite material , engineering
Xanthated starch amine (XSA) polyampholytes, containing cationic amine and anionic xanthate substituents, improve both wet and dry strengths of paper when they are applied before formation of paper web. However, neither cationic starch amines nor starch xanthates, when applied individually, give the wet‐strength property. The potential for ampholytic starches, in general, to affect this important property was investigated. Multivalent cations (Fe +3 , Al +3 ) improved the paper wet strength independently of carboxymethylstarch amine derivates.