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Study of the Effect of pH During Dialdehyde Starch (DAS) Adsorption on Cellulose
Author(s) -
Bencheva S.,
Nedelcheva M.,
Valchev V.
Publication year - 1985
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.19850370808
Subject(s) - adsorption , cellulose , aluminium , chemistry , pulp (tooth) , starch , inorganic chemistry , metal , organic chemistry , medicine , pathology
The adsorption of dialdehyde starch (DAS) by its water solutions of different concentrations on sulphate and sulphite bleached cellulose is studied in the presence of aluminium sulphate depending on pH of the media. It was found that for both cellulose types the character of the change of the DAS adsorbed quantity depending on pH is similar and it is defined by the concentration of the solution. It was found that at the low DAS concentrations the interaction of the cellulose with aluminium sulphate appears as defining, and at the higher ones the interaction between DAS and aluminium sulphate. In the presence of aluminium sulphate the quantity of the adsorbed DAS increases slowly (sulphate bleached pulp) or has almost the same values, as in the case of adsorption when the aluminium sulphate is lacking (sulphite bleached pulp).