Successive ultrafiltration fraction of technical lignosulfonates is carried out on membranes with gradually decreasing pore size (from 73 to 5 nm) in the absence of gel formation and with thorough diafiltration of the samples. Gel chromatography and potentiometry are used to determine the molecular weight composition of the resulting fractions and their ionogenic properties.
|Number of pages||4|
|Journal||Soviet journal of water chemistry and technology|
|Publication status||Published - 1 Dec 1989|
ASJC Scopus subject areas
- Materials Science(all)