Open AccessPolymeric Branched Flocculant Effect on the Flocculation Process of Pulp Suspensions in the Papermaking Industry
Author(s) -
Ángeles Blanco,
Elena Fuente,
M. Concepción Monte,
Noelia Mori Cortés,
Carlos Negro
Publication year - 2009
Publication title -
industrial and engineering chemistry research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.878
H-Index - 221
eISSN - 1520-5045
pISSN - 0888-5885
DOI - 10.1021/ie8011837
Subject(s) - papermaking , flocculation , kraft process , pulp (tooth) , cationic polymerization , pulp and paper industry , kraft paper , chemistry , polyacrylamide , chemical engineering , organosolv , lignosulfonates , polymer , materials science , lignin , composite material , polymer chemistry , organic chemistry , medicine , pathology , engineering
This paper presents the effect of the structure of cationic polyacrylamides (CPAMs) on flocculation of pulp\udsuspensions and floc properties. A focused beam reflectance measurement (FBRM) probe was used to monitor\udflocculation, deflocculation, and reflocculation processes in real time. To carry out the study, 1% elemental\udchlorine free (ECF) eucalyptus kraft pulp containing 20% ground calcium carbonate (GCC) was used. Results\udshow that the effect of the CPAM structure depends on charge density and polymer dose. Floc size does not\udalways decrease with branching degree, whereas floc stability and reflocculation ability increased when highly\udcharged and branched CPAM was used. These findings indicate that the use of highly branched CPAMs with\udvery high molecular weight is very promising as a retention aid method to improve the papermaking process
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