Dissolved and colloidal substances from mechanical pulp suspensions - stability and flocculation behaviour

Jan Nylund; Olai Lagus; Jarl B. Rosenholm

doi:10.1016/0927-7757(95)03088-3

Dissolved and colloidal substances from mechanical pulp suspensions - stability and flocculation behaviour

Jan Nylund, Olai Lagus, Jarl B. Rosenholm

Molekylärvetenskap och -teknik

Forskningsoutput: Tidskriftsbidrag › Artikel › Vetenskaplig › Peer review

23 Citeringar (Scopus)

Sammanfattning

The stability of the colloidal material present in unbleached thermomechanical pulp suspensions was investigated. Flocculation was induced with linear cationic polyacrylamides having different charge densities but equal molecular weights. The results indicate that the formation of polyelectrolyte complexes plays an important role in the destabilization of the colloidal particles in the suspension. The properties of the polyelectrolyte complexes formed between dissolved wood polymers and added cationic polyelectrolytes were observed to be dependent on the charge density of the cationic polyelectrolyte. Very large non-stoichiometric polyelectrolyte complexes seemed to be formed. Complex formation on the particle surfaces was found to be of importance for the flocculation and stability behaviour of the colloidal particles. © 1995.

Originalspråk	Engelska
Sidor (från-till)	137-146
Antal sidor	10
Tidskrift	Colloids and Surfaces A: Physicochemical and Engineering Aspects
Volym	104
Nummer	2-3
DOI	https://doi.org/10.1016/0927-7757(95)03088-3
Status	Publicerad - 1995
MoE-publikationstyp	A1 Tidskriftsartikel-refererad

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10.1016/0927-7757(95)03088-3

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title = "Dissolved and colloidal substances from mechanical pulp suspensions - stability and flocculation behaviour",

abstract = "The stability of the colloidal material present in unbleached thermomechanical pulp suspensions was investigated. Flocculation was induced with linear cationic polyacrylamides having different charge densities but equal molecular weights. The results indicate that the formation of polyelectrolyte complexes plays an important role in the destabilization of the colloidal particles in the suspension. The properties of the polyelectrolyte complexes formed between dissolved wood polymers and added cationic polyelectrolytes were observed to be dependent on the charge density of the cationic polyelectrolyte. Very large non-stoichiometric polyelectrolyte complexes seemed to be formed. Complex formation on the particle surfaces was found to be of importance for the flocculation and stability behaviour of the colloidal particles. {\textcopyright} 1995.",

keywords = "Charged density, Colloidal stability, Detrimental substances, Mechanical pulp, Polyelectrolyte complex",

author = "Jan Nylund and Olai Lagus and Rosenholm, {Jarl B.}",

year = "1995",

doi = "10.1016/0927-7757(95)03088-3",

language = "English",

volume = "104",

pages = "137--146",

journal = "Colloids and Surfaces A: Physicochemical and Engineering Aspects",

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publisher = "Elsevier",

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TY - JOUR

T1 - Dissolved and colloidal substances from mechanical pulp suspensions - stability and flocculation behaviour

AU - Nylund, Jan

AU - Lagus, Olai

AU - Rosenholm, Jarl B.

PY - 1995

Y1 - 1995

N2 - The stability of the colloidal material present in unbleached thermomechanical pulp suspensions was investigated. Flocculation was induced with linear cationic polyacrylamides having different charge densities but equal molecular weights. The results indicate that the formation of polyelectrolyte complexes plays an important role in the destabilization of the colloidal particles in the suspension. The properties of the polyelectrolyte complexes formed between dissolved wood polymers and added cationic polyelectrolytes were observed to be dependent on the charge density of the cationic polyelectrolyte. Very large non-stoichiometric polyelectrolyte complexes seemed to be formed. Complex formation on the particle surfaces was found to be of importance for the flocculation and stability behaviour of the colloidal particles. © 1995.

AB - The stability of the colloidal material present in unbleached thermomechanical pulp suspensions was investigated. Flocculation was induced with linear cationic polyacrylamides having different charge densities but equal molecular weights. The results indicate that the formation of polyelectrolyte complexes plays an important role in the destabilization of the colloidal particles in the suspension. The properties of the polyelectrolyte complexes formed between dissolved wood polymers and added cationic polyelectrolytes were observed to be dependent on the charge density of the cationic polyelectrolyte. Very large non-stoichiometric polyelectrolyte complexes seemed to be formed. Complex formation on the particle surfaces was found to be of importance for the flocculation and stability behaviour of the colloidal particles. © 1995.

KW - Charged density

KW - Colloidal stability

KW - Detrimental substances

KW - Mechanical pulp

KW - Polyelectrolyte complex

UR - https://www.mendeley.com/catalogue/cac360aa-679b-38cc-b665-4c458a7f3a53/

U2 - 10.1016/0927-7757(95)03088-3

DO - 10.1016/0927-7757(95)03088-3

M3 - Article

SN - 0927-7757

VL - 104

SP - 137

EP - 146

JO - Colloids and Surfaces A: Physicochemical and Engineering Aspects

JF - Colloids and Surfaces A: Physicochemical and Engineering Aspects

IS - 2-3

ER -

Dissolved and colloidal substances from mechanical pulp suspensions - stability and flocculation behaviour

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