DISSOLVED AND COLLOIDAL SUBSTANCES FROM MECHANICAL PULP SUSPENSIONS - STABILITY AND FLOCCULATION BEHAVIOR

被引：16

作者：

NYLUND, J

LAGUS, O

ROSENHOLM, JB

机构：

[1] Department of Physical Chemistry, Åbo Akademi University, Åbo

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 1995年 / 104卷 / 2-3期

关键词：

CHARGED DENSITY; COLLOIDAL STABILITY; DETRIMENTAL SUBSTANCES; MECHANICAL PULP; POLYELECTROLYTE COMPLEX;

D O I：

10.1016/0927-7757(95)03088-3

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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.

引用

页码：137 / 146

页数：10

共 27 条

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