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SILICONE SOLUTIONS FOR THE PULP, PAPER AND TISSUE INDUSTRY

Author

Dave Wilson

Company

Dow Corning Corporation

Keywords

silicones, defoamer, surfactant, antifoam, softener, drainage, sizing, pulp, paper, tissue

 

 

 

 

ABSTRACT

This paper will provide a technical introduction to silicone chemistry, and summarise the various applications for silicones as process and performance aids in the pulp, paper and tissue industry today.

The term "silicone" is one, which encompasses a wide variety of molecular types. Silicones possess a number of unique properties, and can be modified to create a very wide range of structures.

Key silicone properties include:

* a very high surface activity, due to a very low surface tension

* a highly open and mobile backbone, leading to high molecular flexibility

* very high water repellency, due to the high number of organic groups which can be assembled around the backbone

* equally good water absorbency, thanks to the ability to functionalise the backbone using the extensive silicone chemistry set

The paper will indicate the ways in which these basic properties are currently being utilised in the pulp, paper and tissue industry, and applications will be described which include:

* pulp defoamers

* surfactants and emulsion formulation aids

* waste water antifoams

* digester additives

* tissue softeners

* foam and drainage additives

* sizing agents

UNFORTUNATELY THE FULL PAPER IS NOT YET AVAILABLE