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Adsorption behaviour of cationic fixatives and their effect on pitch deposition

journal contribution
posted on 2023-05-16, 21:24 authored by Maher, LE, Karen Stack, McLean, DS, Richardson, DE
The behaviour of the four different polymeric fixatives in the presence of wood extractive components with and without fibres was investigated. Cationic polyacrylamide (CPAM) and high and medium charge co-polymers of polyacrylamide and poly(diallyl-dimethyl ammonium chloride (polyDADMAC) were found to stabilise the wood extractive colloids in solution, as well as to attach the wood resins to the fibre. Polyethylenimine (PEI) was shown to cause non-selective deposition onto both fibre and non-fibre surfaces, as well as reduce the amount of wood extractives in the dissolved and colloidal phase. PEI was also found to preferentially interact with triolein and the medium charge co-polymer exhibited preference in fibre-attachment of oleic acid.

History

Publication title

Appita Journal

Volume

60

Pagination

112-128

ISSN

1038-6807

Department/School

School of Natural Sciences

Publisher

Appita

Place of publication

Melbourne

Repository Status

  • Restricted

Socio-economic Objectives

Paper products and pulp

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    University Of Tasmania

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