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Adsorption behaviour of cationic fixatives and their effect on pitch deposition


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Maher, LE, Stack, KR, McLean, DS and Richardson, DE 2007 , 'Adsorption behaviour of cationic fixatives and their effect on pitch deposition' , Appita Journal, vol. 60, no. 2 , pp. 112-128 .

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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 fibreattachment
of oleic acid.

Item Type: Article
Authors/Creators:Maher, LE and Stack, KR and McLean, DS and Richardson, DE
Journal or Publication Title: Appita Journal
Publisher: Appita
ISSN: 1038-6807
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