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Pitch fixative selection by capillary electrophoresis


McLean, DS and Breadmore, MC and Stack, KR and Richardson, DE and Haddad, PR, Pitch fixative selection by capillary electrophoresis, Appita Journal, 59, (5) pp. 391-395. ISSN 1038-6807 (2006) [Refereed Article]


Wood pitch deposition has antagonised the papermaker for over two hundred years. Fixatives, chemistries which are used to attach wood resin to wood fibre, have been used to alleviate wood pitch deposition to varying degrees of success. This paper aims to present a new method by which fixatives can be evaluated at a molecular level in a short period of time. Capillary Electrophoresis (CE) is used in many industries, including pulp and paper, as an analytical technique for the separation of analytes under the application of an electric field whereby the differences in the electrophoretic mobilities of the analytes lead to their separation. This paper makes use of CE, not for its separation of analytes but for quantification of interactions between analytes and selectivity modifiers. Electrokinetic chromatography (EKC) is a variation of CE where a selectivity modifier is included in the electrolyte. In using wood resin fixatives as selectivity modifiers and wood resin components as analytes, we were able to determine their interactions at a variety of pHs and temperatures. The result of this development is the ability to recommend a given fixative chemistry for the unique pH, temperature and extractive composition of a given pulp and/or paper mill. Details of the methods, results and data interpretation are included in this paper.

Item Details

Item Type:Refereed Article
Research Division:Chemical Sciences
Research Group:Analytical chemistry
Research Field:Separation science
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the chemical sciences
UTAS Author:McLean, DS (Mr Douglas McLean)
UTAS Author:Breadmore, MC (Professor Michael Breadmore)
UTAS Author:Stack, KR (Dr Karen Stack)
UTAS Author:Haddad, PR (Professor Paul Haddad)
ID Code:43103
Year Published:2006
Deposited By:Chemistry
Deposited On:2006-08-01
Last Modified:2009-10-06

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