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The effect of wood extractive composition on pitch deposition

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McLean, Douglas Scott (2003) The effect of wood extractive composition on pitch deposition. Research Master thesis, University of Tasmania.

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Abstract

A study of the effects that wood extractive composition has on pitch deposition was
conducted using model solutions comprised of a resin acid, fatty acid and
triglyceride. The deposition behaviour was investigated under various conditions of
pH and temperature.
Statistical pitch deposition models were developed through the use of general
multiple linear regression analysis techniques to relate total pitch deposited to the
interaction of the various components present in the pitch before deposition. These
statistical models were used to predict suitable control strategies for various pH and
temperature conditions.
Three of the classes of chemical compounds found in wet end and wood extractive
chemistry were investigated in this study. The results and deposition models
developed help to explain why strategies to control wood pitch deposition have
and/or have not worked.
Mechanisms of the interaction between components are proposed, based on evidence
from this work and corroboration of papers from the literature.
The techniques reported in this thesis form a framework under which more complex
and in depth wood pitch deposition studies could be conducted.

Item Type: Thesis (Research Master)
Keywords: Wood, Pitch
Copyright Holders: The Author
Copyright Information:

Copyright 2003 the Author - The University is continuing to endeavour to trace the copyright
owner(s) and in the meantime this item has been reproduced here in good faith. We
would be pleased to hear from the copyright owner(s).

Additional Information:

Available for library use only and limited copying in accordance with the Australian Copyright Act of 1968. Thesis (M.Sc.)--University of Tasmania, 2003. Includes bibliographical references

Date Deposited: 19 Dec 2014 02:45
Last Modified: 02 Oct 2017 07:22
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