Wood pitch deposition versus composition

摘要

A study of the effects that wood extractive composition has on pitch deposition was conducted using model solutions 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 concentration of the various components present in the pitch before deposition. Only three of the many scores of chemical compounds found in wet end and wood extractive chemistry were investigated in this study. The results and deposition models developed do, never the less, help to explain why strategies to control wood pitch deposition have and/or have not worked. Suitable control strategies are proposed for various pH and temperature conditions. The techniques reported in this paper form a framework under which more complex and in depth wood pitch deposition studies could be conducted.