Evidence for the Occurrence of Polymerized Wood Resin in Pulp and Paper Samples from Various Analytical Techniques, 2008 Engineering, Pulping and Environmental Conference

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Questions have been raised about the origin or cause of wood resin polymerization and its possible role in contributing to pitch deposition problems. It has been speculated that polymerization occurs during wood seasoning and/or in mill processes; this polymerization results in pitch deposition problems. These questions and speculations can only be addressed by application of appropriate analytical techniques to characterize the polymerized wood resin. In this report, we review the application of such techniques and their relative merits for demonstrating the presence and nature of polymerized wood resin in a variety of pulp and paper samples. This sets the stage for future research on the formation of polymerized wood resin in mill processes, the results of which could help in better control of pitch deposits and in production of pulps with very low levels of lipophilic extractives.