The colloidal pK_a of lipophilic extractives commonly found in Pinus radiata

摘要

This paper uses established experimental methods to determine the colloidal pK_a values for a variety of weak organic acids found in the lipophilic extractives of Pinus radiata at 20℃ and 50℃. The 50℃ colloidal pK_a values, to the knowledge of the authors, are published for the first time in this paper. This data will hopefully lead to a better understanding of how these weak organic acids interact in the 50℃ temperature range of modern pulp and papermaking. The colloidal pK_a values for behenic, lignoceric and cerotic acids are also believed to be published for the first time in this paper.