Date of Award
Bachelor of Science
Pulp and Paper Technology
Dr. A. H. Nadelman
The available literature on the cold caustic soda pulping process, the composition of aspen wood, the composition of spent liquor from other pulping processes, paper chromatographic methods suitable for the analysis of wood and pulp hydrolyzates, and the material removed from aspen wood by the cold caustic soda pulping process have been surveyed.
Aspen wood hydrolyzates were analyzed using n-butanol: pyridine: water solvent system by paper chromatographic methods. Cold caustic soda pulp was prepared using a two hour soaking period at 25°c temperature, and a 24 gram per liter caustic soda solution with a wood to liquor ratio of 1:5.5.
The prepared pulp hydrolyzate was also analyzed by paper chromatographic means.
Experimental results indicated that glucose, xylose, mannose, and traces of galactose and arabionse were present in aspen wood, and that the cold caustic soda pulping process removed all sugars to varying degrees.
Herrick, Ralph D., "Cold Caustic Soda Pulp from Aspen Wood Some Facts on the Material Dissolved by the Process" (1960). Paper Engineering Senior Theses. 266.