Soda process
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Description
A chemical method of producing paper pulp from wood and other plants using Sodium hydroxide. This process is not common, since it is not as effective as kraft pulping. However, the soda process is preferred for many types of non-wood paper pulps, such as Grass and Straw.
Synonyms and Related Terms
Soda pulp; hardwood bleached soda; hardwood soda
Other Properties
When stained with Graff's C-stain, soda pulp can appear in a range of colors depending on the wood type and the amount of bleaching. Unbleached soda pulps will appear yellow or grey/green. With increased bleaching, pulps will appear lighter and tend more toward blue or purple when treated with stain.
Authority
- Christopher Biermann. Essentials of Pulping and Papermaking. Academic Press, 1993.
- TAPPI Official Standard T401 om-08. Fiber analysis of paper and paperboard. 2008. http://www.tappi.org/Downloads/Test-Methods/UNTITLED-0104T401pdf.aspx