Search for dissertations about: "NaOh mercerization"
Found 2 swedish dissertations containing the words NaOh mercerization.
-
1. Extended Mercerization Prior to Carboxymethyl Cellulose Preparation
Abstract : Carboxymethyl cellulose (CMC) is produced commercially in a two-stage process consisting of a mercerization stage, where the pulp is treated with alkali in a water alcohol solution, followed by an etherification stage in which monochloroacetic acid is added to the pulp slurry. In this thesis an extended mercerization stage of a spruce ether pulp was investigated where the parameters studied were the ratio of cellulose I and II, concentration of alkali, temperature and retention time. READ MORE
-
2. Mercerization and Enzymatic Pretreatment of Cellulose in Dissolving Pulps
Abstract : This thesis deals with the preparation of chemically and/or enzymatically modified cellulose. This modification can be either irreversible or reversible. Irreversible modification is used to prepare cellulose derivatives as end products, whereas reversible modification is used to enhance solubility in the preparation of regenerated cellulose. READ MORE