Abstract:
:High purity cellulose pulp was obtained from Eucalyptus globulus wood by using an environmentally friendly delignification technique (Milox pulping) and subsequent bleaching by totally chlorine free technology. The pulp obtained under optimised experimental conditions was used for the manufacture of carboxymethylcellulose in a heterogeneous medium. By means of an experimental design, the effects of selected operational variables on the composition and chemical properties of reaction products from the carboxymethylation reaction were assessed for optimisation purposes. The distribution of the different carboxymethylglucose mole fractions (un-, mono-, di- and tri-substituted) was determined and compared with theoretical predictions. The maximum average degree of substitution (1.26) was determined at a NaOH/cellulose mole ratio of 4.8 and at a MCA/cellulose mole ratio of 2.0.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Dapía S,Santos V,Parajó JCdoi
10.1016/s0960-8524(03)00066-xsubject
Has Abstractpub_date
2003-09-01 00:00:00pages
289-96issue
3eissn
0960-8524issn
1873-2976pii
S096085240300066Xjournal_volume
89pub_type
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