Search: onr:"swepub:oai:slubar.slu.se:58833" >
Surface modified ce...
-
Ander, PaulSwedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för skogens produkter,Department of Forest Products
(author)
Surface modified cellulose obtained by acetylation without solvents of bleached and unbleached kraft pulps
- Article/chapterEnglish2011
Publisher, publication year, extent ...
-
2011
-
Industrial Chemistry Research Institute,2024
Numbers
-
LIBRIS-ID:oai:slubar.slu.se:58833
-
https://res.slu.se/id/publ/58833URI
Supplementary language notes
-
Language:English
-
Summary in:English
Part of subdatabase
Classification
-
Subject category:ref swepub-contenttype
-
Subject category:art swepub-publicationtype
Notes
-
Heterogeneous acetylation to a low extent of bleached and unbleached commercial kraft pulps was performed with acetic anhydride without solvents and in the presence of sulfuric acid catalyst. The process was conducted in an effort to change the polarity of studied kraft pulps and to improve their compatibility with synthetic polymers without changing their fibrous structure. It was observed that the fiber morphology does not change up to a reaction time of 3 h for both investigated materials. The hydrophilic character of the bleached pulp was decreased by acetylation to a low extent, while the unbleached material showed an initial increase of water retention capacity. At higher degrees of modification, both pulps exhibited similar hydrophilic properties. For both materials, an initial slightly increased susceptibility to enzymatic attack with cellulase from Trichoderma reesei was observed, however the acetylated bleached cellulose fibers were more susceptible to enzymatic attack than those of the unbleached material.
Subject headings and genre
Added entries (persons, corporate bodies, meetings, titles ...)
-
Sveriges lantbruksuniversitetInstitutionen för skogens produkter
(creator_code:org_t)
-
Sveriges lantbruksuniversitet
Related titles
-
In:Polimery -- Tworzywa Wielkocza¿¿¿¿steczkowe56, s. 834-8400032-2725
Internet link
Find in a library
To the university's database