NORDIC PULP & PAPER RESEARCH JOURNAL
Home » Volume 32, 2017 » Issue No. 4
PAPER CHEMISTRY
Strengthening wood fiber networks by adsorption of complexes of chitosan with dialdehyde starch
Markus H.J. Korhonen, Gisela Cunha, Raili Koponen, Kirsi Hirvonen and Orlando J. Rojas
Abstract
Two biopolymers were applied to wood fibers suspended in aqueous media under conditions typical of industrial fiber processing units. Adsorption of the biopolymers, which were added as a pre-formed complex, endowed enhanced network strength upon wet-laying in papermaking. A significant effect in the dry strength of the resultant paper (up to 100 % increase) was recorded. Remarkably, this gain in strength was achieved while maintaining a low water absorption capacity (as measured by the water retention value) and also resulted in an enhanced wet strength. The proposed approach represents a promising alternative since it comprises bio-based polymers that are non-toxic and perform under industrially-relevant conditions.
Keywords
Chitosan, Dialdehyde starch, Fiber networks, Renewable, Strength
Pages
683-690
DOI
10.3183/NPPRJ-2017-32-04-p683-690
Price
22 EUR (excl. VAT) Buy PDF
Nordic Pulp & Paper Research Journal (NPPRJ) is an international scientific magazine covering science and technology for the areas of wood or bio-mass constituents, pulp and paper and including new fiber-based materials, recovery and by-products from pulping processes, bio-refining and energy issues. Articles meeting required scientific standards are accepted from any continent.
Open Access: Articles not available through Gold Open Access may be purchased by credit card as a pdf file, to be downloaded within 24 h after ordering, at a price of 22 EUR per article. (Value added tax may apply depending on your location, which you enter at payment logout.) Such articles have Green Open Access, i.e. authors may share articles on their personal non-commerical homepage immediately after publication on the website and download them to non-commercial hosting platforms one year after publication in a full issue of NPPRJ.
ISSN: 0283-2631