onr:"swepub:oai:DiVA.org:kth-8363"
Search: onr:"swepub:oai:DiVA.org:kth-8363" > Enhancement of the ...
- 1 of 1
- Previous record
- Next record
- To hitlist
Enhancement of the wet properties of transparent chitosan-acetic-acid-salt films using microfibrillated cellulose
-
- Nordqvist, David (author)
- KTH,Fiber- och polymerteknologi
-
- Idermark, Johan (author)
- KTH,Fiber- och polymerteknologi
-
- Hedenqvist, Mikael S. (author)
- KTH,Fiber- och polymerteknologi
- show more...
- show less...
- (creator_code:org_t)
- 2007-07-24
- 2007
- English.
- In: Biomacromolecules. - : American Chemical Society (ACS). - 1525-7797 .- 1526-4602. ; 8:8, s. 2398-2403
- Journal article (peer-reviewed)
Abstract
Subject headings
Close
- This report presents a new route to enhance the wet properties of chitosan-acetic-acid-salt films using microfibrillated cellulose (MFC). The enhancement makes it easier to form chitosan-acetic-acid-salt films into various shapes at room temperature in the wet state. Chitosan with MFC was compared with the well-known buffer treatment. It was observed that films containing 5 wt % MFC were visually identical to the buffered/unbuffered films without MFC. Field-emission scanning electron microscopy indicated that MFC formed a network with uniformly distributed fibrils and fibril bundles in the chitosan matrix. The addition of MFC reduced the risk of creases and deformation in the wet state because of a greater wet stiffness. The wet films containing MFC were also extensible. Although the stiffness, strength and extensibility were highest for the buffered films, the wet strength of the MFC-containing unbuffered films was sufficient for wet forming operations. The effects of MFC on the mechanical properties of the dry chitosan films were small or absent. It was concluded that the addition of MFC is an acceptable alternative to buffering for shaping chitosan films/products in the wet state. The advantages are that the "extra" processing step associated with buffering is unnecessary and that the film matrix remains more water-soluble.
Subject headings
- NATURVETENSKAP -- Kemi -- Polymerkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Polymer Chemistry (hsv//eng)
Keyword
- Acetic acid
- Mechanical properties
- Scanning electron microscopy
- Solubility
- Stiffness
- Wetting Buffer treatment
- Chitosan-acetic-acid-salt films
- Film matrix
- Microfibrillated cellulose
- Polymer chemistry
- Polymerkemi
Publication and Content Type
- ref (subject category)
- art (subject category)
Find in a library
- Biomacromolecules (Search for host publication in LIBRIS)
To the university's database
- 1 of 1
- Previous record
- Next record
- To hitlist
Find more in SwePub
- By the author/editor
- Nordqvist, David
- Idermark, Johan
- Hedenqvist, Mika ...
- Gällstedt, M.
- Ankerfors, M.
- Lindström, T.
- About the subject
-
- NATURAL SCIENCES
- NATURAL SCIENCES
- and Chemical Science ...
- and Polymer Chemistr ...
- Articles in the publication
- Biomacromolecule ...
- By the university
- Royal Institute of Technology
Search outside SwePub
- Extend your search to:
- Google Book Search
- Google Scholar
Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.
- Copyright © LIBRIS - National Library Systems
- LIBRIS.kb.se
