Search: onr:"swepub:oai:DiVA.org:kth-6717" >
Biomimetic polysacc...
Biomimetic polysaccharide nanocomposites of high cellulose content and high toughness
-
- Svagan, Anna (author)
- KTH,Fiber- och polymerteknologi
-
- Azizi Samir, My Ahmed Said (author)
- KTH,Fiber- och polymerteknologi
-
- Berglund, Lars (author)
- KTH,Fiber- och polymerteknologi
-
(creator_code:org_t)
- 2007-07-27
- 2007
- English.
-
In: Biomacromolecules. - : American Chemical Society (ACS). - 1525-7797 .- 1526-4602. ; 8:8, s. 2556-2563
- Related links:
-
https://urn.kb.se/re...
-
show more...
-
https://doi.org/10.1...
-
show less...
Abstract
Subject headings
Close
- Plant cell walls combine mechanical stiffness, strength and toughness despite a highly hydrated state. Inspired by this, a nanostructured cellulose network is combined with an almost viscous polysaccharide matrix in the form of a 50/50 amylopectin-glycerol blend. Homogeneous films with a microfibrillated cellulose (MFC) nanofiber content in the range of 10-70 wt % are successfully cast. Characterization is carried out by dynamic mechanical analysis, field-emission scanning electron microscopy, X-ray diffraction, and mercury density measurements. The MFC is well dispersed and predominantly oriented random-in-the-plane. High tensile strength is combined with high modulus and very high work of fracture in the nanocomposite with 70 wt % WC. The reasons for this interesting combination of properties include nanofiber and matrix properties, favorable nanofiber-matrix interaction, good dispersion, and the ability of the MFC network to maintain its integrity to a strain of at least 8%.
Subject headings
- MEDICIN OCH HÄLSOVETENSKAP -- Medicinsk bioteknologi -- Biomaterialvetenskap (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Medical Biotechnology -- Biomaterials Science (hsv//eng)
Keyword
- Biomimetics
- Cellulose
- Field emission microscopes
- Polysaccharides
- Scanning electron microscopy
- Stiffness
- Tensile strength
- Toughness
- X ray diffraction analysis
- Biomaterials
- Biomaterial
Publication and Content Type
- ref (subject category)
- art (subject category)
Find in a library
To the university's database