Search: onr:"swepub:oai:gup.ub.gu.se/198723" >
Magnetically induce...
Magnetically induced structural anisotropy in binary colloidal gels and its effect on diffusion and pressure driven permeability
-
- Abrahamsson, Christoffer, 1984 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
-
- Nordstierna, Lars, 1976 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
-
- Bergenholtz, Johan, 1964 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för kemi och molekylärbiologi,Department of Chemistry and Molecular Biology,University of Gothenburg
-
show more...
-
Altskär, Annika (author)
-
- Nydén, Magnus, 1970 (author)
- University of South Australia
-
show less...
-
(creator_code:org_t)
- 2014
- 2014
- English.
-
In: Soft Matter. - 1744-683X .- 1744-6848. ; 10:24, s. 4403-4412
- Related links:
-
https://gup.ub.gu.se... (primary) (free)
-
show more...
-
http://publications.... (primary) (free)
-
https://gup.ub.gu.se...
-
https://doi.org/10.1...
-
https://research.cha...
-
show less...
Abstract
Subject headings
Close
- We report on the synthesis, microstructure and mass transport properties of a colloidal hydrogel selfassembled from a mixture of colloidal silica and nontronite clay plates at different particle concentrations. The gel-structure had uniaxial long-range anisotropy caused by alignment of the clay particles in a strong external magnetic field. After gelation the colloidal silica covered the clay particle network, fixing the orientation of the clay plates. Comparing gels with a clay concentration between 0 and 0.7 vol%, the magnetically oriented gels had a maximum water permeability and self-diffusion coefficient at 0.3 and 0.7 vol% clay, respectively. Hence the specific clay concentration resulting in the highest liquid flux was pressure dependent. This study gives new insight into the effect of anisotropy, particle concentration and bound water on mass transport properties in nano/microporous materials. Such findings merit consideration when designing porous composite materials for use in for example fuel cell, chromatography and membrane technology.
Subject headings
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
- NATURVETENSKAP -- Kemi -- Fysikalisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Physical Chemistry (hsv//eng)
Keyword
- diffusion
- gels
- clays
- silica
- magnetic field
- anisotropy
- flow
- permeability
- anisotropy
Publication and Content Type
- ref (subject category)
- art (subject category)
Find in a library
To the university's database