Sökning: id:"swepub:oai:DiVA.org:kth-41786" >
Colloidal Stability...
Colloidal Stability of Aqueous Nanofibrillated Cellulose Dispersions
-
- Fall, Andreas (författare)
- KTH,Fiberteknologi,Centrum för Biofibermaterial, BiMaC,KTH Royal Institute of Technology, Sweden,Department of Fiber Technology, KTH
-
- Lindström, Stefan (författare)
- KTH,Fiber- och polymerteknologi,VinnExcellens Centrum BiMaC Innovation,Department of Fiber Technology, KTH
-
- Sundman, Ola (författare)
- Department of Forest Products Technology, Aalto University, Aalto, Finland
-
visa fler...
-
- Ödberg, Lars (författare)
- KTH,Fiber- och polymerteknologi,Department of Fiber Technology, KTH
-
- Wågberg, Lars (författare)
- KTH,Fiberteknologi,Wallenberg Wood Science Center,Department of Fiber Technology, KTH
-
visa färre...
-
(creator_code:org_t)
- 2011-08-23
- 2011
- Engelska.
-
Ingår i: Langmuir. - : American Chemical Society (ACS). - 0743-7463 .- 1520-5827. ; 27:18, s. 11332-11338
- Relaterad länk:
-
https://urn.kb.se/re...
-
visa fler...
-
https://doi.org/10.1...
-
https://urn.kb.se/re...
-
https://urn.kb.se/re...
-
https://urn.kb.se/re...
-
visa färre...
Abstract
Ämnesord
Stäng
- Cellulose nanofibrils constitute an attractive raw material for carbon-neutral, biodegradable, nanostructured materials. Aqueous suspensions of these nanofibrils are stabilized by electrostatic repulsion arising from deprotonated carboxyl groups at the fibril surface. In the present work, a new model is developed for predicting colloidal stability by considering deprotonation and electrostatic screening. This model predicts the fibril-fibril interaction potential at a given pH in a given ionic strength environment. Experiments support the model predictions that aggregation is induced by decreasing the pH, thus reducing the surface charge, or by increasing the salt concentration. It is shown that the primary mechanism for aggregation upon the addition of salt is the surface charge reduction through specific interactions of counterions with the deprotonated carboxyl groups, and the screening effect of the salt is of secondary importance.
Ämnesord
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Pappers-, massa- och fiberteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Paper, Pulp and Fiber Technology (hsv//eng)
Nyckelord
- microfibrillated cellulose
- polyelectrolyte
- cylinders
- surfaces
- fibers
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
Hitta via bibliotek
-
Langmuir
(Sök värdpublikationen i LIBRIS)
Till lärosätets databas