Particle-induced phase separation in quasi-binary polymer solutions
(2004) In Langmuir 20(5). p.1605-1610- Abstract
- A long-ranged attractive force was recently detected between two mica plates immersed in a quasibinary polymer solution (Freyssingeas et al. Langmuir 1998,14, 5877-5889). The quasi-binary polymer solution was aqueous ethyl(hydroxyethyl)cellulose (EHEC), where the EHEC had a broad polydispersity. The long-ranged attractive force in the EHEC solution could not be attributed to classical mechanisms such as depletion or bridging. In this study, we investigated if this attractive force can give rise to instability effects in mixed polymer-particle solutions. Accordingly, the effects of added particles on the phase behavior of aqueous EHEC solutions were investigated by cloud point measurements. Aqueous EHEC solutions phase separate on heating.... (More)
- A long-ranged attractive force was recently detected between two mica plates immersed in a quasibinary polymer solution (Freyssingeas et al. Langmuir 1998,14, 5877-5889). The quasi-binary polymer solution was aqueous ethyl(hydroxyethyl)cellulose (EHEC), where the EHEC had a broad polydispersity. The long-ranged attractive force in the EHEC solution could not be attributed to classical mechanisms such as depletion or bridging. In this study, we investigated if this attractive force can give rise to instability effects in mixed polymer-particle solutions. Accordingly, the effects of added particles on the phase behavior of aqueous EHEC solutions were investigated by cloud point measurements. Aqueous EHEC solutions phase separate on heating. Three different samples of EHEC were investigated, including hydrophobically modified EHEC. As colloidal particles, silica and polystyrene latex were used. The dispersed colloidal particles lowered the cloud point temperature at low polymer concentrations for all EHEC-particle combinations. This particle-induced phase separation is discussed in terms of surface effects. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/153807
- author
- Olsson, Martin LU ; Joabsson, Fredrik and Piculell, Lennart LU
- organization
- publishing date
- 2004
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Langmuir
- volume
- 20
- issue
- 5
- pages
- 1605 - 1610
- publisher
- The American Chemical Society (ACS)
- external identifiers
-
- wos:000189241500012
- scopus:1542375077
- ISSN
- 0743-7463
- DOI
- 10.1021/la035929m
- language
- English
- LU publication?
- yes
- id
- 25fb6a68-ddf2-4c47-af6c-3e536a00349e (old id 153807)
- date added to LUP
- 2016-04-01 12:15:57
- date last changed
- 2022-01-27 01:12:01
@article{25fb6a68-ddf2-4c47-af6c-3e536a00349e, abstract = {{A long-ranged attractive force was recently detected between two mica plates immersed in a quasibinary polymer solution (Freyssingeas et al. Langmuir 1998,14, 5877-5889). The quasi-binary polymer solution was aqueous ethyl(hydroxyethyl)cellulose (EHEC), where the EHEC had a broad polydispersity. The long-ranged attractive force in the EHEC solution could not be attributed to classical mechanisms such as depletion or bridging. In this study, we investigated if this attractive force can give rise to instability effects in mixed polymer-particle solutions. Accordingly, the effects of added particles on the phase behavior of aqueous EHEC solutions were investigated by cloud point measurements. Aqueous EHEC solutions phase separate on heating. Three different samples of EHEC were investigated, including hydrophobically modified EHEC. As colloidal particles, silica and polystyrene latex were used. The dispersed colloidal particles lowered the cloud point temperature at low polymer concentrations for all EHEC-particle combinations. This particle-induced phase separation is discussed in terms of surface effects.}}, author = {{Olsson, Martin and Joabsson, Fredrik and Piculell, Lennart}}, issn = {{0743-7463}}, language = {{eng}}, number = {{5}}, pages = {{1605--1610}}, publisher = {{The American Chemical Society (ACS)}}, series = {{Langmuir}}, title = {{Particle-induced phase separation in quasi-binary polymer solutions}}, url = {{http://dx.doi.org/10.1021/la035929m}}, doi = {{10.1021/la035929m}}, volume = {{20}}, year = {{2004}}, }