Baumann, Lukas and Hegemann, Dirk and de Courten, Damien and Wolf, Martin and Rossi, René M. and Meier, Wolfgang and Scherer, Lukas. (2013) Tuning the resistance of polycarbonate membranes by plasma-induced graft surface modification. Applied surface science, Vol. 268. pp. 450-457.
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Official URL: http://edoc.unibas.ch/dok/A6223395
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Abstract
To tune the permeability resistance of porous polycarbonate (PC) membranes for caffeine, their surfaces were plasma modified with different monomers in a grafting from process. These coatings provided characteristic surface hydrophilicities. It was found that membranes with more hydrophilic surfaces have lower resistances to let caffeine pass through than membranes with hydrophobic surfaces. Additionally, it was possible to post-modify a poly(2-aminoethyl methacrylate) (AEMA) coated PC membrane with octanoic acid (Oct) under mild conditions. This post modification allowed transforming a slightly hydrophilic PC-AEMA membrane with a moderate permeability resistance into a hydrophobic PC-AEMA-Oct membrane with a high permeability resistance. Overall, it was possible to tune the PC membrane resistance for caffeine in a range from 5100 up to 15,100 s/cm.
| Faculties and Departments: | 05 Faculty of Science > Departement Chemie > Former Organization Units Chemistry > Makromolekulare Chemie (Meier) |
|---|---|
| UniBasel Contributors: | Meier, Wolfgang P. |
| Item Type: | Article, refereed |
| Article Subtype: | Research Article |
| Publisher: | North-Holland |
| ISSN: | 0169-4332 |
| Note: | Publication type according to Uni Basel Research Database: Journal article |
| Last Modified: | 27 Mar 2014 13:12 |
| Deposited On: | 27 Mar 2014 13:12 |
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