Header

UZH-Logo

Maintenance Infos

Tuning the resistance of polycarbonate membranes by plasma-induced graft surface modification


Baumann, Lukas; Hegemann, Dirk; de Courten, Damien; Wolf, Martin; Rossi, René M; Meier, Wolfgang P; Scherer, Lukas J (2013). Tuning the resistance of polycarbonate membranes by plasma-induced graft surface modification. Applied Surface Science, 268:450-457.

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.

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.

Statistics

Citations

11 citations in Web of Science®
12 citations in Scopus®
Google Scholar™

Altmetrics

Downloads

2 downloads since deposited on 30 Jul 2013
0 downloads since 12 months
Detailed statistics

Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > University Hospital Zurich > Clinic for Neonatology
Dewey Decimal Classification:610 Medicine & health
Language:English
Date:2013
Deposited On:30 Jul 2013 12:39
Last Modified:05 Apr 2016 16:53
Publisher:Elsevier
ISSN:0169-4332
Publisher DOI:https://doi.org/10.1016/j.apsusc.2012.12.125

Download

Preview Icon on Download
Content: Published Version
Filetype: PDF - Registered users only
Size: 1MB
View at publisher