Polymer-in-a-Silica-Crust Membranes: Macroporous Materials with Tunable Surface Functionality

Urmenyi, Ana M. and Philipse, Albert P. and Lammertink, Rob G.H. and Wessling, Matthias (2006) Polymer-in-a-Silica-Crust Membranes: Macroporous Materials with Tunable Surface Functionality. Langmuir, 22 (12). pp. 5459-5468. ISSN 0743-7463

PDF
Restricted to UT campus only: Request a copy
752Kb

Abstract:	We report on alkaline hydrolysis of tetraethoxysilane (Stöber synthesis) inside a macroporous polymer matrix resulting in a homogeneous coverage of silica onto the polymer surface. The encapsulation of the polymer struts by a continuous silica crust allows further functionalization with hydrophilic and hydrophobic silylating agents. The porous silica polymeric hybrid material combines the morphological control and mechanical flexibility of the polymeric matrix with the convenient surface modifications developed for glass and amorphous silica. This concept is applied to macroporous membranes where alteration in surface functionality allows tuning of hydrophobicity (contact angle and liquid entry pressure), streaming potential, and adsorption capacity of double-stranded DNA.
Item Type:	Article
Copyright:	© 2006 American Chemical Society
Faculty:	Science and Technology (TNW)
Research Group:	Membrane Science and Technology (MST)
Link to this item:	http://purl.utwente.nl/publications/57660
Official URL:	http://dx.doi.org/10.1021/la060137o
Export this item as:	BibTeX EndNote HTML Citation Reference Manager

Show download statistics for this publication

Repository Staff Only: item control page

Metis ID: 257149