Details
| Original language | English |
|---|---|
| Pages (from-to) | 305-311 |
| Number of pages | 7 |
| Journal | Colloid and polymer science |
| Volume | 286 |
| Issue number | 3 |
| Publication status | Published - 10 Jan 2008 |
Abstract
Differently shaped reaction areas for silica deposition were created by photochemical grafting of hydrophobic poly(acrylic acid 2-ethyl-hexylester) as barrier and a hydrophilic polymer employing a mask having hexagons, pentagons, squares and stripes. Poly(ethylene glycol), poly(acrylic acid), branched and linear poly(ethylene imine) and linear poly(methylpropylene imine) have been applied as hydrophilic polymer in the reaction area. These patterned films have been used in silica mineralization experiments by dipping them into a silica precursor solution. Investigations of the polymer films and silica depositions have been done by contact angle measurements, ellipsometry and scanning electron microscopy (SEM). Silica deposition occurs only in the hydrophilically coated areas, resulting in regular arrays of lens-like silica particles. There are only minor differences due to the shape of the reaction area. The influence of the different hydrophilic polymers can be explained by their wetting behaviour.
Keywords
- Hydrophilic areas, Photochemical grafting, Silica deposition, Surface patterning
ASJC Scopus subject areas
- Chemistry(all)
- Physical and Theoretical Chemistry
- Materials Science(all)
- Polymers and Plastics
- Chemical Engineering(all)
- Colloid and Surface Chemistry
- Materials Science(all)
- Materials Chemistry
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In: Colloid and polymer science, Vol. 286, No. 3, 10.01.2008, p. 305-311.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Influence of shape and surface properties of microstructured reaction areas on the deposition of silica
AU - Helmecke, Olaf
AU - Menneking, Christin
AU - Behrens, Peter
AU - Menzel, Henning
N1 - Funding information: The authors would like to thank Prof. A. Waag and M. Karsten (Institute of Semiconductor Technology, Braunschweig University of Technology) for the preparation of the mask and A. Scherbarth for SEM measurements. This work was supported in the scope of the Priority Research Program 1117 “Principles of Biomineralization” by the Deutsche Forschungsgemeinschaft (DFG).
PY - 2008/1/10
Y1 - 2008/1/10
N2 - Differently shaped reaction areas for silica deposition were created by photochemical grafting of hydrophobic poly(acrylic acid 2-ethyl-hexylester) as barrier and a hydrophilic polymer employing a mask having hexagons, pentagons, squares and stripes. Poly(ethylene glycol), poly(acrylic acid), branched and linear poly(ethylene imine) and linear poly(methylpropylene imine) have been applied as hydrophilic polymer in the reaction area. These patterned films have been used in silica mineralization experiments by dipping them into a silica precursor solution. Investigations of the polymer films and silica depositions have been done by contact angle measurements, ellipsometry and scanning electron microscopy (SEM). Silica deposition occurs only in the hydrophilically coated areas, resulting in regular arrays of lens-like silica particles. There are only minor differences due to the shape of the reaction area. The influence of the different hydrophilic polymers can be explained by their wetting behaviour.
AB - Differently shaped reaction areas for silica deposition were created by photochemical grafting of hydrophobic poly(acrylic acid 2-ethyl-hexylester) as barrier and a hydrophilic polymer employing a mask having hexagons, pentagons, squares and stripes. Poly(ethylene glycol), poly(acrylic acid), branched and linear poly(ethylene imine) and linear poly(methylpropylene imine) have been applied as hydrophilic polymer in the reaction area. These patterned films have been used in silica mineralization experiments by dipping them into a silica precursor solution. Investigations of the polymer films and silica depositions have been done by contact angle measurements, ellipsometry and scanning electron microscopy (SEM). Silica deposition occurs only in the hydrophilically coated areas, resulting in regular arrays of lens-like silica particles. There are only minor differences due to the shape of the reaction area. The influence of the different hydrophilic polymers can be explained by their wetting behaviour.
KW - Hydrophilic areas
KW - Photochemical grafting
KW - Silica deposition
KW - Surface patterning
UR - http://www.scopus.com/inward/record.url?scp=40449128245&partnerID=8YFLogxK
U2 - 10.1007/s00396-007-1743-4
DO - 10.1007/s00396-007-1743-4
M3 - Article
AN - SCOPUS:40449128245
VL - 286
SP - 305
EP - 311
JO - Colloid and polymer science
JF - Colloid and polymer science
SN - 0303-402X
IS - 3
ER -