Microstructural Aspects of Particle-Assisted Breath Figures in Polystyrene–Alumina Hybrid Free Standing Film
| Autor: | Ramya Rajan, Lakshmi Vijaya, T. P. D. Rajan, Annu Raju, C. Pavithran |
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| Rok vydání: | 2017 |
| Předmět: |
Pore size
Chloroform Materials science 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials law.invention chemistry.chemical_compound General Energy chemistry Magazine law Particle Polystyrene Physical and Theoretical Chemistry Composite material 0210 nano-technology Suspension (vehicle) Science technology and society Porosity |
| Zdroj: | The Journal of Physical Chemistry C. 121:15154-15159 |
| ISSN: | 1932-7455 1932-7447 |
| Popis: | Polystyrene–alumina hybrid free standing films with amino-functionalized breath figure (BF) cavities were fabricated from a suspension of the amino-functionalized amphiphilic-modified alumina particles in polystyrene/chloroform solution by employing a one-step casting process. The role of the film thickness and the particle concentration on the BF microstructural aspects such as the pore size, pore density, amino group surface density, etc. was reported. The dry film thickness increased from 0.91 to 5.6 μm on increasing the wet film thickness from 0.2 to 1 mm. The pore size increased with the film thickness, while the pore density and the porosity decreased. Relatively uniform pore size was observed for an ∼3 μm thick film in which the moderately ordered BF pattern was more or less maintained up to a particle concentration of 5 wt % of the polystyrene content. While the 0.91 μm thick film exhibited through-pore structure, concavities were formed in thicker films. The particle-assisted BF formation favored... |
| Databáze: | OpenAIRE |
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