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Microstructural Aspects of Particle-Assisted Breath Figures in Polystyrene–Alumina Hybrid Free Standing Film

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dc.contributor.author Lakshmi, V
dc.contributor.author Ramya, R
dc.contributor.author Annu, R
dc.contributor.author Rajan, T P D
dc.contributor.author Pavithran, C
dc.date.accessioned 2018-06-07T06:32:54Z
dc.date.available 2018-06-07T06:32:54Z
dc.date.issued 2017-06-26
dc.identifier.citation The Journal of Physical Chemistry:C, 121(28):15154-15159 en_US
dc.identifier.uri http://10.10.100.66:8080/xmlui/handle/123456789/3099
dc.description.abstract 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 the formation of amino-functionalized cavities. The surface density of the amino functionality reduced on increasing the film thickness, whereas the density increased with the particle concentration. The implications were discussed. en_US
dc.language.iso en en_US
dc.publisher American Chemical Society en_US
dc.title Microstructural Aspects of Particle-Assisted Breath Figures in Polystyrene–Alumina Hybrid Free Standing Film en_US
dc.type Article en_US


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