TY  - CONF
AU  - Dragosavac, Marijana M.
AU  - Vladisavljević, Goran T.
AU  - Holdich, Richard G.
AU  - Stillwell, Michael T.
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6980
AB  - A membrane emulsification method for production of monodispersed silica-based ion exchange particles through water-in-oil emulsion route is developed. A hydrophobic microsieve membrane with 15 mu m pore size and 200 pm pore spacing was used to produce droplets, with a mean size between 65 and 240 pm containing acidified sodium silicate solution (with 4 and 6 wt% SiO2) in kerosene. After drying, the final silica particles had a mean size in the range between 30 and 70 mu m. Coefficient of variation for both the droplets and particles did not exceed 35%. The most uniform particles had a mean diameter of 40 mu m and coefficient of variation of 17%. The particles were functionalised with 3-aminopropyltrimethoxysilane and used for chemisorption of Cu(II) from an aqueous solution of CuSO4 in a continuous flow stirred cell with slotted pore microfiltration membrane. Functionalised silica particles showed a higher binding affinity toward Cu(II) than nontreated silica particles.
C3  - Progress in Colloid and Polymer Science
T1  - Novel Membrane Emulsification Method of Producing Highly Uniform Silica Particles Using Inexpensive Silica Sources
VL  - 139
SP  - 7
EP  - +
DO  - 10.1007/978-3-642-28974-3_2
ER  - 

@conference{
author = "Dragosavac, Marijana M. and Vladisavljević, Goran T. and Holdich, Richard G. and Stillwell, Michael T.",
year = "2012",
abstract = "A membrane emulsification method for production of monodispersed silica-based ion exchange particles through water-in-oil emulsion route is developed. A hydrophobic microsieve membrane with 15 mu m pore size and 200 pm pore spacing was used to produce droplets, with a mean size between 65 and 240 pm containing acidified sodium silicate solution (with 4 and 6 wt% SiO2) in kerosene. After drying, the final silica particles had a mean size in the range between 30 and 70 mu m. Coefficient of variation for both the droplets and particles did not exceed 35%. The most uniform particles had a mean diameter of 40 mu m and coefficient of variation of 17%. The particles were functionalised with 3-aminopropyltrimethoxysilane and used for chemisorption of Cu(II) from an aqueous solution of CuSO4 in a continuous flow stirred cell with slotted pore microfiltration membrane. Functionalised silica particles showed a higher binding affinity toward Cu(II) than nontreated silica particles.",
journal = "Progress in Colloid and Polymer Science",
title = "Novel Membrane Emulsification Method of Producing Highly Uniform Silica Particles Using Inexpensive Silica Sources",
volume = "139",
pages = "7-+",
doi = "10.1007/978-3-642-28974-3_2"
}

Dragosavac, M. M., Vladisavljević, G. T., Holdich, R. G.,& Stillwell, M. T.. (2012). Novel Membrane Emulsification Method of Producing Highly Uniform Silica Particles Using Inexpensive Silica Sources. in Progress in Colloid and Polymer Science, 139, 7-+.
https://doi.org/10.1007/978-3-642-28974-3_2

Dragosavac MM, Vladisavljević GT, Holdich RG, Stillwell MT. Novel Membrane Emulsification Method of Producing Highly Uniform Silica Particles Using Inexpensive Silica Sources. in Progress in Colloid and Polymer Science. 2012;139:7-+.
doi:10.1007/978-3-642-28974-3_2 .

Dragosavac, Marijana M., Vladisavljević, Goran T., Holdich, Richard G., Stillwell, Michael T., "Novel Membrane Emulsification Method of Producing Highly Uniform Silica Particles Using Inexpensive Silica Sources" in Progress in Colloid and Polymer Science, 139 (2012):7-+,
https://doi.org/10.1007/978-3-642-28974-3_2 . .

TY  - JOUR
AU  - Dragosavac, Marijana M.
AU  - Vladisavljević, Goran T.
AU  - Holdich, Richard G.
AU  - Stillwell, Michael T.
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4644
AB  - A method for the production of near-monodispersed spherical silica particles with controllable porosity based on the formation of uniform emulsion droplets using membrane emulsification is described. A hydrophobic metal membrane with a 15 mu m pore size and 200 mu m pore spacing was used to produce near-monodispersed droplets, with a mean size that could be controlled between 65 and 240 mu m containing acidified sodium silicate solution (with 4 and 6 wt % SiO(2)) in kerosene. After drying and shrinking, the final silica particles had a mean size in the range between 30 and 70 mu m. The coefficient of variation for both the droplets and the particles did not exceed 35%. The most uniform particles had a mean diameter of 40 mu m and coefficient of variation of 17%. By altering the pH of the sodium silicate solution and aging the gel particles in water or acetone, the internal structure of the silica particles was successfully modified, and both micro- and mesoporous near-monodispersed spherical particles were produced with an average internal pore size between 1 and 6 nm and an average surface area between 360 and 750 m(2) g(-1). A material balance and particle size analysis provided identical values for the internal voidage of the particles, when compared to the voidage as determined by BET analysis.
T2  - Langmuir
T1  - Production of Porous Silica Microparticles by Membrane Emulsification
VL  - 28
IS  - 1
SP  - 134
EP  - 143
DO  - 10.1021/la202974b
ER  - 

@article{
author = "Dragosavac, Marijana M. and Vladisavljević, Goran T. and Holdich, Richard G. and Stillwell, Michael T.",
year = "2012",
abstract = "A method for the production of near-monodispersed spherical silica particles with controllable porosity based on the formation of uniform emulsion droplets using membrane emulsification is described. A hydrophobic metal membrane with a 15 mu m pore size and 200 mu m pore spacing was used to produce near-monodispersed droplets, with a mean size that could be controlled between 65 and 240 mu m containing acidified sodium silicate solution (with 4 and 6 wt % SiO(2)) in kerosene. After drying and shrinking, the final silica particles had a mean size in the range between 30 and 70 mu m. The coefficient of variation for both the droplets and the particles did not exceed 35%. The most uniform particles had a mean diameter of 40 mu m and coefficient of variation of 17%. By altering the pH of the sodium silicate solution and aging the gel particles in water or acetone, the internal structure of the silica particles was successfully modified, and both micro- and mesoporous near-monodispersed spherical particles were produced with an average internal pore size between 1 and 6 nm and an average surface area between 360 and 750 m(2) g(-1). A material balance and particle size analysis provided identical values for the internal voidage of the particles, when compared to the voidage as determined by BET analysis.",
journal = "Langmuir",
title = "Production of Porous Silica Microparticles by Membrane Emulsification",
volume = "28",
number = "1",
pages = "134-143",
doi = "10.1021/la202974b"
}

Dragosavac, M. M., Vladisavljević, G. T., Holdich, R. G.,& Stillwell, M. T.. (2012). Production of Porous Silica Microparticles by Membrane Emulsification. in Langmuir, 28(1), 134-143.
https://doi.org/10.1021/la202974b

Dragosavac MM, Vladisavljević GT, Holdich RG, Stillwell MT. Production of Porous Silica Microparticles by Membrane Emulsification. in Langmuir. 2012;28(1):134-143.
doi:10.1021/la202974b .

Dragosavac, Marijana M., Vladisavljević, Goran T., Holdich, Richard G., Stillwell, Michael T., "Production of Porous Silica Microparticles by Membrane Emulsification" in Langmuir, 28, no. 1 (2012):134-143,
https://doi.org/10.1021/la202974b . .