TY - GEN
T1 - Sol-Gel synthesized nanostructured silica particles for application in gas transport properties of PU-PDMS based mixed-matrix membranes
AU - Semsarzadeh, Mohammad Ali
AU - Vakili, Eshagh
AU - Fardi, Milad
AU - Ghalei, Behnam
PY - 2014
Y1 - 2014
N2 - New Silicon based nanostructures particles were successfully synthesized by tetraethoxysilane (TEOS) as silica precursor, mixture of two copolymers of PPG-b-PPE-b-PPG and PEO-b-PPG-b-PEO (Plutonic) as templates. PU-PDMS and PU-PDMS/silica composite membranes were prepared by solution casting technique. Synthesized mesoporus silica particles and hybrid membranes were characterized using Nitrogen adsorption-desorption (BET), transmission electron microscopy (TEM) and scanning electron microscopy (SEM). As confirmed by BET analysis, the mean pore diameters of SPB1,2 Silicon particles are around 9 nm. The SEM micrographs confirmed the nano-scale distribution of silica particles in the polymer matrix. Gas permeation of PUPDMS/ silica hybrid membranes with silica contents of 5, 10 and 20 wt.% was studied for N2, CO2 and He single gases at8 bar. The obtained results suggest a significant increase in permeability of all gases upon increasing the silica particles content. The possible reasons for such behavior were stated and discussed.
AB - New Silicon based nanostructures particles were successfully synthesized by tetraethoxysilane (TEOS) as silica precursor, mixture of two copolymers of PPG-b-PPE-b-PPG and PEO-b-PPG-b-PEO (Plutonic) as templates. PU-PDMS and PU-PDMS/silica composite membranes were prepared by solution casting technique. Synthesized mesoporus silica particles and hybrid membranes were characterized using Nitrogen adsorption-desorption (BET), transmission electron microscopy (TEM) and scanning electron microscopy (SEM). As confirmed by BET analysis, the mean pore diameters of SPB1,2 Silicon particles are around 9 nm. The SEM micrographs confirmed the nano-scale distribution of silica particles in the polymer matrix. Gas permeation of PUPDMS/ silica hybrid membranes with silica contents of 5, 10 and 20 wt.% was studied for N2, CO2 and He single gases at8 bar. The obtained results suggest a significant increase in permeability of all gases upon increasing the silica particles content. The possible reasons for such behavior were stated and discussed.
KW - Gas permeability
KW - Membrane
KW - Nanostructures silica particles
KW - PU-PDMS
UR - https://www.scopus.com/pages/publications/84891543213
UR - https://www.scopus.com/pages/publications/84891543213#tab=citedBy
U2 - 10.4028/www.scientific.net/AMR.829.862
DO - 10.4028/www.scientific.net/AMR.829.862
M3 - Conference contribution
AN - SCOPUS:84891543213
SN - 9783037859070
T3 - Advanced Materials Research
SP - 862
EP - 866
BT - Ultrafine Grained and Nano-Structured Materials IV
T2 - 4th International Conference on Ultrafine Grained and Nano-Structured Materials, UFGNSM 2013
Y2 - 5 November 2013 through 6 November 2013
ER -