TY - JOUR
T1 - High performance and thermally stable PDMS pervaporation membranes prepared using a phenyl-containing tri-functional crosslinker for n-butanol recovery
AU - Lee, Ju Yeon
AU - Lee, Jong Suk
AU - Lee, Jung Hyun
N1 - Funding Information:
This research was supported by the National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIP) ( NRF-2019R1A2C1002333 , 2018R1A4A1022194 , 2017M3D3A1A01037006 and 2019M3E6A1064103 ) and Korean Ministry of Environment as “Global Top Project ( 2016002100007 )”.
PY - 2020/3/18
Y1 - 2020/3/18
N2 - Polydimethylsiloxane (PDMS) pervaporation membranes for n-butanol recovery were fabricated using various crosslinkers: a conventional tetra-functional crosslinker and tri-functional crosslinkers containing different organic (hexyl, cyclohexyl and phenyl) groups. Irrespective of the feed solution conditions, the membranes prepared using tri-functional crosslinkers exhibited a higher permeate flux than the membrane prepared using the tetra-functional crosslinker because their less crosslinked structures increased the free volume. Importantly, among the fabricated membranes, the membrane prepared using the phenyl-containing tri-functional crosslinker exhibited the highest separation factor with a remarkably high permeate flux even under high alcohol concentration and elevated temperature conditions. Its superior pervaporation performance was attributed to its highest hydrophobicity and excellent thermal stability, which are imparted by the phenyl group in the crosslinker, combined with the tri-functional structure of the crosslinker. Our proposed strategy provides an effective and facile method to fabricate high performance pervaporation membranes for alcohol recovery.
AB - Polydimethylsiloxane (PDMS) pervaporation membranes for n-butanol recovery were fabricated using various crosslinkers: a conventional tetra-functional crosslinker and tri-functional crosslinkers containing different organic (hexyl, cyclohexyl and phenyl) groups. Irrespective of the feed solution conditions, the membranes prepared using tri-functional crosslinkers exhibited a higher permeate flux than the membrane prepared using the tetra-functional crosslinker because their less crosslinked structures increased the free volume. Importantly, among the fabricated membranes, the membrane prepared using the phenyl-containing tri-functional crosslinker exhibited the highest separation factor with a remarkably high permeate flux even under high alcohol concentration and elevated temperature conditions. Its superior pervaporation performance was attributed to its highest hydrophobicity and excellent thermal stability, which are imparted by the phenyl group in the crosslinker, combined with the tri-functional structure of the crosslinker. Our proposed strategy provides an effective and facile method to fabricate high performance pervaporation membranes for alcohol recovery.
KW - Crosslinker
KW - Pervaporation membrane
KW - Polydimethylsiloxane
KW - Thermal resistance
KW - n-Butanol recovery
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U2 - 10.1016/j.seppur.2019.116142
DO - 10.1016/j.seppur.2019.116142
M3 - Article
AN - SCOPUS:85072800427
VL - 235
JO - Separation and Purification Technology
JF - Separation and Purification Technology
SN - 1383-5866
M1 - 116142
ER -