TY - JOUR
T1 - Fabrication of block copolymer membranes via SNIPS process
AU - Woo, Sanghoon
AU - Kim, Jinhee
AU - Lee, Jung-hyun
AU - Bang, Joona
PY - 2017/4/1
Y1 - 2017/4/1
N2 - In this work, we fabricated PS-b-P4VP block copolymer membranes from self-assembly and non-solvent induced phase separation (SNIPS), which combines the block copolymer self-assembly and conventional NIPS process. While previous studies mostly focused on the fabrication of well-defined structures, we systematically examined various processing parameters such as polymer concentration, solvent evaporation duration, solvent composition, and humidity, to optimized the membrane structures. As a result, the morphology of PS-b-P4VP membranes was optimized at a certain polymer concentration in solution and composition of volatile solvent at low humidity conditions, resulting in SNIPS separation membranes with well-defined nanopores on the surface, 75% of membrane porosity, and 18% of surface porosity.
AB - In this work, we fabricated PS-b-P4VP block copolymer membranes from self-assembly and non-solvent induced phase separation (SNIPS), which combines the block copolymer self-assembly and conventional NIPS process. While previous studies mostly focused on the fabrication of well-defined structures, we systematically examined various processing parameters such as polymer concentration, solvent evaporation duration, solvent composition, and humidity, to optimized the membrane structures. As a result, the morphology of PS-b-P4VP membranes was optimized at a certain polymer concentration in solution and composition of volatile solvent at low humidity conditions, resulting in SNIPS separation membranes with well-defined nanopores on the surface, 75% of membrane porosity, and 18% of surface porosity.
KW - Block copolymer membrane
KW - PS-b-P4VP
KW - Relative humidity
KW - SNIPS
UR - http://www.scopus.com/inward/record.url?scp=85016929535&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85016929535&partnerID=8YFLogxK
U2 - 10.9713/kcer.2017.55.2.214
DO - 10.9713/kcer.2017.55.2.214
M3 - Article
AN - SCOPUS:85016929535
SN - 0304-128X
VL - 55
SP - 214
EP - 219
JO - Korean Chemical Engineering Research
JF - Korean Chemical Engineering Research
IS - 2
ER -