TY - JOUR
T1 - Fabrication of Hollow Fiber Membranes Using Highly Viscous Liquids as Internal Coagulants
AU - Le, Ngoc Lieu
AU - Pulido, Bruno A.
AU - Nunes, Suzana Pereira
N1 - KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: The authors would like to thank King Abdullah University of Science and Technology (KAUST) for support.
PY - 2019/11/15
Y1 - 2019/11/15
N2 - Ethylene glycol (EG) and its derivatives were proposed as internal coagulants to spin hollow fiber membranes of the commercial polymer poly(ether imide) (PEI) and compared with water. The thermodynamic and kinetic characteristics of the polymer-solvent-nonsolvent systems were analyzed. The morphology and ultrafiltration performance of the resultant membranes were investigated. Water leads to a fast precipitation rate while a slow process is obtained for EG derivatives because of their high viscosity, large molecular size, and weak nonsolvent capability. The hollow fibers prepared with EG derivatives as bore fluids have thinner walls, which promote less resistance to the permeant transport. High rejections of bovine serum albumin (66 kg/mol), ovalbumin (45 kg/mol), and α-lactalbumin (14 kg/mol) were detected. The good performance combined with the nontoxicity of the EG derivatives makes them promising coagulants for membrane fabrication.
AB - Ethylene glycol (EG) and its derivatives were proposed as internal coagulants to spin hollow fiber membranes of the commercial polymer poly(ether imide) (PEI) and compared with water. The thermodynamic and kinetic characteristics of the polymer-solvent-nonsolvent systems were analyzed. The morphology and ultrafiltration performance of the resultant membranes were investigated. Water leads to a fast precipitation rate while a slow process is obtained for EG derivatives because of their high viscosity, large molecular size, and weak nonsolvent capability. The hollow fibers prepared with EG derivatives as bore fluids have thinner walls, which promote less resistance to the permeant transport. High rejections of bovine serum albumin (66 kg/mol), ovalbumin (45 kg/mol), and α-lactalbumin (14 kg/mol) were detected. The good performance combined with the nontoxicity of the EG derivatives makes them promising coagulants for membrane fabrication.
UR - http://hdl.handle.net/10754/660982
UR - https://pubs.acs.org/doi/10.1021/acs.iecr.9b05136
UR - http://www.scopus.com/inward/record.url?scp=85076398768&partnerID=8YFLogxK
U2 - 10.1021/acs.iecr.9b05136
DO - 10.1021/acs.iecr.9b05136
M3 - Article
SN - 0888-5885
VL - 58
SP - 22343
EP - 22349
JO - Industrial and Engineering Chemistry Research
JF - Industrial and Engineering Chemistry Research
IS - 49
ER -