TY - JOUR
T1 - Water-alcohol separation by pervaporation through chemically modified poly(amidesulfonamide)s
AU - CHAN, Wing Hong
AU - Ng, Ching Fai
AU - Lam-Leung, Suei Yee
AU - He, Xumin
N1 - Funding Information:
The work described in this paper was fully supported by a grant from the Research Grants Council of the Hong Kong Special Administration Region, China (Project no. HKBC 128/94P).
PY - 1999/7/15
Y1 - 1999/7/15
N2 - Five N-alkylated derivatives of a poly(amidesulfonamide) polymerized from N,N'-bis-4-aminophenylsulfonyl 1,3-diaminopropane and isophthaloyl chloride were synthesized. The new polymeric materials were used to prepare nonporous symmetric membranes. The membranes were characterized by IR spectroscopy, sorption measurements and wide-angle X-ray diffraction. During the pervaporation of 10% aqueous solutions of methanol, ethanol, propan-1-ol and propan-2-ol, membranes made from the parent and modified poly(amidesulfonamide)s were preferentially permeable to water and their separation factors were mainly dependent on the molecular weight of the permeant. By introducing an alkyl pending group to the backbone of the polymer, all modified membranes exhibited an enhancement in flux rate and a variation in separation factor in the pervaporation of aqueous alcohols. In the dehydration of ethanol, several modified membranes possessed separation characteristics that appeared to be superior to that of the parent membrane. Copyright (C) 1999 Elsevier Science B.V.
AB - Five N-alkylated derivatives of a poly(amidesulfonamide) polymerized from N,N'-bis-4-aminophenylsulfonyl 1,3-diaminopropane and isophthaloyl chloride were synthesized. The new polymeric materials were used to prepare nonporous symmetric membranes. The membranes were characterized by IR spectroscopy, sorption measurements and wide-angle X-ray diffraction. During the pervaporation of 10% aqueous solutions of methanol, ethanol, propan-1-ol and propan-2-ol, membranes made from the parent and modified poly(amidesulfonamide)s were preferentially permeable to water and their separation factors were mainly dependent on the molecular weight of the permeant. By introducing an alkyl pending group to the backbone of the polymer, all modified membranes exhibited an enhancement in flux rate and a variation in separation factor in the pervaporation of aqueous alcohols. In the dehydration of ethanol, several modified membranes possessed separation characteristics that appeared to be superior to that of the parent membrane. Copyright (C) 1999 Elsevier Science B.V.
KW - Chemical modification
KW - Pervaporation
KW - Poly(amidesulfonamide)s
KW - Water-alcohol separation
UR - http://www.scopus.com/inward/record.url?scp=0032993230&partnerID=8YFLogxK
U2 - 10.1016/S0376-7388(99)00079-4
DO - 10.1016/S0376-7388(99)00079-4
M3 - Journal article
AN - SCOPUS:0032993230
SN - 0376-7388
VL - 160
SP - 77
EP - 86
JO - Journal of Membrane Science
JF - Journal of Membrane Science
IS - 1
ER -