TY - JOUR
T1 - Using atom transfer radical polymerization for the synthesis of grafted PVDF copolymers towards the synthesis of membranes
AU - Sermili, Sarit
AU - Eisen, Moris S.
N1 - Copyright:
Copyright 2012 Elsevier B.V., All rights reserved.
PY - 2012/4
Y1 - 2012/4
N2 - Graft copolymers of poly(vinylidene fluoride) (PVDF) with poly(3-sulfopropyl methacrylic acid) (PVDF-g-PSPMA), poly(styrene-4-sulfonic acid) (PVDF-g-PSSA), and poly(dimethylaminoethyl methacrylate) (PDVFg-PDMAEMA) were synthesized. The aforementioned grafted copolymers were prepared from the corresponding (PDVF-g-PSPMPS) poly(3-sulfopropyl methacrylate potassium) and (PVDF-g-PSSS) poly(styrene-4-sulfonate sodium) salts using PVDF as a macroinitiator for atom transfer radical polymerization (ATRP). The copolymers were casted into membranes by the phase inversion method in aqueous media. The effects of polymerization time, degree of conversion, chain transfer agent (CTA) additive, crosslink process, and various solvents were investigated. The products were characterized by 1H and 13C NMR spectroscopy, IR spectroscopy, differential scanning calorimetry (DSC), and scanning electron microscopy (SEM). The maximum grafting incorporation was up to 26, 20 and 20 wt % for PSSA, PSPMA and PDMAEMA, respectively. The incorporation was reduced using a CTA additive. The most impressive feature of the graft copolymer membranes produced in this study are the improved water fluxes and polyethylene glycol (PEG) rejection properties when compared to the commercially available, pristine PVDF.
AB - Graft copolymers of poly(vinylidene fluoride) (PVDF) with poly(3-sulfopropyl methacrylic acid) (PVDF-g-PSPMA), poly(styrene-4-sulfonic acid) (PVDF-g-PSSA), and poly(dimethylaminoethyl methacrylate) (PDVFg-PDMAEMA) were synthesized. The aforementioned grafted copolymers were prepared from the corresponding (PDVF-g-PSPMPS) poly(3-sulfopropyl methacrylate potassium) and (PVDF-g-PSSS) poly(styrene-4-sulfonate sodium) salts using PVDF as a macroinitiator for atom transfer radical polymerization (ATRP). The copolymers were casted into membranes by the phase inversion method in aqueous media. The effects of polymerization time, degree of conversion, chain transfer agent (CTA) additive, crosslink process, and various solvents were investigated. The products were characterized by 1H and 13C NMR spectroscopy, IR spectroscopy, differential scanning calorimetry (DSC), and scanning electron microscopy (SEM). The maximum grafting incorporation was up to 26, 20 and 20 wt % for PSSA, PSPMA and PDMAEMA, respectively. The incorporation was reduced using a CTA additive. The most impressive feature of the graft copolymer membranes produced in this study are the improved water fluxes and polyethylene glycol (PEG) rejection properties when compared to the commercially available, pristine PVDF.
KW - atom transfer radical polymerization
KW - chain transfer agents
KW - graft copolymers
KW - membranes
KW - phase inversion
UR - http://www.scopus.com/inward/record.url?scp=84860246967&partnerID=8YFLogxK
U2 - 10.1002/ijch.201100126
DO - 10.1002/ijch.201100126
M3 - 文章
AN - SCOPUS:84860246967
VL - 52
SP - 347
EP - 358
JO - Israel Journal of Chemistry
JF - Israel Journal of Chemistry
SN - 0021-2148
IS - 3-4
ER -