TY - JOUR
T1 - Surface characterization by FTIR-ATR spectroscopy of polyethersulfone membranes-unmodified, modified and protein fouled
AU - Belfer, S.
AU - Fainchtain, R.
AU - Purinson, Y.
AU - Kedem, O.
N1 - Funding Information:
Financial support from the Ministry of Science and Charles Wolfson Charitable Foundation is gratefully acknowledged. We are grateful to Dr. J. Gilron for numerous fruitful discussions. We are indebted to Dr. V. Kolot for her help in experiments for protein adsorption. Our special thanks to Mrs. I. Mureinik for editing the manuscript.
PY - 2000/7/1
Y1 - 2000/7/1
N2 - Polyethersulfone (PES) ultrafiltration membranes were modified by radical grafting with the aid of redox initiators to create new functional groups on the surface. Methacrylate-based monomers were used. The modified membrane surfaces were characterized by FTIR-ATR spectroscopy to detect chemical changes during modification. In addition to the common adsorption bands of carbonyl groups typical for all grafted polymers, the FTIR spectrum displayed new absorption bands in the region of aliphatic stretching vibration of the modified PES membrane (2921-2875cm-1), a region lacking absorption bands in the spectrum of the original membrane. It was also shown that the ATR technique enables recognition of the adsorption of albumin on the surface of the membranes. Preliminary results indicate, that spectral techniques such as subtracting and deconvolution could be applied in order to recognize the conformation of the adsorbed albumin. Copyright (C) 2000 Elsevier Science B.V.
AB - Polyethersulfone (PES) ultrafiltration membranes were modified by radical grafting with the aid of redox initiators to create new functional groups on the surface. Methacrylate-based monomers were used. The modified membrane surfaces were characterized by FTIR-ATR spectroscopy to detect chemical changes during modification. In addition to the common adsorption bands of carbonyl groups typical for all grafted polymers, the FTIR spectrum displayed new absorption bands in the region of aliphatic stretching vibration of the modified PES membrane (2921-2875cm-1), a region lacking absorption bands in the spectrum of the original membrane. It was also shown that the ATR technique enables recognition of the adsorption of albumin on the surface of the membranes. Preliminary results indicate, that spectral techniques such as subtracting and deconvolution could be applied in order to recognize the conformation of the adsorbed albumin. Copyright (C) 2000 Elsevier Science B.V.
KW - Albumin adsorption
KW - FTIR-ATR spectroscopy
KW - Grafting of methacrylates
KW - Redox initiation of grafting
KW - Surface modification of UF membranes
UR - http://www.scopus.com/inward/record.url?scp=0034237423&partnerID=8YFLogxK
U2 - 10.1016/S0376-7388(00)00316-1
DO - 10.1016/S0376-7388(00)00316-1
M3 - Article
AN - SCOPUS:0034237423
SN - 0376-7388
VL - 172
SP - 113
EP - 124
JO - Journal of Membrane Science
JF - Journal of Membrane Science
IS - 1-2
ER -