Er. Cornelissen et al., PHYSICOCHEMICAL ASPECTS OF POLYMER SELECTION FOR ULTRAFILTRATION AND MICROFILTRATION MEMBRANES, Colloids and surfaces. A, Physicochemical and engineering aspects, 138(2-3), 1998, pp. 283-289
The concept of additivity of surface tension components has been used
to predict the adsorptive fouling tendency of membranes. The calculate
d value for the free energy of adhesion Delta G(LWS) is taken as a mea
sure for this fouling tendency. Delta G(LWS) values can be determined
from the surface tension components of the solid and liquid. The deter
mination of the surface tension components of the solid surfaces has b
een carried out using sessile drop contact angle measurements with wat
er, glycerol and alpha-bromonaphthalene. Delta G(LWS) values have been
determined for human serum albumin (HSA) and polyethyleneglycol (PEG)
on ten different non-porous polymer surfaces and it has been calculat
ed that cellulose acetate (CA) and polyacrylonitrile (PAN) showed the
lowest fouling tendency, whereas polyethersulfone (PES) and polyvinyli
denedifluoride (PVDF) showed the highest fouling tendencies. (C) 1998
Elsevier Science B.V.