Influence of phenol on polymer adsorption at solid-liquid
interfaces
Curt Thies.tmp)
Materials Research Laboratories,
Central Research Division, The National Cash Register Co., Dayton, Ohio 45409,
USA
Received 31 January 1968. Available online 6
July 2004.
Abstract
The influence of phenol on adsorption of poly(vinyl acetate) (PVAc) and a
poly-(ethylene-vinyl acetate) (EVA) copolymer (28.8% vinyl acetate) on finely
divided silica has been studied (24°C). Although phenol adsorbs on silica from
trichloroethylene (C2HCl3) and cyclohexane (C6H12) in the absence of
polymer, concentrations .tmp)
0.12 M cause only
slight reductions in EVA and PVAc adsorbance. On a molar basis, phenol has less effect on
polymer adsorbance than had been observed previously
for methanol and cyclòhexanol. Based on changes in the
carbonyl ester bands of PVAc and EVA caused by phenol,
it interacts more extensively with both polymers in solution than any additive
examined to date. Thus, polymer-additive interactions in solution detected spectroscopically are not necessarily directly related to
the effect that the additive has on polymer adsorption. This may be related to
the fact that phenol adsorbs simultaneously with EVA from
C6H12 in such a manner that a silica surface nearly
saturated with adsorbed phenol accommodates substantial quantities of EVA.