This paper studies the styrene-(mono-ethyl-maleate) copolymer using IR spec
troscopy. The copolymer was obtained by styrene copolymerization with malei
c anhydride, in ethanol as the reaction medium. The IR spectra recorded giv
e information concerning the physico-chemical structure, the monomer ratio
and emphasize the intermolecular interactions corresponding to the hydrogen
bond associations. The elevated temperature studies (90-130 degrees C) all
owed us to establish the equilibrium constants, the enthalphy and entropy v
ariation, values of -4.2 kcal mol(-1) and -3.7 e.u. mol(-1), respectively,
being obtained. (C) 1999 Kluwer Academic Publishers.