F. Carrasco et al., STUDY BY FT-IR SPECTROPHOTOMETRY OF THE I NTERFACIAL INTERACTIONS IN PS SBS POLYMER COMPOUNDS/, Afinidad, 53(463), 1996, pp. 199-203
In this work, Fourier Transform Infrared Spectrophotometry (FT-i.r.) h
as been used to measure the interfacial interactions in thermoplastic
blends composed of diferents amounts of polystyrene (PS) matrix and th
e copolymer poly(styrene-butadiene) (SBS), acting as an elastomeric fi
ller. In order to detect various interaction levels, samples have been
prepared according to three different methods: solid samples (the ble
nd is achieved in solid state, leading to a zero interaction level), e
xtruded-injected samples (the interaction should be intermediate betwe
en that in solid and film samples) and film samples (dissolution of ex
truded-injected samples with further solvent evaporation, leading to a
maximum interaction level). By thoroughly analyzing the displacements
of the maximum absorption intensities within various spectral areas,
the presence of interfacial interactions has been detected as a functi
on of the elastomeric phase content in the polymeric blend.