Naslov
Miscibility in thermoplastic polyurethane elastomer/poly(styrene-co-acrylonitrile) blends

Autori
Žerjal, Breda ; Jelčić, Želimir ; Malavašič, Tatjana

Izvornik
European Polymer Journal (0014-3057) 32 (1996), 11; 1351-1354

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Blends; thermoplastic polyurethane; poly(styrene-co-acrylonitrile); dielectric spectroscopy

Sažetak
Blends of a thermoplastic polyurethane (TPU) with poly(styrene-co-acrylonitrile) (SAN) were investigated by differential scanning calorimetry (DSC) and dielectric spectroscopy. Blends were prepared by kneading. A shift of the glass transition temperatures (Tg) and specific heat increments (Cp) at the Tg have shown that SAN dissolves more in the TPU-rich phase than TPU in the SAN-rich phase. From dielectric measurements it could be concluded that the relaxation processes in the TPU/SAN blends occur at the same temperatures as the relaxation processes in pure components, which suggests that the motions of TPU chains are decoupled from the motions of SAN chains. The addition of TPU to SAN copolymer causes a plasticizing effect at very low concentrations.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo

POVEZANOST RADA