Naslov
Long-range processing correlation and morphological fractality of compatibilized blends of PS/ HDPE/ SEBS block copolymer

Autori
Jelčić, Želimir ; Vranješ, Nina ; Rek, Vesna

Izvornik
Macromolecular Symposia (1022-1360) 290 (2010); 1-14

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

Ključne riječi
PS/HDPE/SEBS blends; Hurst index; fractal; morphological structure; rheological properties; creep; mechanical properties

Sažetak
Processing and compatibilization effects of a commercially available styrene/ ethylene-butylene/ styrene (SEBS) compatibilizer on the morphological structure, rheological and mechanical properties of blends of polystyrene (PS) and high-density polyethylene (HDPE) were investigated. The rheological behaviour of the blends melt during processing was followed by measuring torque ; extrusion capacity output and melts back-pressure in a twin screw extruder. The processing parameters were decreased with the HDPE content. The results show that SEBS compatibilizer can yield compatibilization by substantially reducing torque and increasing the back-pressure. However, the Hurst indices of melt processing parameters are increased with compatibilization. Near infrared spectra have been described by the Hurst index HNIR which is then related to HDPE content in the blends. The correlation between the blend compositions, morphological structure, mechanical and rheological properties and processing parameters was established and discussed on base of correlation with the fractal indices obtained from the SEM microphotographs of PS/HDPE/SEBS blends.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo

POVEZANOST RADA