Melt Rheological Properties of PBT/SEBS and Reactively Compatibilized PBT/SEBS/SEBS-g-MA Polymer Blends

作者：Sharma Rajul; Maiti Saurindra Nath^*

来源：Journal of Applied Polymer Science, 2015, 132(5): 41402.

DOI：10.1002/app.41402

• blends
• compatibilization
• rheology
• viscosity
• viscoelasticity

Melt rheological properties of PBT/SEBS and PBT/SEBS/SEBS-g-MA blends at SEBS volume fraction (phi(d))=0.00-0.38 were studied at 240 degrees C, 250 degrees C and 260 degrees C using a capillary rheometer. The compatibilizer SEBS-g-MA addition resulted in significant reduction in the dynamic interfacial tension which in turn led to increased phase adhesion. The power law exponent n decreased with increasing phi(d) and increasing temperature for both the compatiblized and uncompatiblized blends. The consistency index of PBT/SEBS increased with increasing phi(d) but were smaller than those of PBT/SEBS/SEBS-g-MA blends. Melt elasticity such as die swell and first normal stress difference increased with phi(d). Variations of first normal stress coefficie

• 出版日期2015-2-5