Droplet deformation throughout polymer processing induces various morphologies which causes sundry characteristics. It is well known that rheology plays a key role in polymer processing. Appearing a secondary plateau at low frequencies implies existence of longer relaxation times compared to samples manifesting terminal behavior. The objective of this work is to trace droplet deformation by conducting fiber spinning process. In this regard, two types of polymer blends Polypropylene (PP)/Polyamide6 (PA6) and Polypropylene/Polytrimethylene terephthalate (PTT) with various ratios (99/1, 94/6, 90/10, 80/20) were melt blended on twin screw extruder and thereafter, were spun. Morphological characterization was obtained by scanning electron microscopy (SEM) and as-extruded samples manifested droplet morphology and spun blend fibers showed fibrillar morphology prevalent throughout the PP matrix. Linear melt viscoelastic data were gathered by performing rheological approaches in linear region. Dynamic storage modulus of fibers represented a secondary plateau at low frequencies which was distinct from as-extruded samples and complex viscosity showed a viscosity upturn upon fibril maturation.