Abstract
In this study, syndiotactic Polypropylene/Starch (sPP/starch) composites were prepared using a solution mixing technique. The thermal characterization was performed using Differential Scanning Calorimetry (DSC), and the melting point was measured for all polymer composites. The thermal degradation temperature was measured using thermal gravimetric analysis. The viscoelastic measurements were performed using the Atomic Rheometric Expansion System (ARES). Both melting point and thermal degradation temperatures were found to decrease with increasing starch content. Moreover, the elastic modulus was found to decrease when the starch content increased.
Highlights
Polymer composites are synthesized by embedding natural or synthetic materials into a polymer to increase its desired properties [1, 2]
Rheology is used as a tool to study a polymer's or a polymer composite's microstructure, as the rheological response is highly sensitive to the molecular structure of polymers and their composites [59]
The current study examines the viscoelasticity of syndiotactic polypropylene/starch composites, with starch content ranging from 0 to 8%, using an Atomic Rheometric Expansion System (ARES) to investigate the effect of starch content on the melt rheological response of composites
Summary
Polymer composites are synthesized by embedding natural or synthetic materials into a polymer to increase its desired properties [1, 2]. The rheological properties of polyethylene oxide/montmorillonite clay gels and multilayered films were studied in [14], using an Atomic Rheometric Expansion system (ARE-2 rheometer), and noticing a slight increase in both the loss modulus (G') and the storage modulus (G'') when increasing the clay content. The viscoelastic properties of syndiotactic polypropylene (sPP) were investigated in [16], examining the effect of the degree of syndiotacticity on the rheological parameters, including plateau modulus and entanglement molecular weight. The current study examines the viscoelasticity of syndiotactic polypropylene/starch composites (sPP/starch), with starch content ranging from 0 to 8%, using an Atomic Rheometric Expansion System (ARES) to investigate the effect of starch content on the melt rheological response of composites
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