Study of the Thermal, Mechanical and Melt Rheological Properties of Rice Straw Filled Poly (Butylene Succinate) Bio-comp
- PDF / 3,436,201 Bytes
- 12 Pages / 595.276 x 790.866 pts Page_size
- 70 Downloads / 163 Views
ORIGINAL PAPER
Study of the Thermal, Mechanical and Melt Rheological Properties of Rice Straw Filled Poly (Butylene Succinate) Bio‑composites Through Reactive Extrusion Process Sayan Kumar Bhattacharjee1 · Gourhari Chakraborty1 · Sourav Pratim Kashyap1 · Raghvendra Gupta1 · Vimal Katiyar1 Accepted: 11 November 2020 © Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract The present study involved valorisation of rice straw (RS) in the form of rice straw flour (RSF) for the fabrication of poly (butylene succinate) (PBS) based bio-composites through a melt extrusion method, using dicumyl peroxide (DCP) as the cross-networking agent, and study of the morphological, thermal, mechanical and rheological behaviours of the extruded biocomposites. A layered like morphology with good dispersion of RSF in the PBS matrix was observed from X-ray diffraction and field emission scanning electron microscopic analysis. Thermo gravimetric analysis showed that the incorporation of RSF improved the thermal stability of PBS, whereas the value of the different thermal properties i.e. glass transition temperature (Tg), melting temperature (Tm) remained almost identical. Addition of DCP (2 wt%) into the PBS-RSF systems increased both the tensile strength and elongation at break (EB) (%) values. Rheological investigation of the bio-composites showed that the storage modulus (G’) was less than the loss modulus (G") over the angular frequency (ω) range until crossover, corroborating the viscous behaviour of the samples. The complex viscosity, η’ was constant when ω was less than 1 rad/s for all the samples, showing Newtonian characteristics. Shear thinning behaviour was observed when ω was greater than 1 rad/s. Furthermore, no phase separation was observed from the Han plot and good compatibility was noticed from the Cole–Cole plot, which signifies good rheological properties of the fabricated bio-composites. Keywords Rice straw · Poly (butylene succinate) · Dicumyl peroxide · Bio-composites · Rheology
Introduction Production of sustainable and renewable biodegradable polymers have generated enormous interest in recent times as the conventional petroleum-derived synthetic polymers are the major source of environmental pollution and lead to massive waste management problems [1–3]. Biodegradable polymers made from renewable resources have several applications in packaging and biomedical industries [4]. Poly (butylene succinate) (PBS) is one of the most promising biodegradable aliphatic thermoplastic polyester which is chemically synthesized from two bio-based renewable monomers, 1,4-butanediol and succinic acid, through poly-condensation * Vimal Katiyar [email protected] 1
Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
reaction [5]. PBS possesses some excellent properties like melt process ability, thermal and chemical resistance in comparison to other biodegradable polymers [6, 7]. It has a melting point and glass transition temperature in the range o
Data Loading...
