Abstract
This paper describes the effect of composition and extruder screw rotation on the melt viscosity, degree of crystallinity, tensile properties and morphology of composites based on green high-density polyethylene (green HDPE), polylactide (PLA) and nanosized calcium carbonate (nCaCO3). A three-level central composite rotatable design was used to establish the composite formulation. The three factors studied were screw rotation (SR; 0–100 rpm), PLA content (0–35 wt %) and nCaCO3 content (0–5 wt %). The results showed that flow behavior of the composites depends on nCaCO3 content and SR. Polylactide and nCaCO3 levels influenced the development of green HDPE crystals, and the green HDPE matrix induced PLA dispersed phase crystallization. The solvent extraction method was efficient at revealing the morphologies of the composites, indicating a well distributed PLA dispersed phase in the green HDPE matrix. Additionally, nCaCO3 content contributed to reducing the particle domains of PLA by decreasing the interfacial tension between green HDPE and PLA. With respect to mechanical properties, the results showed that modulus of elasticity and tensile strength at yield are affected by PLA content.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
