Study the Relation between Flow, Thermal and Mechanical Properties of Waste Polypropylene Filled Silica Nanoparticles

Abstract:

This paper investigates the flow, thermal and mechanical properties of waste polypropylene (WPP) reinforced with silica (SiO₂) nanoparticles (NPs). Recently the researches prove that the addition of NPs to the thermoplastic polymer produces significant change in its properties. SiO₂ NPs of 0.001, 0.003, 0.006, 0.009, 0.012 and 0.015wt% were mixed with the WPP using twin screw extruder. The mixing process performed at 10 rpm and 190°C. The topography and particle size distribution of 0.001, 0.006 and 0.015 of SiO₂ NPs concentrations samples are analyzed using atomic force microscopy (AFM). The crystallinity of nanocomposite was examined by X-ray diffraction. The melt flow rate (MFR) and melt volume rate (MVR) are tested due to SiO₂ NPs concentration at standard condition using melt flow index (MFI) device. The shear viscosity and melt density are calculated using MFR and MVR values. Differential Scanning Calomitry (DSC) is used to show the effect of SiO₂ NPs concentration on the thermal history of nanocomposite. Charpy impact strength and hardness are tested. The results show that the MFR and MVR increase with the NPs concentration increasing. The shear viscosity decreases with MFR and MVR increasing. The crystallinity level and the crystallinity temperature decreases with SiO₂ NPs concentration increasing while impact and hardness increasing. Clear difference between solid and melt density is observed. There is a compatible between the thermal, flow and mechanical properties of different SiO₂ nanocomposite samples.

• Periodical: Key Engineering Materials (Volume 724)
• Pages: 28-38
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.724.28
• Online since: December 2016
• Authors: Nizar Jawad Hadi*, Dhey Jawad Mohamed
• Keywords: Flow Behavior, Mechanical Properties, MFR, MVR, SiO₂ NPs, Thermal Behavior, Topography Properties, Twin Screw Extruder, Waste PP

References

[1] Diego Bracho, Vivianne N. Dougnac, Humberto Palza, and Ra´ ul Quijada Functionalization of Silica Nanoparticles for Polypropylene Nanocomposite Applications, Hindawi Publishing Corporation, Journal of Nanomaterials , Volume 2012, Article ID, 263915, (2012).

DOI: 10.1155/2012/263915

[2] Dabrowska, L. Fambri, A. Pegoretti, M. Slouf , T. Vackova , and J. Kolarik Spinning, drawing and physical properties of polypropylene nanocomposite fibers with fumed nanosilica, eXPRESS Polymer Letters Volume 9, No. 3 (2015) 277–290, (2014).

DOI: 10.3144/expresspolymlett.2015.25

[3] A. Mirzaeinia and A. Haghtalab Investigation of rheology and morphology of Polypropylene/Polyethylene terephthalate/ SiO2 nanocomposites, Proceedings of the 4th International Conference on Nanostructures (ICNS4), Iran, (2012).

[4] Hani E. , Anjan Mukhopadhyay, Jin Wang, Chul B. Park and Norbert Reichelt Effect of Recycling on the Rheological Properties and Foming Behaviors of Branched Polypropylene Blowing Agents and Foaming Processes, Germany, (2002).

[5] Sylvie Pimbert, Ahmed Elloumi, and Alain Bourmaud Nanofillers improve the mechanical properties of recycled polypropylene, Society of Plastics Engineers (SPE), (2010).

[6] Andrea Dorigato, Alessandro Pegoretti Reprocessing Effects on Polypropylene/Silica Nanocomposites, journal of applied polymer science, Volume 131, (2013).

DOI: 10.1002/app.40242

[7] Moisés Gómez, Diego Bracho, Humberto Palza and Raúl Quijada Effect of morphology on the permeability, mechanical and thermal properties of polypropylene/SiO2 nanocomposites, Polymer International, (2015).

DOI: 10.1002/pi.4909

[8] Thomas E. Twardowski" Introduction to Nanocomposite Materials: Properties, Processing, characterization "copyright by DES tech publications Inc. USA, (2007).

[9] M. Garca, G. van Vliet, S. Jain, B. A. G. Schrauwen, A. Sarkissov, W.E. van Zyl and B. Boukamp Polypropylene/SiO2 Nanocomposite with Improve Mechanical Properties, Reviews on advanced materials science, Volume 6, page 169-175, (2004).

[10] Zulkifli Mohamad Ariff, Azlan Ariffin, Suzi Salwah Jikan and Nor Azura Abdul Rahim" Rheological Behaviour of Polypropylene‏ Through Extrusion and Capillary Rheometry" INTECH journals, Malysia, (2012).

[11] Nizar Jawad Hadi, Najim A. Saad and Dhay Jawad Mohamed Study the Effect of CaCO3 Nanoparticles on the Mechanical Properties of Virgin and Waste Polypropylene, Advance Material Research, Volume 6, Pages 23-33, (2014).

DOI: 10.4028/www.scientific.net/amr.1016.23

[12] Yongri Liang, *a   Shipeng Wen, c   Yanyan Renc and   Li Liu Fabrication of nanoprotrusion surface structured silica nanofibers for the improvement of the toughening of polypropylene, An international journal to further the chemical sciences, issue 40, (2015).

DOI: 10.1039/c5ra01510c

[13] M. Garc, G. van Vliet, S. Jain, B. A. G. Schrauwen A. Sarkissov W.E. van Zy and B. Boukamp Polypropylene/SiO2‏ nanocomposite with improved mechanical properties, Rev. Adv. Mater. Sci., 6, PP. 169-175, (2004).

[14] Wei-Zhi Wang, Tianxi Liu" Mechanical Properties and Morphologies of Polypropylene Composites Synergistically Filled by Styrene-Butadiene Rubber and Silica Nanoparticles" Journal of Applied Polymer Science, (2008).

DOI: 10.1002/app.28021

[15] A Pustak, M Leskovac, M Denac, I Svab, J Pohleven, M Makarovic, V Musil and I Smit Interfacial and mechanical properties of polypropylene/silica nano- and microcomposites, ournal of Reinforced Plastics and Composite, (2014).

DOI: 10.1177/0731684413518827