Abstract
In recent years, the development and use of polymeric nanocomposites in creating advanced materials has expanded exponentially. A substantial amount of research has been done in order to design polymeric nanocomposites in a safe and efficient manner. In the present study, the impact of processing parameters, such as, barrel temperature, and residence time on the mechanical and thermal properties of high density polyethylene (HDPE)-TiO2 nanocomposites were investigated. Additionally, scanning electron microscopy and X-ray diffraction spectroscopy were used to analyze the dispersion, location, and phase morphology of TiO2 on the HDPE matrix. Mechanical tests revealed that tensile strength of the fabricated HDPE-TiO2 nanocomposites ranged between 22.53 and 26.30 MPa, while the Young’s modulus showed a consistent increase as the barrel temperature increased from 150 °C to 300 °C. Moreover, the thermal stability decreased as the barrel temperature increased.
Highlights
Polymers have been used as starting materials for several different applications, and polymeric composites have formed a interesting niche in biomedical engineering
Figure is a representative micrograph showing the surface morphologies of the composites that were prepared with a consistent TiO2 content of 5 wt %, barrel morphologies of the composites that were with a consistent of 5temperatures wt %, barrel
The degradation temperature decreased with an increase in the barrel temperature and residence time, the rate of crystallization showed a consistent rise in both cases; rate of crystallization was increased up to 75%
Summary
Polymers have been used as starting materials for several different applications, and polymeric composites have formed a interesting niche in biomedical engineering. Incorporation of additives into the polymeric matrix are mostly used to enhance the existing properties, it can be considered a cost effective method for value added products [1,2]. New hybrid polymeric materials are being continually developed by the addition of fillers that fine tune the physical, chemical, and mechanical properties of the composites [1,3]. The effect of different nanofillers can be observed from the improved properties of the polymeric nanocomposites, fine tuning the process parameters of injection molding itself is another important factor that must be considered. Given the versatility of HDPE, many research groups have studied the effect of incorporation of fillers into the polymer
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