Abstract
Polymer composites of virgin high density poly ethylene (HDPE) and virgin polypropylene (PP) are prepared. PP of weight% of 20, 30 and 50 are reinforced to HDPE in the form of pellets. They are converted into raw polymer sheets using a two roll milling machine. The prepared raw sheets have undergone compression moulding to fabricate polymer sheets to study electrical properties like dielectric strength, surface resistivity and volume resistivity at atmospheric temperature and pressure. Result shows dielectric strength and volume resistivity decreases with addition of PP to HDPE, whereas surface resistivity increases. Crystal growth rate is observed using a cross polarised microscope (PLM). The microscopy results reveal, the PP crystallizes faster than HDPE and the growth rate declines for the polyblend; showing non-uniform and hazy spherulitic structure.
Highlights
During last decades polymeric containing materials attracted the attention of scientists for wide spread applications such as solar energy conversion, coatings, adhesives, lithography, light emitting diodes, sensors, laser development and many applications [1] [2]
Result shows dielectric strength and volume resistivity decreases with addition of PP to high density poly ethylene (HDPE), whereas surface resistivity increases
It is noteworthy to mention that the reinforcement of PP to HDPE matrix results in decrease of volume resistivity
Summary
During last decades polymeric containing materials attracted the attention of scientists for wide spread applications such as solar energy conversion, coatings, adhesives, lithography, light emitting diodes, sensors, laser development and many applications [1] [2]. In general polymer blends are prepared by physical mixing of two or more polymers to obtain a new material with improved properties compared to the parent one. This is the most convenient method of obtaining a material rather than synthesizing a new polymer [11] [12]. Polymers with controlled conductivity and thermal sensitivity are much desirable in various applications [13] [14] [15]. Knowledge of electrical properties of polymer blends is helpful in material study and characterization for device fabrication
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