Abstract
The investigation of the graphene (GN) performance in improving mechanical properties of recycled polypropylene with crosslinkedpolyaniline (rPP-g-PANI) was prepared via ultrasound extrusion. The concentration of GN in the research was varied from 0.5 to 3 phr, while polyaniline (PANI) and dycumil peroxide(DCP) were fixed at 4 wt. % and 1 phr loading, respectively. The morphological structure of the nanocomposites was investigated using fill emission scanning electron microscopy (FESEM) and confirmed a good dispersion of PANI and GN on rPP matrix. The increasing loading of GN has promoted a slight improvement in tensile modulus and tensile strength at 1.5 and 2 phr of GN loadings, respectively. However elongation at break showed a decrease at all PANI loadings due to lack of interfacial addition between PANI/GN particles and the rPP matrix.
Highlights
Polypropylene (PP) constitutes one of the major plastics waste in the landfill, which raise environmental concern [1]
Recycled polypropylene resin was purchased from Titan Petrochemical, Malaysia.Dicumyl peroxide 99% was purchased from Acros Organics, New Jersey, USA
The GNwas distributed uniform in GN reinforced recycled PP (rPP)-PANI nanocomposites were successfully prepared by ultrasonic extrusion
Summary
Polypropylene (PP) constitutes one of the major plastics waste in the landfill, which raise environmental concern [1]. RPP alone is lack of sufficient properties, which hinder the use in some engineering applications To overcome this problem, conductive polymer was employed in the production of recycled polymer matrix. The main problem of PANI is associated with the hardness and brittleness of free standing PANI that make them difficult for processing To overcome this problem, rPPwas processed together with PANI, which exhibit balancedproperties of electrical conductivity, mechanical properties, and processing characteristics.Owing to the chemical structure, Dicumyl peroxide (DCP) serve in this mixture as acrosslinking agent and acted as compatibilizer of rPP-. Till date several researches have been carried out based on polymer composites using GN as nanofiller [6].With the resident time of the ultrasonic treatment of a few seconds, the use of high power ultrasound in extrusion process might enhance dispersion of nanosize filler in polymer matrix.
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