Multifunctional high density polyethylene nanocomposites produced by incorporation of exfoliated graphite nanoplatelets 1: Morphology and mechanical properties

2009 ◽  
Vol 31 (6) ◽  
pp. 1091-1098 ◽  
Author(s):  
Xian Jiang ◽  
Lawrence T. Drzal
Keyword(s):  
Mechanical Properties ◽  
High Density Polyethylene ◽  
High Density ◽  
Exfoliated Graphite ◽  
Graphite Nanoplatelets ◽  
Exfoliated Graphite Nanoplatelets ◽  
Morphology And Mechanical Properties

scholarly journals Nano indentation and morphology study of the polypropylene and high density polyethylene nanocomposites based on exfoliated graphite Nano platelets/Nano- magnesium oxide

2018 ◽  
Vol 7 (2) ◽  
pp. 891
Author(s):  
A I. Alateyah
Keyword(s):  
High Density Polyethylene ◽  
High Density ◽  
Exfoliated Graphite ◽  
Dramatic Improvement ◽  
Graphite Nanoplatelets ◽  
Molding Machine ◽  
Reduced Modulus ◽  
The Matrix ◽  
Exfoliated Graphite Nanoplatelets ◽  
Xrd Patterns

Polypropylene (PP) and high density polyethylene (HDPE) were successfully fabricated using injection molding machine, by the addition of exfoliated graphite nanoplatelets composites reinforced with 2wt.t% of nano-magnesia. The nanoindentation properties and microstructure of the composites were investigated, in the current study. The XRD patterns of both composites showed the peaks of xGnP and n-MgO, where their intensity became stronger with increasing the concentration of xGnP added into both polymers. In addition, the SEM micrographs revealed a good dispersion of fillers within the matrix. The nanoindentation properties of both nanocomposites revealed better properties with compared to the virgin polymers. The PP nanocomposites showed an improvement of hardness up to 22 % and 118% with the compositions of 1xGnP/2n-MgO and 5xGnP/2n-MgO respectively. In addition, HDPE/1xGnP/2n-MgO and HDPE/5xGnP/2n-MgO represented a dramatic improvement of hardness up to 146% and 341% respectively with compared to virgin polymer. In addition, the enhancements in reduced modulus of PP and HDPE were proportional to the xGNP loading.  

Co-milling-assisted exfoliated graphite nanoplatelets filler introduction in polyethylene and alumina composites

2018 ◽  
Vol 53 (13) ◽  
pp. 1815-1826
Author(s):  
Sheng Cai Tan ◽  
Jimmy KW Chan ◽  
Kian Ping Loh
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Composite Materials ◽  
Exfoliated Graphite ◽  
Flexural Properties ◽  
Graphite Nanoplatelets ◽  
Alumina Composites ◽  
Exfoliated Graphite Nanoplatelets ◽  
Polyethylene Composites

This paper aims to investigate the effect of co-milling-assisted exfoliation of graphite into polyethylene and alumina matrices on the mechanical properties of the composites. Tensile mechanical properties of composite materials based on polyethylene reinforced with graphite and graphite-derived fillers at 0–0.75 wt% loading were investigated, while hardness and flexural properties of alumina composites with 0.25 wt% loading of the same additives were assessed. Exfoliated graphite, applied at 0.25–0.75 wt% in pre-exfoliated form or in a co-milling-assisted fashion, has been demonstrated to be effective in enhancing the tensile strength of polyethylene composites. Similar enhancement in hardness and flexural properties was observed in alumina composites with 0.25 wt% loading of the exfoliated graphite. Co-milling-assisted exfoliated graphite nanoplatelets additive introduction has been found to effect a more desirable mechanical properties enhancement in the composites investigated in this study.

scholarly journals Mechanical properties and microstructural investigation of polypropylene/exfoliated graphite nanoplatelets/ nano-magnesium oxide composites

2018 ◽  
Vol 7 (2) ◽  
pp. 897
Author(s):  
A I. Alateyah ◽  
F H. Latief
Keyword(s):  
Mechanical Properties ◽  
Flexural Modulus ◽  
Exfoliated Graphite ◽  
Graphite Nanoplatelets ◽  
Microstructural Investigation ◽  
The Matrix ◽  
Exfoliated Graphite Nanoplatelets ◽  
Polypropylene Matrix ◽  
Xrd Patterns ◽  
Oxide Composites

Polypropylene/exfoliated graphite nanoplatelets composites reinforced with a low concentration of nano-magnesia have been successfully fabricated, using injection molding machine. The mechanical properties and microstructure of the composites were investigated, in the present study. The XRD patterns of the composites showed the peaks of xGnP and n-MgO, where the intensity of the xGnP peaks became stronger with increasing the concentration of xGnP added into polypropylene matrix. In addition, the SEM micrographs revealed a good dispersion of fillers within the matrix. The results showed that increasing the amount of exfoliated graphite nanoplatelets up to 10 wt. % resulted in increasing the composite flexural strength, flexural modulus, and hardness up to 35% and 91%, 6.7%, respectively, compared to the monolithic polypropylene.  

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