Effects of titanate treatment on morphology and mechanical properties of graphene nanoplatelets/high density polyethylene nanocomposites

2015 ◽  
Vol 132 (23) ◽  
pp. n/a-n/a ◽  
Author(s):  
Pashupati Pokharel ◽  
Hyunmin Bae ◽  
Jung-Gyu Lim ◽  
Kyoung Yong Lee ◽  
Sunwoong Choi
Keyword(s):  
Mechanical Properties ◽  
High Density Polyethylene ◽  
Graphene Nanoplatelets ◽  
High Density ◽  
Morphology And Mechanical Properties

scholarly journals Size effects of graphene nanoplatelets on the properties of high-density polyethylene nanocomposites: morphological, thermal, electrical, and mechanical characterization

2020 ◽  
Vol 11 ◽  
pp. 167-179 ◽  
Author(s):  
Tuba Evgin ◽  
Alpaslan Turgut ◽  
Georges Hamaoui ◽  
Zdenko Spitalsky ◽  
Nicolas Horny ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Percolation Threshold ◽  
Size Effects ◽  
High Density Polyethylene ◽  
Considerable Effect ◽  
Graphene Nanoplatelets ◽  
High Density ◽  
Filler Concentration ◽  
Lateral Size ◽  
Sem Images

High-density polyethylene (HDPE)-based nanocomposites incorporating three different types of graphene nanoplatelets (GnPs) were fabricated to investigate the size effects of GnPs in terms of both lateral size and thickness on the morphological, thermal, electrical, and mechanical properties. The results show that the inclusion of GnPs enhance the thermal, electrical, and mechanical properties of HDPE-based nanocomposites regardless of GnP size. Nevertheless, the most significant enhancement of the thermal and electrical conductivities and the lowest electrical percolation threshold were achieved with GnPs of a larger lateral size. This could have been attributed to the fact that the GnPs of larger lateral size exhibited a better dispersion in HDPE and formed conductive pathways easily observable in scanning electron microscope (SEM) images. Our results show that the lateral size of GnPs was a more regulating factor for the above-mentioned nanocomposite properties compared to their thickness. For a given lateral size, thinner GnPs showed significantly higher electrical conductivity and a lower percolation threshold than thicker ones. On the other hand, in terms of thermal conductivity, a remarkable amount of enhancement was observed only above a certain filler concentration. The results demonstrate that GnPs with smaller lateral size and larger thickness lead to lower enhancement of the samples’ mechanical properties due to poorer dispersion compared to the others. In addition, the size of the GnPs had no considerable effect on the melting and crystallization properties of the HDPE/GnP nanocomposites.

Process-induced morphology and mechanical properties of high-density polyethylene

Polymer ◽  
2018 ◽  
Vol 136 ◽  
pp. 179-186 ◽  
Author(s):  
Regine Boldt ◽  
Uwe Gohs ◽  
Udo Wagenknecht ◽  
Manfred Stamm
Keyword(s):  
Mechanical Properties ◽  
High Density Polyethylene ◽  
High Density ◽  
Morphology And Mechanical Properties
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