Synthesis and Tribological Behavior of Ultra High Molecular Weight Polyethylene (UHMWPE)-Lignin Composites
In this paper, we report the synthesis and characterization of ultra-high molecular weight polyethylene (UHMWPE)-lignin composites. During this study four different compositions, namely UHMWPE, UHMWPE-13 wt. % lignin, UHMWPE-25 wt. % lignin and UHMWPE-42.5 wt. % lignin were fabricated by hot pressin...
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MDPI AG
2016-08-01
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Online Access: | http://www.mdpi.com/2075-4442/4/3/31 |
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author | Surojit Gupta M. F. Riyad Yun Ji |
author_facet | Surojit Gupta M. F. Riyad Yun Ji |
author_sort | Surojit Gupta |
collection | DOAJ |
description | In this paper, we report the synthesis and characterization of ultra-high molecular weight polyethylene (UHMWPE)-lignin composites. During this study four different compositions, namely UHMWPE, UHMWPE-13 wt. % lignin, UHMWPE-25 wt. % lignin and UHMWPE-42.5 wt. % lignin were fabricated by hot pressing. Detailed microstructural studies by scanning electron microscopy (SEM) showed that UHMWPE and UHMWPE-13 wt. % lignin had a uniform microstructure, whereas UHMWPE-25 wt. % lignin and UHMWPE-42.5 wt. % lignin samples were riddled with pores. UHMWPE and UHMWPE-13% lignin showed comparable flexural strengths of ~32.2 MPa and ~32.4 MPa, respectively. However, the flexural strength dropped drastically in UHMWPE-25 wt. % lignin and UHMWPE-42.5 wt. % samples to ~13 MPa and ~8 MPa, respectively. The tribology of UHMWPE-lignin composites is governed by the tribofilm formation. All the compositions showed similar µmean values and the specific wear rates (WR) decreased gradually as the concentration of lignin in UHMWPE was increased. |
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issn | 2075-4442 |
language | English |
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spelling | doaj.art-45461d7c27184fc1ac585d1e0315c1e72022-12-22T02:12:10ZengMDPI AGLubricants2075-44422016-08-01433110.3390/lubricants4030031lubricants4030031Synthesis and Tribological Behavior of Ultra High Molecular Weight Polyethylene (UHMWPE)-Lignin CompositesSurojit Gupta0M. F. Riyad1Yun Ji2Department of Mechanical Engineering, University of North Dakota, Grand Forks, ND 58201, USADepartment of Mechanical Engineering, University of North Dakota, Grand Forks, ND 58201, USADepartment of Chemical Engineering, University of North Dakota, Grand Forks, ND 58201, USAIn this paper, we report the synthesis and characterization of ultra-high molecular weight polyethylene (UHMWPE)-lignin composites. During this study four different compositions, namely UHMWPE, UHMWPE-13 wt. % lignin, UHMWPE-25 wt. % lignin and UHMWPE-42.5 wt. % lignin were fabricated by hot pressing. Detailed microstructural studies by scanning electron microscopy (SEM) showed that UHMWPE and UHMWPE-13 wt. % lignin had a uniform microstructure, whereas UHMWPE-25 wt. % lignin and UHMWPE-42.5 wt. % lignin samples were riddled with pores. UHMWPE and UHMWPE-13% lignin showed comparable flexural strengths of ~32.2 MPa and ~32.4 MPa, respectively. However, the flexural strength dropped drastically in UHMWPE-25 wt. % lignin and UHMWPE-42.5 wt. % samples to ~13 MPa and ~8 MPa, respectively. The tribology of UHMWPE-lignin composites is governed by the tribofilm formation. All the compositions showed similar µmean values and the specific wear rates (WR) decreased gradually as the concentration of lignin in UHMWPE was increased.http://www.mdpi.com/2075-4442/4/3/31ligninUHMWPEmechanical behaviortribologyparticulate additives |
spellingShingle | Surojit Gupta M. F. Riyad Yun Ji Synthesis and Tribological Behavior of Ultra High Molecular Weight Polyethylene (UHMWPE)-Lignin Composites Lubricants lignin UHMWPE mechanical behavior tribology particulate additives |
title | Synthesis and Tribological Behavior of Ultra High Molecular Weight Polyethylene (UHMWPE)-Lignin Composites |
title_full | Synthesis and Tribological Behavior of Ultra High Molecular Weight Polyethylene (UHMWPE)-Lignin Composites |
title_fullStr | Synthesis and Tribological Behavior of Ultra High Molecular Weight Polyethylene (UHMWPE)-Lignin Composites |
title_full_unstemmed | Synthesis and Tribological Behavior of Ultra High Molecular Weight Polyethylene (UHMWPE)-Lignin Composites |
title_short | Synthesis and Tribological Behavior of Ultra High Molecular Weight Polyethylene (UHMWPE)-Lignin Composites |
title_sort | synthesis and tribological behavior of ultra high molecular weight polyethylene uhmwpe lignin composites |
topic | lignin UHMWPE mechanical behavior tribology particulate additives |
url | http://www.mdpi.com/2075-4442/4/3/31 |
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