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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Main Authors: Surojit Gupta, M. F. Riyad, Yun Ji
Format: Article
Language:English
Published: MDPI AG 2016-08-01
Series:Lubricants
Subjects:
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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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
work_keys_str_mv AT surojitgupta synthesisandtribologicalbehaviorofultrahighmolecularweightpolyethyleneuhmwpelignincomposites
AT mfriyad synthesisandtribologicalbehaviorofultrahighmolecularweightpolyethyleneuhmwpelignincomposites
AT yunji synthesisandtribologicalbehaviorofultrahighmolecularweightpolyethyleneuhmwpelignincomposites