Preparation and characterization of hybrid filler reinforced UHMWPE composites for artificial joint replacement

This is a study of ultra-high molecular weight polyethylene (UHMWPE) reinforced with zinc oxide (ZnO) under various filler loadings (3, 7, 12, 18 and 25 wt.%) and hybridized with incorporation of chitosan (CS). Further development of the UHMWPE composite was via 3-APTES treatment of the ZnO particul...

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Format:	Thesis
Language:	English
Subjects:	Artificial joints Ultrahigh molecular weight polyethylene Polyethylene Fillers (Materials) Polymeric composites
Online Access:	http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/77183/1/Page%201-24.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/77183/2/Full%20text.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/77183/4/Mohamad%20Hazwan.pdf
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spelling	my-unimap-771832022-11-24T08:23:21Z Preparation and characterization of hybrid filler reinforced UHMWPE composites for artificial joint replacement Nik Noriman, Zulkepli, Dr. This is a study of ultra-high molecular weight polyethylene (UHMWPE) reinforced with zinc oxide (ZnO) under various filler loadings (3, 7, 12, 18 and 25 wt.%) and hybridized with incorporation of chitosan (CS). Further development of the UHMWPE composite was via 3-APTES treatment of the ZnO particulates with silane as a coupling agent. All composite specimens were mixed via dry ball milling and prepared using hot compression molding. Additions of ZnO towards UHMWPE resulted in an increase of 28.99% in the ultimate tensile strength compared to unfilled UHMWPE with the optimum percentage (12 wt%) of ZnO. The addition of 12 wt.% ZnO also has significantly increase the wear resistance of tested composites, in accordance with the minimal weight loss. The flexural strength and modulus had a notably high improvement through ZnO addition up to 25 wt% as compared to pure UHMWPE. However, the incorporation of CS (1, 2, 3 wt%) in the optimum percentage (12 wt%) of UHMWPE/ZnO composites has slightly changed the properties of the hybrid composites where the addition of CS had resulted in lower flexural strength and wear resistance than that of 12 wt% ZnO UHMWPE composite but still higher than that of pure UHMWPE. The addition of ZnO to the UHMWPE matrix had lowered the melting temperature (Tm) of the composite but delaying the degradation temperature of the composite. Further investigation of dual filler incorporation was done by addition of CS to the UHMWPE/ZnO composite and resulted in reduction of the degree of crystallization, Xc, of UHMWPE. Chemical resistance was improved with higher ZnO content with a slight reduction of mass change after incorporation of CS. The hardness value increased with ZnO addition but higher incorporation of CS had lowered the hardness value. Effect of treatment on ZnO towards the properties of UHMWPE composite and hybrid resulted in a significant improvement compared to UHMWPE filled untreated ZnO on all properties on both UHMWPE composite and hybrid composites. The highest magnitude of change was seen in the tensile strength and wear resistance was at 12 wt.% of treated ZnO (tZnO) content. However, the flexural properties achieved highest point with incorporation of 2 wt.% CS towards UHMWPE/tZnO. Thermal stability was also achieved with more tZnO addition where the thermal degradation of UHMWPE was hindered around 7% for the T10% value. Ultimately, it was experimentally proven that the UHMWPE hybrid composite with CS—tZnO as fillers had best out in the terms of biocompatibility via Alamar Blue (AB) assay. Universiti Malaysia Perlis (UniMAP) Thesis en http://dspace.unimap.edu.my:80/xmlui/handle/123456789/77183 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/77183/3/license.txt 8a4605be74aa9ea9d79846c1fba20a33 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/77183/1/Page%201-24.pdf 25466ae940f67d2669fe2bce3751ff15 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/77183/2/Full%20text.pdf 8dbd06cc61e90e25007ad7b5dae7aa0e http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/77183/4/Mohamad%20Hazwan.pdf f8173148c947d83f3f0e21de6e9b1737 Universiti Malaysia Perlis (UniMAP) Artificial joints Ultrahigh molecular weight polyethylene Polyethylene Fillers (Materials) Polymeric composites School of Materials Engineering
institution	Universiti Malaysia Perlis
collection	UniMAP Institutional Repository
language	English
advisor	Nik Noriman, Zulkepli, Dr.
topic	Artificial joints Ultrahigh molecular weight polyethylene Polyethylene Fillers (Materials) Polymeric composites
spellingShingle	Artificial joints Ultrahigh molecular weight polyethylene Polyethylene Fillers (Materials) Polymeric composites Preparation and characterization of hybrid filler reinforced UHMWPE composites for artificial joint replacement
description	This is a study of ultra-high molecular weight polyethylene (UHMWPE) reinforced with zinc oxide (ZnO) under various filler loadings (3, 7, 12, 18 and 25 wt.%) and hybridized with incorporation of chitosan (CS). Further development of the UHMWPE composite was via 3-APTES treatment of the ZnO particulates with silane as a coupling agent. All composite specimens were mixed via dry ball milling and prepared using hot compression molding. Additions of ZnO towards UHMWPE resulted in an increase of 28.99% in the ultimate tensile strength compared to unfilled UHMWPE with the optimum percentage (12 wt%) of ZnO. The addition of 12 wt.% ZnO also has significantly increase the wear resistance of tested composites, in accordance with the minimal weight loss. The flexural strength and modulus had a notably high improvement through ZnO addition up to 25 wt% as compared to pure UHMWPE. However, the incorporation of CS (1, 2, 3 wt%) in the optimum percentage (12 wt%) of UHMWPE/ZnO composites has slightly changed the properties of the hybrid composites where the addition of CS had resulted in lower flexural strength and wear resistance than that of 12 wt% ZnO UHMWPE composite but still higher than that of pure UHMWPE. The addition of ZnO to the UHMWPE matrix had lowered the melting temperature (Tm) of the composite but delaying the degradation temperature of the composite. Further investigation of dual filler incorporation was done by addition of CS to the UHMWPE/ZnO composite and resulted in reduction of the degree of crystallization, Xc, of UHMWPE. Chemical resistance was improved with higher ZnO content with a slight reduction of mass change after incorporation of CS. The hardness value increased with ZnO addition but higher incorporation of CS had lowered the hardness value. Effect of treatment on ZnO towards the properties of UHMWPE composite and hybrid resulted in a significant improvement compared to UHMWPE filled untreated ZnO on all properties on both UHMWPE composite and hybrid composites. The highest magnitude of change was seen in the tensile strength and wear resistance was at 12 wt.% of treated ZnO (tZnO) content. However, the flexural properties achieved highest point with incorporation of 2 wt.% CS towards UHMWPE/tZnO. Thermal stability was also achieved with more tZnO addition where the thermal degradation of UHMWPE was hindered around 7% for the T10% value. Ultimately, it was experimentally proven that the UHMWPE hybrid composite with CS—tZnO as fillers had best out in the terms of biocompatibility via Alamar Blue (AB) assay.
format	Thesis
title	Preparation and characterization of hybrid filler reinforced UHMWPE composites for artificial joint replacement
title_short	Preparation and characterization of hybrid filler reinforced UHMWPE composites for artificial joint replacement
title_full	Preparation and characterization of hybrid filler reinforced UHMWPE composites for artificial joint replacement
title_fullStr	Preparation and characterization of hybrid filler reinforced UHMWPE composites for artificial joint replacement
title_full_unstemmed	Preparation and characterization of hybrid filler reinforced UHMWPE composites for artificial joint replacement
title_sort	preparation and characterization of hybrid filler reinforced uhmwpe composites for artificial joint replacement
granting_institution	Universiti Malaysia Perlis (UniMAP)
granting_department	School of Materials Engineering
url	http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/77183/1/Page%201-24.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/77183/2/Full%20text.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/77183/4/Mohamad%20Hazwan.pdf
_version_	1776104247356555264

Preparation and characterization of hybrid filler reinforced UHMWPE composites for artificial joint replacement

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