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79395

FRICTION AND WEAR OF POLYMETHYL METHACRYLATE REINFORCED BY SILICA AND ZIRCONIA NANOPARTICLES AS DENTAL MATERIALS

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Last updated: 25 Dec 2024

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Abstract

In this study, unfilled PMMA and two groups of specimen composites of polymethyl methacrylate (PMMA) were investigated. The first group was reinforced with different contents of SiO2 nanoparticles ranging from 2.5 wt. % to 15 wt. % in order to obtain the optimum composition of the mixture that maintains the excellent tribological properties over that of the unfilled PMMA. The second group was prepared by adding zirconia (ZrO2) nanoparticles of content ranging from 2.5 % to 7.5 % to the composite containing 7.5 wt. % SiO2  nanoparticles.
 
The effect of reinforcing PMMA with silica and zirconia nanoparticles on the wear and friction was investigated under dry sliding conditions, constant sliding velocity of 2 m/s and different applied normal load values, 5, 10, 15, 20 and25 N. The time of experiment was 600s. Based on the experiments carried out in the present work, it was found that wear resistance and friction coefficient of the composites were significantly influenced by SiO2 and ZrO2 nanoparticles contents. The lowest wear value in (PMMA/SiO2 nanoparticles) composite was obtained for 7.5 wt. % of silica nanoparticles, while for PMMA/SiO2 and ZrO2 nanoparticles was reported for 7.5 wt. % of silica and 5 wt. % of zirconia nanoparticles.

DOI

10.21608/jest.2018.79395

Keywords

polymethyl methacrylate, silica, Zirconia, Nanoparticles, Wear, Friction coefficient, restorative dental materials

Authors

First Name

Yousra A.

Last Name

Ahmed

MiddleName

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Affiliation

Biomedical Engineering Dept., Faculty of Engineering, Minia University.

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Orcid

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First Name

Nourelhoda M.

Last Name

Mahmoud

MiddleName

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Affiliation

Biomedical Engineering Dept., Faculty of Engineering, Minia University.

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Orcid

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First Name

M. T.

Last Name

El-Waked

MiddleName

-

Affiliation

Biomedical Engineering Dept., Faculty of Engineering, Helwan University.

Email

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City

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Orcid

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First Name

W. Y.

Last Name

Ali

MiddleName

-

Affiliation

Production Engineering and Mechanical Design Dept., Faculty of Engineering, Minia University.

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Volume

15

Article Issue

4

Related Issue

11855

Issue Date

2018-10-01

Receive Date

2018-06-28

Publish Date

2018-10-01

Page Start

14

Page End

25

Print ISSN

2090-5882

Online ISSN

2090-5955

Article File

JEST_Volume 15_Issue 4_Pages 14-25.pdf

PDF . 664.1kB

Link

https://jest.journals.ekb.eg/article_79395.html

Detail API

https://jest.journals.ekb.eg/service?article_code=79395

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Original Article

Type Code

1,211

Publication Type

Journal

Publication Title

Journal of the Egyptian Society of Tribology

Publication Link

https://jest.journals.ekb.eg/

MainTitle

FRICTION AND WEAR OF POLYMETHYL METHACRYLATE REINFORCED BY SILICA AND ZIRCONIA NANOPARTICLES AS DENTAL MATERIALS

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Article

Created At

22 Jan 2023