Microhardness of poly(methyl methacrylate)-multiwalled carbon nanotubes composites: Effect of ultraviolet irradiation

Man Fang Chang; Fuqian Yang; Sanboh Lee

doi:10.1016/j.matchemphys.2018.06.010

Microhardness of poly(methyl methacrylate)-multiwalled carbon nanotubes composites: Effect of ultraviolet irradiation

Man Fang Chang, Fuqian Yang, Sanboh Lee

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

Understanding the mechanical behavior of polymer matrix composites under the service conditions is of practical importance to improve structural durability and reliability. In this work, we study the microhardness of poly(methyl methacrylate)-multiwalled carbon nanotubes (PMMA-MWCNTs) composite as a function of the fraction of MWCNTs and the irradiation of ultraviolet (UV) light in a temperature range of 50–80 °C. Increasing temperature, heating time, and the weight fraction of MWCNTs causes the increase of the microhardness of the PMMA-MWCNT composite, while increasing the UV-irradiation dose causes the decrease of the microhardness of the PMMA-MWCNT composite. A first-order kinetic process is proposed to analyze the variation of the microhardness of the PMMA-MWCNT composite with time. The activation energy for the first-order kinetic process increases with increasing the weight fraction of MWCNTs, and decreases with increasing the UV-irradiation dose. The temperature dependence of the microhardness of the PMMA-MWCNT composite at equilibrium state follows the van't Hoff relation.

Original language	English
Pages (from-to)	223-229
Number of pages	7
Journal	Materials Chemistry and Physics
Volume	216
DOIs	https://doi.org/10.1016/j.matchemphys.2018.06.010
State	Published - Sep 1 2018

Bibliographical note

Publisher Copyright:
© 2018 Elsevier B.V.

Funding

This work was financially supported by the Ministry of Science and Technology, Taiwan . FY is grateful for the support by the NSF through the grant CMMI-1634540 , monitored by Dr. Khershed Cooper. This work was financially supported by the Ministry of Science and Technology, Taiwan. FY is grateful for the support by the NSF through the grant CMMI-1634540, monitored by Dr. Khershed Cooper.

Funders	Funder number
National Science Foundation Arctic Social Science Program	CMMI-1634540
Ministry of Science and Technology, Taiwan
National Science Foundation Arctic Social Science Program

Keywords

Microhardness
Multiwalled carbon nanotubes
Poly(methyl methacrylate)
Ultraviolet light

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics

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10.1016/j.matchemphys.2018.06.010

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title = "Microhardness of poly(methyl methacrylate)-multiwalled carbon nanotubes composites: Effect of ultraviolet irradiation",

abstract = "Understanding the mechanical behavior of polymer matrix composites under the service conditions is of practical importance to improve structural durability and reliability. In this work, we study the microhardness of poly(methyl methacrylate)-multiwalled carbon nanotubes (PMMA-MWCNTs) composite as a function of the fraction of MWCNTs and the irradiation of ultraviolet (UV) light in a temperature range of 50–80 °C. Increasing temperature, heating time, and the weight fraction of MWCNTs causes the increase of the microhardness of the PMMA-MWCNT composite, while increasing the UV-irradiation dose causes the decrease of the microhardness of the PMMA-MWCNT composite. A first-order kinetic process is proposed to analyze the variation of the microhardness of the PMMA-MWCNT composite with time. The activation energy for the first-order kinetic process increases with increasing the weight fraction of MWCNTs, and decreases with increasing the UV-irradiation dose. The temperature dependence of the microhardness of the PMMA-MWCNT composite at equilibrium state follows the van't Hoff relation.",

keywords = "Microhardness, Multiwalled carbon nanotubes, Poly(methyl methacrylate), Ultraviolet light",

author = "Chang, \{Man Fang\} and Fuqian Yang and Sanboh Lee",

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AU - Lee, Sanboh

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Y1 - 2018/9/1

N2 - Understanding the mechanical behavior of polymer matrix composites under the service conditions is of practical importance to improve structural durability and reliability. In this work, we study the microhardness of poly(methyl methacrylate)-multiwalled carbon nanotubes (PMMA-MWCNTs) composite as a function of the fraction of MWCNTs and the irradiation of ultraviolet (UV) light in a temperature range of 50–80 °C. Increasing temperature, heating time, and the weight fraction of MWCNTs causes the increase of the microhardness of the PMMA-MWCNT composite, while increasing the UV-irradiation dose causes the decrease of the microhardness of the PMMA-MWCNT composite. A first-order kinetic process is proposed to analyze the variation of the microhardness of the PMMA-MWCNT composite with time. The activation energy for the first-order kinetic process increases with increasing the weight fraction of MWCNTs, and decreases with increasing the UV-irradiation dose. The temperature dependence of the microhardness of the PMMA-MWCNT composite at equilibrium state follows the van't Hoff relation.

AB - Understanding the mechanical behavior of polymer matrix composites under the service conditions is of practical importance to improve structural durability and reliability. In this work, we study the microhardness of poly(methyl methacrylate)-multiwalled carbon nanotubes (PMMA-MWCNTs) composite as a function of the fraction of MWCNTs and the irradiation of ultraviolet (UV) light in a temperature range of 50–80 °C. Increasing temperature, heating time, and the weight fraction of MWCNTs causes the increase of the microhardness of the PMMA-MWCNT composite, while increasing the UV-irradiation dose causes the decrease of the microhardness of the PMMA-MWCNT composite. A first-order kinetic process is proposed to analyze the variation of the microhardness of the PMMA-MWCNT composite with time. The activation energy for the first-order kinetic process increases with increasing the weight fraction of MWCNTs, and decreases with increasing the UV-irradiation dose. The temperature dependence of the microhardness of the PMMA-MWCNT composite at equilibrium state follows the van't Hoff relation.

KW - Microhardness

KW - Multiwalled carbon nanotubes

KW - Poly(methyl methacrylate)

KW - Ultraviolet light

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Microhardness of poly(methyl methacrylate)-multiwalled carbon nanotubes composites: Effect of ultraviolet irradiation

Abstract

Bibliographical note

Funding

Keywords

ASJC Scopus subject areas

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