<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>This work studied the surface, interface state and physicochemical properties of HNO3-treated and KOH-treated carbon fiber. Poly(methyl methacrylate) (PMMA) composites were prepared by the autoclave molding process using surface-treated carbon fiber as reinforcements. The physical and chemical states of the carbon fiber surfaces and the micro-interface properties and interlaminar shear properties of the composites were studied. The results show that the surface of the HNO3-treated carbon fiber has more groove structure and higher surface roughness and thus forms a better physical bond with the resin matrix. Although the oxygen-containing functional groups of the two carbon fibers are equivalent, the surface oxygen of the HNO3-treated carbon fiber is relatively high, which is beneficial to form a better chemical bond with the matrix resin, and the interfacial shear strength is about 14% higher than that of the KOH-treated carbon fiber composite.</p>
</abstract>

This work studied the surface, interface state and physicochemical properties of HNO3-treated and KOH-treated carbon fiber. Poly(methyl methacrylate) (PMMA) composites were prepared by the autoclave molding process using surface-treated carbon fiber as reinforcements. The physical and chemical states of the carbon fiber surfaces and the micro-interface properties and interlaminar shear properties of the composites were studied. The results show that the surface of the HNO3-treated carbon fiber has more groove structure and higher surface roughness and thus forms a better physical bond with the resin matrix. Although the oxygen-containing functional groups of the two carbon fibers are equivalent, the surface oxygen of the HNO3-treated carbon fiber is relatively high, which is beneficial to form a better chemical bond with the matrix resin, and the interfacial shear strength is about 14% higher than that of the KOH-treated carbon fiber composite.

Effect of carbon fiber surface treatment with HNO3 and KOH on the interfacial bonding of PMMA resin composite

Materials Science-Poland

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

This work studied the surface, interface state and physicochemical properties of HNO3-treated and KOH-treated carbon fiber. Poly(methyl methacrylate) (PMMA)...

Sample	Cls		Ols		Nls		Si2p		O/C
Sample	Binding Energy /eV	Atom Fraction /%	Binding Energy /eV	Atom Fraction /%	Binding Energy /eV	Atom Fraction /%	Binding Energy /eV	Atom Fraction /%	O/C
HNO3	285.0	74.96	532.4	20.34	400.1	1.76	102.6	3.14	0.26
KOH	285.0	77.24	532.8	17.67	400.4	1.83	102.4	3.29	0.22

Sample	C-C or C-H (Peak1)		C-OH or C-OR (Peak2)		C-O (Peak3)		COOH (Peak4)		Activated Carbon /%
Sample	Binding Energy /eV	Atom Fraction /%	Binding Energy /eV	Atom Fraction /%	Binding Energy /eV	Atom Fraction /%	Binding Energy /eV	Atom Fraction /%	Activated Carbon /%
HNO3	285.0	61.61	286.3	21.67	287.2	12.13	288.7	4.18	39.54
KOH	285.0	59.58	286.3	24.28	287.2	16.46			40.32

Sample	Contact angle/			γ/(mJ·m^-2)	γ/(mJ·m^-2)	γ/(mJ·m^-2)
Sample	Deionized water	Ethylene glycol	Diiodomethane
HNO3	57.3±1.2	42.7±0.9	28.1±1.1	29.5±0.7	16.9±0.8	44.6±1.4
KOH	55.4±1.1	43.9±0.8	27.3±1.0	28.4±0.6	17.6±0.5	46.3±1.6
As received	56.2±1.3	43.2±0.7	27.6±1.2	28.9±0.8	17.1±0.7	45.7±1.5

Effect of carbon fiber surface treatment with HNO3 and KOH on the interfacial bonding of PMMA resin composite

Pubblicato online: 06 ott 2023

Pagine: 301 - 310

Ricevuto: 21 apr 2023

Accettato: 01 set 2023

DOI: https://doi.org/10.2478/msp-2023-0022

Parole chiave
Carbon fiber, PMMA, Surface treatment, Interfacial shear strength, chemical bond

© 2023 Li Jian, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Fig. 1.

Fig. 2.

Fig. 3.

Fig. 4.

Surface compositions of carbon fibers

XPS Cls curve fitting results of carbon fibers

Carbon fibers surface energies and contact angles in different liquids

Effect of carbon fiber surface treatment with HNO3 and KOH on the interfacial bonding of PMMA resin composite

Pubblicato online: 06 ott 2023

Pagine: 301 - 310

Ricevuto: 21 apr 2023

Accettato: 01 set 2023

DOI: https://doi.org/10.2478/msp-2023-0022

Parole chiaveCarbon fiber, PMMA, Surface treatment, Interfacial shear strength, chemical bond

© 2023 Li Jian, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Fig. 1.

Fig. 2.

Fig. 3.

Fig. 4.

Surface compositions of carbon fibers

XPS Cls curve fitting results of carbon fibers

Carbon fibers surface energies and contact angles in different liquids

Parole chiave
Carbon fiber, PMMA, Surface treatment, Interfacial shear strength, chemical bond