Effect of functionalization of multi-walled carbon nanotube on mechanical and viscoelastic properties of polysulfide-modified epoxy nanocomposites

Wu, Yeping; Gu, Zhongyun; Mao-bin, Chen; Zhu, Chunhua; Liao, Hong

doi:10.1177/0954008316632290

Cited by 13 publications

(16 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For acid-treated MWCNT, the intensity of 3440 cm À1 increased to a higher level, which suggested the existence of -OH group on treated MWCNT. 15 These peaks of treated MWCNTs were found to be significantly enhanced compared to the peaks of untreated MWCNTs. The results showed that the carboxyl and hydroxyl groups were successfully grafted on the surface of the CNTs after acid treatment.…”

Section: Characterizationmentioning

confidence: 94%

Thermal and mechanical properties of cyanate ester resin modified with acid-treated multiwalled carbon nanotubes

Liu

et al. 2016

High Performance Polymers

View full text Add to dashboard Cite

Multiwalled carbon nanotubes (MWCNTs) that were treated with mixed acids were used to reinforce the cyanate ester resin. Meanwhile, the relationship among structure, morphology, and property of the modified resin was investigated. The treated MWCNTs were characterized by Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis, and X-ray photoelectron spectroscopy (XPS). The XPS results showed that the oxygen content in the treated MWCNTs was higher than that of untreated MWCNTs and the FTIR results indicated the presence of oxygen-containing functional groups on the treated MWCNTs. The microstructure of the resin was characterized by scanning electron microscopy and transmission electron microscopy. The results showed that the dispersion properties of the treated MWCNTs in the resin matrix were improved and compared with the untreated analogue. Addition of MWCNTs to the resin had little effect on the thermodynamic properties of the resin system. Upon addition of 0.8 wt% of MWCNTs to the resin, the glass transition temperature of the cured resin changed from 298°C to 285°C, maintaining a relatively high value. For the resins containing 0.6 wt% of treated MWCNTs, the plane strain critical stress intensity factor and plane strain critical strain energy release rate in the system were determined to be 1.39 Pa·m0.5 and 364 J m−2, respectively, and the fracture toughness is increased by 45.7 and 76.0%, respectively. Furthermore, the modified resin system exhibits excellent toughness and thermal properties. Therefore, the modified resin may be suitable for future applications involving high performance composites and adhesives.

show abstract

Section: Characterizationmentioning

confidence: 94%

Thermal and mechanical properties of cyanate ester resin modified with acid-treated multiwalled carbon nanotubes

Liu

et al. 2016

High Performance Polymers

View full text Add to dashboard Cite

show abstract

“…Multi‐walled carbon nanotubes (MWCNT) have great potential as rubber fillers owing to the extreme large aspect ratio and the unique properties produced by the rigid chemical structure composed of carbon networks. [ 7–9 ] MWCNT is interspersed between two‐phase of the blended rubber due to the great large aspect ratio to force two‐phase to “stitch.” And the addition of MWCNT to composites can increase the interaction between the two‐phase boundaries, reduce the interfacial tension in the contact region of the incompatible blending components，and increase the compatibility of the two‐phase. [ 10,11 ] However, entanglement and agglomeration are the key issues for the dispersion of MWCNT in the polymer matrixes, which make the improvement of the composites performance far from the expected effect.…”

Section: Introductionmentioning

confidence: 99%

The effect of tannic acid functional multi‐walled carbon nanotubes on the properties of nitrile rubber/ethylene propylene diene monomer composites

Song

Wang

2022

Polymer Composites

View full text Add to dashboard Cite

Multi‐walled carbon nanotubes (MWCNT) were first non‐covalently functioned by tannic acid (TA), then blended with nitrile rubber (NBR) and ethylene propylene diene monomer (EPDM) with NBR:EPDM:TA‐MWCNT = 70:30:5. TA‐MWCNT and the composites had been characterized by various techniques, including Fourier transform infrared spectroscopy (FT‐IR), Raman analysis, transmission electron microscopy (TEM), mechanical properties testing, thermal‐oxidative aging testing, differential scanning calorimetry (DSC), dynamic mechanical analysis (DMA), and scanning electron microscopy (SEM). Results indicated that TA molecules were successfully absorbed to the surface of MWCNT. And compared with NBR/EPDM/MWCNT composites, the compatibility between NBR and EPDM had been significantly improved. The NBR/EPDM/TA‐MWCNT exhibited excellent mechanical properties and thermal‐oxidative aging properties due to the phenolic hydroxyl groups on the surface of TA‐MWCNT, which had high chemical reactivity and physical adhesion. These phenolic hydroxyl groups gave TA‐MWCNT better dispersion in the rubber matrixes and can participate in the vulcanization process, creating the firm interface between the rubber matrixes and the surface of MWCNT.

show abstract

“…TO is a sort of flexible low-molecular-weight chain with thiol groups at both ends. The thiol groups of TO can react mildly with epoxide groups of epoxy matrix and enters the epoxy resin structure after curing, giving the cross-linked network structure good flexibility, high shear strength and peel strength (Ratna and Banthia, 2004;Wu et al, 2017;Gunwant et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Thiokol oligomer functionalized MWCNTs for epoxy nanocomposites

Wang

2020

PRT

View full text Add to dashboard Cite

Purpose This paper aims to feature preparation and characterization of thiokol oligomer functionalized MWCNTs/epoxy nanocomposites using low molecular weight polyamide as curing agent. Design/methodology/approach First, thiokol oligomer functionalized MWCNTs (MWCNTs-TO) were prepared through hydroxylation, silanization and graft modification of MWCNTs. The nanocomposite specimens were fabricated through sonication and cast moulding process. The authors then investigated the impact of MWCNTs-TO content on mechanical and thermal properties of the nanocomposites. Findings MWCNTs-TO with grafting ratio of 17.5 Wt.% was synthesized and characterized with X-ray photoelectron spectroscopy, thermal gravimetric analysis, Fourier transform infrared and scanning electron microscopy. The obtained epoxy nanocomposites exhibit improved mechanical properties and thermal stability with MWCNTs-TO added. Moreover, desirable results were obtained at 0.75 Wt.% of MWCNTs-TO loading: the young’s modulus, tensile, flexural and impact strength increased by 24.6,72.8,34.8 and 82.7%, respectively, compared to the neat epoxy. The improvement of mechanical properties is mainly attributed to enhanced interfacial interaction and dispersion between the covalent functionalized MWCNTs and epoxy matrix. Research limitations/implications A flexible thiokol oligomer was successfully grafted onto MWCNTs via a mild route. Nanocomposites with excellent interfacial interaction and dispersion between MWCNTs-TO and the epoxy matrix have been successfully fabricated and investigated. Practical implications This method provided a mild and practical approach to improve the performance of MWCNTs epoxy nanocomposites. Originality/value A flexible thiokol oligomer was successfully covalent grafted onto MWCNTs via a mild route. Nanocomposites with excellent interfacial interaction and dispersion between MWCNTs-TO and the epoxy matrix have been successfully fabricated and investigated.

show abstract

Effect of functionalization of multi-walled carbon nanotube on mechanical and viscoelastic properties of polysulfide-modified epoxy nanocomposites

Cited by 13 publications

References 45 publications

Thermal and mechanical properties of cyanate ester resin modified with acid-treated multiwalled carbon nanotubes

Thermal and mechanical properties of cyanate ester resin modified with acid-treated multiwalled carbon nanotubes

The effect of tannic acid functional multi‐walled carbon nanotubes on the properties of nitrile rubber/ethylene propylene diene monomer composites

Thiokol oligomer functionalized MWCNTs for epoxy nanocomposites

Contact Info

Product

Resources

About