Optimization of Triton X-100 removal and ultrasound probe parameters in the preparation of multiwalled carbon nanotube buckypaper

Corredor, Jefersson Alexander Rojas; Ardila-Rodríguez, L.A.; Diniz, Milton Faria; Gonçalves, Maraísa; Ribeiro, Bruno; Rezende, Mirabel Cerqueira

doi:10.1016/j.matdes.2019.107612

Cited by 55 publications

(34 citation statements)

References 69 publications

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“…As shown in Figure 3g, the Raman spectrum of two initially considered types of MWCNTs matches with the Raman spectrum of MWCNT mentioned in recent studies [54,56,57]. The absence of RBM mode and presence of D, G, and G' bands at the respective Raman shift of CNTs confirms the presence of MWCNTs.…”

Section: Surface Morphology Of Swcntssupporting

confidence: 84%

“…Due to the superior wall strength of MWCNTs, as compared to SWCNTs, there have minimal likelihood of radial vibrations for carbon atoms in MWCNTs, resulting in the absence of RBM mode [58]. The I D /I G ratio of MWCNT,a and MWCNT,b was calculated to be~1.54 and~1.63, respectively, better than mentioned in recent work for pristine MWCNT [56], signifying the good quality of both types of MWCNTs, considered in this study.…”

Section: Surface Morphology Of Swcntsmentioning

confidence: 46%

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A New Route to Enhance the Packing Density of Buckypaper for Superior Piezoresistive Sensor Characteristics

Danish

Luo

2020

Sensors

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Transforming individual carbon nanotubes (CNTs) into bulk form is necessary for the utilization of the extraordinary properties of CNTs in sensor applications. Individual CNTs are randomly arranged when transformed into the bulk structure in the form of buckypaper. The random arrangement has many pores among individual CNTs, which can be treated as gaps or defects contributing to the degradation of CNT properties in the bulk form. A novel technique of filling these gaps is successfully developed in this study and termed as a gap-filling technique (GFT). The GFT is implemented on SWCNT-based buckypaper in which the pores are filled through small-size MWCNTs, resulting in a ~45.9% improvement in packing density. The GFT is validated through the analysis of packing density along with characterization and surface morphological study of buckypaper using Raman spectrum, particle size analysis, scanning electron microscopy, atomic force microscopy and optical microscopy. The sensor characteristics parameters of buckypaper are investigated using a dynamic mechanical analyzer attached with a digital multimeter. The percentage improvement in the electrical conductivity, tensile gauge factor, tensile strength and failure strain of a GFT-implemented buckypaper sensor are calculated as 4.11 ± 0.61, 44.81 ± 1.72, 49.82 ± 8.21 and 113.36 ± 28.74, respectively.

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Section: Surface Morphology Of Swcntssupporting

confidence: 84%

Section: Surface Morphology Of Swcntsmentioning

confidence: 46%

A New Route to Enhance the Packing Density of Buckypaper for Superior Piezoresistive Sensor Characteristics

Danish

Luo

2020

Sensors

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“…The outside and inside diameters of MWCNT were around of 5–20 nm and 2–6 nm, respectively, and their lengths were up to 10–20 μm. The as‐received MWCNTs were acid treated in order to improve the compatibility to epoxy resin as described in our previous work . Triton X‐100® surfactant (Labsynth) was employed as a nonionic surfactant in BP fabrication progress.…”

Section: Methodsmentioning

confidence: 99%

Multifunctional Characteristics of Glass Fiber‐Reinforced Epoxy Polymer Composites with Multiwalled Carbon Nanotube Buckypaper Interlayer

Ribeiro

Corredor

Costa

et al. 2020

Polymer Engineering & Sci

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In this work, multiwalled carbon nanotube buckypaper (MWCNT‐BP) was inserted at the middle‐plane of glass fiber/epoxy resin prepregs to obtain three‐phase nanostructured composite. Preliminary tests conducted by differential scanning calorimetry and thermogravimetric analyses (TGA) revealed that the proposed curing cycle to prepare the laminates in a hot compression‐molding machine was appropriated. The mechanical properties of the BP‐based composite studied by short beam shear and compression shear tests presented no improvements compared to the base laminate. On the other hand, the thermal properties of the nanostructured composite improved as demonstrated by dynamical mechanical analyses and TGA. Besides, the reflectivity results revealed an average value of −12.2 dB in the X‐band with a maximum attenuation of 99.4% of the incident wave at 9.5 GHz. The improvements in both thermal and electromagnetic properties demonstrate the potential for both structural and multifunctional applications of the obtained BP‐composite. POLYM. ENG. SCI., 60:740–751, 2020. © 2020 Society of Plastics Engineers

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“…A surfactant, Triton X-100, was used to facilitate the dispersion of MWCNTs. The critical micelle concentration (CMC) of Triton X-100 is from 0.22 to 0.24 mM [10] and the molecular weight is 625. So, the CMC is 0.14 mg/ml by weights.…”

Section: Methodsmentioning

confidence: 99%

Tailoring of Thermo-Mechanical Properties of Hybrid Composite-Metal Bonded Joints

Khaleque¹,

Zhang²,

Thakur³

et al. 2020

Preprint

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Metallic substrates and polymer adhesive in composite-metal joints have a relatively large coefficient of thermal expansion (CTE) mismatch, which is a barrier in the growing market of electric vehicles and their battery structures. It is reported that adding carbon nanotubes (CNTs) to the adhesive reduces the CTE of the CNT enhanced polymer adhesive multi-material system, therefore when used in adhesively bonded joints it would, theoretically, result in low CTE mismatch in the joint system. The current article presents the influence of two specific mass ratios of CNTs on the CTE of the enhanced polymer. It was observed that the addition of 1.0 wt% and 2.68 wt% of multi-walled CNTs (MWCNTs) decreased the CTE of the polymer adhesive from 7.5e-5 1/C (pristine level) to 5.87e-5 1/C and 4.43e-5 1/C, respectively by 22% and 41% reduction. The reduction in the CTE was predicted, theoretically, which showed that CTE should have been reduced to 3.6e-5 1/C (52% reduction) and 1.4e-5 1/C (81% reduction). This may be due to the fact that, Raman spectroscopy of the MWCNTs identified defects in the raw material, and scanning electron microscopy (SEM) identified agglomeration of MWCNTs on the surface and cross-section of the modified polymers.

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Optimization of Triton X-100 removal and ultrasound probe parameters in the preparation of multiwalled carbon nanotube buckypaper

Cited by 55 publications

References 69 publications

A New Route to Enhance the Packing Density of Buckypaper for Superior Piezoresistive Sensor Characteristics

A New Route to Enhance the Packing Density of Buckypaper for Superior Piezoresistive Sensor Characteristics

Multifunctional Characteristics of Glass Fiber‐Reinforced Epoxy Polymer Composites with Multiwalled Carbon Nanotube Buckypaper Interlayer

Tailoring of Thermo-Mechanical Properties of Hybrid Composite-Metal Bonded Joints

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