Influence of ultrasonic dual mixing on thermal and tensile properties of MWCNTs-epoxy composite

Ghosh, P. K.; Kumar, Krishan; Chaudhary, Nayan

doi:10.1016/j.compositesb.2015.03.028

Cited by 59 publications

(22 citation statements)

References 32 publications

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“…In this sense, study of cure behavior/kinetics provides useful insights about structural evolutions . Although reinforcement of epoxy with carbon‐based fillers (CBF) has been the subject of diverse reports , a little has been learned about the explicit correlation between cure kinetics and mechanical properties of CBF/epoxy nanocomposites.…”

Section: Introductionmentioning

confidence: 99%

Design, preparation, and characterization of fast cure epoxy/amine‐functionalized graphene oxide nanocomposites

et al. 2017

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Fast cure epoxy/amine‐functionalized graphene oxide (GO) nanocomposites were designed, prepared, and characterized in this work. The GO nanosheets were functionalized by aliphatic amines having the same structure but different chain length. XPS and FTIR analyses were used to probe chemical structure and elemental surface composition of nanosheets before and after functionalization. Cure kinetics analysis was performed by dynamic differential scanning calorimetry (DSC) on samples containing pristine and functionalized GO to achieve minimum possible hindered cure. Kinetic studies confirmed that addition of pristine GO brings a steric hindrance effect, as signaled by a fall in the onset temperature, exotherm temperature and the total heat of curing reaction. According to isoconversional model, activation energy of cure reaction fell from approximately 80 to slightly over 60 kJ mol−1 as a result of improved dispersion. SEM micrographs provided evidence for good dispersion of GO platelets bearing short‐arm amines; but activation energy in such system was surprisingly higher than that of the one filled with pristine GO. By contrast, network formation in nanocomposites with GO functionalized by long‐arm amine has been facilitated, signifying the dominance of aliphatic amine length over dispersion state. The accelerated/decelerated cure is inferred based on the reactivity of reaction moieties, dispersion state of GO in the epoxy matrix, and cure behavior/kinetics of nanocomposites. The developed fast cure epoxy/GO nanocomposites compete in crosslinking with blank epoxy system. POLYM. COMPOS., 39:E2016–E2027, 2018. © 2017 Society of Plastics Engineers

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Section: Introductionmentioning

confidence: 99%

Design, preparation, and characterization of fast cure epoxy/amine‐functionalized graphene oxide nanocomposites

et al. 2017

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“…The composite containing nonfunctionalized nanotube had less influence on T g as compared to composite with functionalized nanotube. The fabrication using novel ultrasonic dual mixing (ultrasonic mixing with simultaneous magnetic stirring) of MWCNT reinforced epoxy was investigated by Ghosh et al [86] . With 1.5 wt.…”

Section: Thermal Propertiesmentioning

confidence: 99%

“…Downloaded by [University of Sussex Library] at 18:33 26 August DC electrically conductivity as a function of CNT weight percent for the various chemical treatments [81]. Downloaded by [University of Sussex Library] at 18:33 26 August Thermograms showing remaining weight fraction as a function of temperature in neat epoxy and its different amount of MWCNT containing composite UDM processed at implitude of 70%[86].…”

mentioning

confidence: 99%

Exploration of Epoxy Resins, Hardening Systems, and Epoxy/Carbon Nanotube Composite Designed for High Performance Materials: A Review

Rafique

Kausar

Anwar

et al. 2015

Polymer-Plastics Technology and Engineering

120

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Epoxy resins, is an important class of reactive polymers, have been reported to be toughened by nanoparticles. Carbon nanotube (CNT) is tubular cylinder of carbon atoms having extraordinary mechanical, electrical, and thermal properties. In this article, present state of epoxy/CNT composite is given. Types of epoxy and hardening agents commonly employed in composite processing have been thrashed out. Frequently used fabrication techniques are discussed with particular emphasis on evaluating dispersion state of nanotube. Epoxy/CNT composite offer substantially improved properties compared to traditional fiber-reinforced epoxy composites. Finally potential relevance for efficiently transforming filler properties to matrix facilitating aerospace relevance is conversed. Downloaded by [University of Sussex Library] at 18:33 26 August 2015 2

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“…However, the major issue with the use of CNTs is that they tend to agglomerate in polymer matrix . Numerous approaches have been developed to improve CNTs dispersion in polymeric matrix including addition of surfactant, use of high power ultrasonic stirring, using volatile solvent and rapid mechanical mixing with high strength . Alternatively, a single step solubilizing scheme is developed in which CNTs are mixed with surfactant in low power, high frequency sonicator for long hours (~24 h) .…”

Section: Introductionmentioning

confidence: 99%

Poly(vinyl alcohol) foams reinforced with carbon nanotubes for stapedial annular ligament applications

Bhinder

Agnihotri

2019

J of Applied Polymer Sci

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This study aims to develop carbon nanotubes (CNTs) reinforced poly(vinyl alcohol) (PVA) foams as a possible material for stapedial annular ligament (SAL) application. As-grown (AG) and purified CNTs are used as reinforcing fillers for PVA foams. Uniaxial and cyclic compression tests reveal that specific modulus and energy dissipation behavior improve after reinforcing foam with CNTs. A relatively higher improvement in specific modulus is recorded for purified CNTs as they tend to produce stiffer cell walls. Thermogravimetric analysis shows thermal stability improves after addition of CNTs in PVA foams. The 50 wt % degradation temperature is higher for PVA_AG foam in comparison to neat PVA foam. Under dynamic loading storage, modulus is found to be higher for CNT doped foams with higher relative improvement with purified CNTs than AG CNTs. It is shown that reinforcing PVA foams with purified CNTs is a feasible strategy to improve their average mechanical properties and microstructure for SAL application. While the specific elastic modulus of neat PVA foam found to be in range of 0.05-0.06 MPa gcc −1 with almost zero porosity. The addition of CNTs provides a wide range of specific elastic modulus 0.1-1.3 MPa gcc −1 with an average pores size of about 300 μm.

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Influence of ultrasonic dual mixing on thermal and tensile properties of MWCNTs-epoxy composite

Cited by 59 publications

References 32 publications

Design, preparation, and characterization of fast cure epoxy/amine‐functionalized graphene oxide nanocomposites

Design, preparation, and characterization of fast cure epoxy/amine‐functionalized graphene oxide nanocomposites

Exploration of Epoxy Resins, Hardening Systems, and Epoxy/Carbon Nanotube Composite Designed for High Performance Materials: A Review

Poly(vinyl alcohol) foams reinforced with carbon nanotubes for stapedial annular ligament applications

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