Effect of sonication and clay content on the properties of unsaturated polyester/montmorillonite nanocomposites

Romanzini, Daiane; Silva, Adriana A.; Soares, Bluma G.; Zattera, Ademir J.; Amico, Sandro Campos

doi:10.1177/0021998316644847

Cited by 15 publications

(21 citation statements)

References 23 publications

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“…% of the used nanofillers may increase the viscosity of the epoxy, make it difficult to distribute HNC into epoxy, leading to an inadequate distribution of HNC, and offer opportunities to form the agglomeration and clusters which adversely affect the crashworthiness properties. Referring to Ho et al, 53 Azeez et al, 54 Islam et al, 55 Rafiq et al, 56 Fathy et al, 57 Romanzini et al, 58 and Bahari-Sambran et al, 59 the most beneficial effect is in general attained with a small wt. % of nanofillers, that is, less than 5 wt.…”

Section: Methodsmentioning

confidence: 97%

Potentiality of halloysite nanoclay on crashworthiness performance of polymer composite tubular elements

El‐baky

Hegazy

Hassan

et al. 2022

Journal of Composite Materials

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The recent article investigates the impact of the presence of halloysite nanoclay (HNC) on crashworthiness performance of glass/epoxy energy absorbent composite tubes. Specimens filled with 0,1,2,3, and 4 wt. % of HNC were manufactured via wet-wrapping process and tested under quasi-static axial loadings. The crush load-displacement response, initial crushing load [Formula: see text], average crushing load ([Formula: see text]), crushing force efficiency ( CFE), absorbed energy ( U), and specific absorbed energy ( SEA) for the proposed composites were determined. The crushing behaviors for all specimens were traced. It was indicated that the specimens’ failure mechanisms and the energy absorption capacities of nanofilled glass/epoxy composites are highly dominated by the wt. % of the embedded HNC. The inclusion of HNC enhances the energy absorbing capacities of glass/epoxy composites during the crushing process. Composite tubes filled with 4 wt. % of HNC has the highest load carrying and energy absorption capacities which are, respectively, 32.75 kN and 1110.84 J. So, they are the most suitable materials for energy dissipating elements. The inclusion of 1, 2, 3, and 4 wt. % of HNC to glass/epoxy composite tubes exhibits, respectively, an enhancement of 8.56, 35.76, 37.96, and 53.33% in [Formula: see text] and an enhancement of 169.29, 215.76, 204.60, and 254.19% in the [Formula: see text]. Also, an improvement in the energy absorbing by, respectively, 220.43, 270.09, 249.11, and 320.98% was attended. The purpose of this work is to experimentally study the applicability of HNC in the energy dissipating composite tubular elements.

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Section: Methodsmentioning

confidence: 97%

Potentiality of halloysite nanoclay on crashworthiness performance of polymer composite tubular elements

El‐baky

Hegazy

Hassan

et al. 2022

Journal of Composite Materials

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“…Since the organically modified montmorillonite (OMMT) was firstly introduced into Nylon‐6 matrix by Toyota research group, discovering that very small amounts of layered silicate loadings resulted in improvements of thermal and mechanical properties, OMMT‐based nanocomposites have attracted keen interest in academics and industry. Followed reports showed that mechanical properties, thermostability, flame retardancy, volumetric shrinkage, and the gas barrier effect could be greatly improved by the incorporation of OMMT nanoparticles. These improvements are attributed to the intercalated or exfoliated structure of clay in the polymer matrix.…”

Section: Introductionmentioning

confidence: 99%

Unsaturated polyester/montmorillonite nanocomposites with improved mechanical and thermal properties fabricated by in situ polymerization

Wang

et al. 2017

J of Applied Polymer Sci

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Although organically modified montmorillonite (OMMT) has been incorporated into unsaturated polyester (UP) resin to enhance properties, the aggregation often leads to defects which directly affect the properties of nanocomposites. In this work, OMMT slurry modified by a new allyl surfactant with carbon-carbon double bond, hexadecyl allyl dimethyl ammonium chloride (C 16 -DMAAC), was employed to prepare nanocomposites by in situ polymerization. The results illustrated that the existence of OMMT slurry helped monomers enter the OMMT galleries, leading to well-dispersed OMMT in the UP matrix. The mechanical properties and thermal properties of OMMT nanocomposites were improved. With OMMT loading of 5 wt %, the tensile strength and flexural strength can be improved by 22% and 38%, respectively. Meanwhile, the onset thermal decomposition temperature (T -10 ) value was ameliorated from 310.6 8C to 330.6 8C.

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“…It can also be used in extrusion processes to form fruit coating, in the packaging of juices, dairy products and in the production of bottles for beer and carbonated beverages. The polymeric matrices used for the incorporation of nanocomposite include polyamides, polyolefins, polystyrene, ethylene vinyl acetate, polyethylene, among others (Barbalho, 2018;Romanzini et al, 2017;Decker et al, 2015;Chaudhry et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Caracterização de filmes de polietileno de baixa densidade incorporados com diferentes concentrações de montmorilonita

Coelho

Geraldine

Silveira

et al. 2020

RSD

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This work aimed to evaluate the effect of incorporating different concentrations of montmorillonite in low-density polyethylene films. The incorporation Cloisite® 10A nanocomposite in the films was carried out using a single screw extruder modular. After the incorporation of six concentrations of organophilic montmorillonite clay (0.5, 1.0, 1.5, 2.0, 2.5 and 3.0%, w/w) to the films, their optical, mechanical (tensile strength, elongation and Young modulus), and gas barrier (CO2) properties were investigated. The degree of exfoliation was evaluated through the analysis of X-ray diffraction. The incorporation of nanoparticles from montmorillonite increased the opacity of the films. Regarding their mechanical properties, the incorporated films with montmorillonite presented reductions in tensile strength and elongation values, whereas the modulus of elasticity did not show any significant difference. They also showed an increase in the permeability of CO2. The analysis of X-ray diffraction showed no formation of nanocomposites. It was observed, therefore, that the properties of the films were affected by the incorporation of montmorillonite clay.

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Effect of sonication and clay content on the properties of unsaturated polyester/montmorillonite nanocomposites

Cited by 15 publications

References 23 publications

Potentiality of halloysite nanoclay on crashworthiness performance of polymer composite tubular elements

Potentiality of halloysite nanoclay on crashworthiness performance of polymer composite tubular elements

Unsaturated polyester/montmorillonite nanocomposites with improved mechanical and thermal properties fabricated by in situ polymerization

Caracterização de filmes de polietileno de baixa densidade incorporados com diferentes concentrações de montmorilonita

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