Mechanical Properties of Nanoclay and Nanoclay Reinforced Polymers: A Review

Rafiee, Roham; Shahzadi, Reza

doi:10.1002/pc.24725

Cited by 71 publications

(40 citation statements)

References 125 publications

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“…Many researchers have reported the improvement in mechanical and thermal properties of the PP/clay nanocomposites. The effect of the dispersion of the nanoparticles on the isothermal crystallization and the optical properties have also been reported . Nevertheless, only a very few works have been reported on the thermal lifetime and the thermal degradation kinetics of the PP/clay nanocomposites.…”

Section: Introductionmentioning

confidence: 99%

Thermal degradation kinetics of polypropylene/clay nanocomposites prepared by injection molding compounder

et al. 2019

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Polypropylene/clay nanocomposites with different nanoparticles are prepared using a specially designed polymer nanocomposite injection molding compounder with a hyperbolic nozzle. The thermal degradation kinetics is studied by estimating the kinetic parameter, activation energy through ASTM E1641 procedure and by the procedures suggested by ICTAC. The activation energies of PP/MMT and PP/OMHT are increasing from 121 and 147 kJ/mol K, respectively, while PP/OMMT and PP/MICA are rather on a linear or a slightly decreasing trend from 160 and 165 kJ/mol K, respectively, over the extent of conversion. The similar trend can be observed in pre-exponential factor between the different nanocomposites. The reaction model curve explains the complexity of the degradation over the extent of conversion for different nanocomposites. The optimum working temperature of the different nanocomposites prepared is estimated from the kinetic parameters obtained. The nanocomposites PP/OMMT and PP/MICA can operate for 20,000 h before losing its efficiency at 211 and 209 C, respectively, whereas, PP/MMT and PP/OMHT can operate at 165 and 198 C, respectively. The influence of the different nanoparticles, their physical and chemical characteristics in the improvement of the thermal stability has been explained.

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Section: Introductionmentioning

confidence: 99%

Thermal degradation kinetics of polypropylene/clay nanocomposites prepared by injection molding compounder

et al. 2019

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“… 1 , 2 Numerous studies have incorporated nanofillers into polymer matrices to improve the mechanical and thermal properties. 3 − 6 …”

Section: Introductionmentioning

confidence: 99%

Controlling Miscibility of the Interphase in Polymer-Grafted Nanocellulose/Cellulose Triacetate Nanocomposites

et al. 2020

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The miscibility at the interphase of polymer-grafted nanocellulose/cellulose triacetate (CTA) composite films was tailored using different casting solvents. The polymer-grafted cellulose nanofibrils were prepared by modifying surfaces of 2,2,6,6-tetramethylpiperidine-1-oxyl-oxidized nanocellulose with amine-terminated poly(ethylene glycol) (PEG). The PEG-grafted nanocelluloses were individually dispersed in dichloromethane, 1,4-dioxane, and N , N -dimethylacetamide. The PEG-grafted nanocellulose/CTA composite films were prepared by mixing the nanocellulose dispersion and CTA solution and subsequent casting-drying. The miscibility of PEG and CTA at the interphase of the composite was controlled by controlling the solvent, which was confirmed by dynamic mechanical analysis. All the composite films showed high optical transparency. However, the mechanical properties of the composites differed because of the difference in the PEG/CTA interfacial miscibility. The composite films with better PEG/CTA interfacial miscibility showed higher Young’s modulus, strength, and toughness. This interfacial design technique paves the way to exploiting the reinforcing potential of highly transparent and hydrophobic surface-grafted nanocellulose/polymer composite materials.

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“…In composites, nanofillers have an advantage over microfillers, because of their increased surface area and, consequently, higher interfacial adhesion, which enhances the mechanical properties of the composites [1][2][3][4][5]. Nanodiamonds (NDs) are~5 nm sized carbon particles in which sp 3 hybridized carbon is in a diamond cubic crystal structure, surrounded with sp 2 carbon on the shell.…”

Section: Introductionmentioning

confidence: 99%

Stimuli-Responsive Nanodiamond–Polyelectrolyte Composite Films

et al. 2020

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Nanodiamonds (NDs) can considerably improve the mechanical and thermal properties of polymeric composites. However, the tendency of NDs to aggregate limits the potential of these non-toxic, mechanically- and chemically-robust nanofillers. In this work, tough, flexible, and stimuli-responsive polyelectrolyte films composed of cross-linked poly(butyl acrylate-co-dimethylaminoethyl methacrylate) (P(BA-co-DMAEMA)) were prepared by photopolymerization. The effects of the added carboxylate-functionalized NDs on their mechanical and stimuli-responsive properties were studied. When the negatively charged NDs were added to the polymerization media directly, the mechanical properties of the films changed only slightly, because of the uneven distribution of the aggregated NDs in the films. In order to disperse and distribute the NDs more evenly, a prepolymerized polycation block copolymer complexing agent was used during the photopolymerization process. This approach improved the mechanical properties of the films and enhanced their thermally-induced, reversible phase-transition behavior.

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Mechanical Properties of Nanoclay and Nanoclay Reinforced Polymers: A Review

Cited by 71 publications

References 125 publications

Thermal degradation kinetics of polypropylene/clay nanocomposites prepared by injection molding compounder

Thermal degradation kinetics of polypropylene/clay nanocomposites prepared by injection molding compounder

Controlling Miscibility of the Interphase in Polymer-Grafted Nanocellulose/Cellulose Triacetate Nanocomposites

Stimuli-Responsive Nanodiamond–Polyelectrolyte Composite Films

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