Barrier properties of nylon 6-montmorillonite nanocomposite membranes prepared by melt blending: Influence of the clay content and dispersion stateConsequences on modelling

Picard, Emilie; Vermogen, Alexandre; Gérard, Jean‐François; Espuche, Éliane

doi:10.1016/j.memsci.2007.01.030

Cited by 284 publications

(218 citation statements)

References 32 publications

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“…The results reported in Table 2 show at first that the crystallinity degree values and the gas permeability coefficients determined on the neat matrices are in good agreement with those commonly reported in the literature [17,21,33]. PA matrix is characterized by enhanced gas barrier properties despite its lower crystallinity rate.…”

Section: Binary Systems: Pa/mmt-oh and Pe/mmt-tallowsupporting

confidence: 87%

“…The TEM observations were performed on a JEOL-200CX microscope operating at 200 kV. A quantitative analysis of the TEM images was performed according to the protocol described in a previous study [21]. The diffraction patterns were obtained at room temperature in the range of 2h between 1 and 10°by step of 0.02°using a Cu tube and a Siemens D500 diffractometer where the kb line was removed with a nickel filter.…”

Section: Nanocomposites Characterizationmentioning

confidence: 99%

“…A lot of attention has been particularly paid these last years on nanofillers such as clays to reinforce PA or PE properties [17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36]. Indeed due to their high aspect ratio and their impermeable character, the clay platelets are expected to induce significant tortuosity effects when they are dispersed within a polymer matrix.…”

Section: Introductionmentioning

confidence: 99%

“…Indeed due to their high aspect ratio and their impermeable character, the clay platelets are expected to induce significant tortuosity effects when they are dispersed within a polymer matrix. Different models [21,[37][38][39][40][41][42] have been proposed in the literature to express the tortuosity factor as a function of the shape, orientation, dispersion state and volume fraction of the dispersed impermeable particles.…”

Section: Introductionmentioning

confidence: 99%

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Reinforcement of the Gas Barrier Properties of Polyethylene and Polyamide Through the Nanocomposite Approach: Key Factors and Limitations

Picard

Gérard

Espuche

2013

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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Re´sume´-Renforcement des proprie´te´s barrie`re aux gaz de matrices polye´thyle`ne et polyamide par l'approche nanocomposite : facteurs cle´s et limitations -Dans cette e´tude, des nanocomposites sont pre´pare´s par voie fondue pour deux matrices, une matrice polyamide 6 (PA6) et une matrice polye´thyle`ne (PE), leur morphologie ainsi que leurs proprie´te´s barrie`res sont e´tudie´es. Les argiles organophiles sont choisies en fonction de la nature chimique de chacune des matrices polyme`res. Les nanocomposites pre´pare´s a`partir de polyamide 6 pre´sentent une structure exfolie´e et des proprie´te´s barrie`res ame´liore´es alors qu'une morphologie de type microcomposite ne conduisant aà ucune ame´lioration des proprie´te´s barrie`res est obtenue pour le syste`me PE/montmorillonite. Diffe´rents polye´thyle`nes modifie´s sont alors e´value´s en tant qu'agents compatibilisants pour les syste`mes PE. Les effets de la masse molaire, de la polarite´et de la fraction massique d'agent compatibilisant sur la dispersion des charges et sur les proprie´te´s barrie`res sont e´tudie´s. Un taux massique d'agent compatibilisant e´gal a`4 fois celui des charges s'ave`re eˆtre optimal pour l'ensemble des agents compatibilisants. Par ailleurs, la masse molaire des agents compatibilisants joue un roˆle primordial sur l'e´tat de dispersion des charges. Contrairement aux syste`mes PA, les proprie´te´s barrie`res des syste`mes PE ne sont pas directement relie´es a`l'e´tat de dispersion des charges mais de´pendent e´galement des interfaces charges/matrice. Les PE oxyde´s de faible masse molaire sont identifie´s comme des agents compatibilisants particulie`rement inte´ressants pour les proprie´te´s barrie`res et une optimisation pas a`pas des syste`mes est entreprise. Une combinaison de PE oxyde´de faible masse molaire et de PE greffe´anhydride male´ique de haute masse molaire conduisant a`diviser la perme´abilite´aux gaz du nanocomposite d'un facteur 2 par rapport a`la matrice PE s'ave`re particulie`rement inte´ressante.Abstract -Reinforcement of the Gas Barrier Properties of Polyethylene and Polyamide Through the Nanocomposite Approach: Key Factors and Limitations -In this study, polyamide 6 (PA6) and polyethylene (PE) nanocomposites were prepared from melt blending and a detailed characterization of the nanocomposite morphology and gas barrier properties was performed. The choice of the organoclay was adapted to each polymer matrix. Exfoliated morphology and improved gas transport Oil & Gas Science and Technology -Rev. IFP Energies nouvelles, Vol. 70 (2015), No. 2, pp. 237-249 Ó E. Picard et al., published by IFP Energies nouvelles, 2013 DOI: 10.2516 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.properties were obtained by melt mixing the polar PA6 matrix and the organoclay, whereas a microcomposite with poor...

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Section: Binary Systems: Pa/mmt-oh and Pe/mmt-tallowsupporting

confidence: 87%

Section: Nanocomposites Characterizationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Reinforcement of the Gas Barrier Properties of Polyethylene and Polyamide Through the Nanocomposite Approach: Key Factors and Limitations

Picard

Gérard

Espuche

2013

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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“…Unique features of nanoclay additives are; high modulus, its ability to be dispersed in platelet form within polymer matrix, and individual clay particle has very high aspect ratio with surface area of around 600 nanometers square and thickness of only one to a few nanometers. Earlier studies have reported improved properties in the final products derived by clay loading as low as 0.5 wt% compared to conventional composites with a large amount of fillers [6][7][8][9][10][11]. Earlier studies report improved mechanical and thermal stability properties [5,[12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Crystallization kinetics and morphology of melt spun poly(ethylene terephthalate) nanocomposite fibers

Hegde¹,

Bhat²,

Deshpande³

2013

Express Polym. Lett.

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Abstract. Natural nanoclay closite Na + incorporated melt spun poly(ethylene terephthalate) (PET) fibers were investigated for crystallization kinetics and morphology. Nature of clay dispersion and nanocomposite morphology were assessed using wide angle X-ray diffraction (WAXD) and transmission electron microscopy (TEM). Fiber mechanical properties were measured using single fiber tensile test. Combination of scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) was used to investigate the fiber failure mode. Among nanocomposite PET fibers, sample with 1% clay performed better. WAXD and TEM micrographs of the fibers revealed intercalated and delaminated morphology. Size of agglomerate increased with percentage of add-on. SEM surface images showed significant variation in fiber diameter, voids and imperfections. Cross-sections of fractured surfaces revealed the presence of clay agglomerates at failure spots. Nanoclay reinforcement did not incur mechanical property benefits due to increase in voids and agglomerates in fiber section, especially at loading levels higher than one percent.

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Polymer–Clay Nanocomposites

Kamal

Uribe-Calderón

2012

Wiley Encyclopedia of Composites

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The incorporation of nanoparticles in polymer matrices leads to improvements in several physical properties. As a result, nanocomposites have the potential to be used in various fields such as medical devices, automotive and aerospace applications, packaging, and building materials. This article attempts to describe the various types of nanoparticles and polymeric systems that have been involved in nanocomposite production. Particular emphasis is placed on polymer‐clay nanocomposites, their properties, and the issues related to their production. Thermoplastic, thermoset, biopolymer, and rubber matrices are considered. The effects of nanoclay particles on the physical properties is reported, with due consideration to rheology, mechanical, thermal, barrier and electrical properties, and crystalline morphology. Thermodynamic aspects influencing nanocomposite synthesis, deagglomeration‐delamination of nanoclay and surface energy considerations are discussed. Successful nanocomposite synthesis leading to desirable performance characteristics requires uniform nanoparticle distribution and acceptable levels of exfoliation and/or intercalation of clay, in addition to good interfacial adhesion at the polymer‐clay interface.

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Barrier properties of nylon 6-montmorillonite nanocomposite membranes prepared by melt blending: Influence of the clay content and dispersion stateConsequences on modelling

Cited by 284 publications

References 32 publications

Reinforcement of the Gas Barrier Properties of Polyethylene and Polyamide Through the Nanocomposite Approach: Key Factors and Limitations

Reinforcement of the Gas Barrier Properties of Polyethylene and Polyamide Through the Nanocomposite Approach: Key Factors and Limitations

Crystallization kinetics and morphology of melt spun poly(ethylene terephthalate) nanocomposite fibers

Polymer–Clay Nanocomposites

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