Preparation of α-zirconium phosphate nanoplatelets with wide variations in aspect ratios

Sun, Luyi; Boo, Woong J.; Sue, Hung‐Jue; Clearfield, Abraham

doi:10.1039/b604054c

Cited by 280 publications

(278 citation statements)

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“…Layered α-zirconium phosphate (ZrP) is an alternative nanoplatelet to montmorillonite clay for developing the preliminary structure-property relationship of polymer/layered inorganic nanocomposites, since ZrP has exchangeable cations, narrow particle size distribution and controllable aspect ratio [18], [19], [20], [23], [24], [25] and [26]. In this work, ZrP was synthesized by refluxing zirconyl chloride (ZrOCl2·8H2O, 98%, Aldrich) in 10 mol/L phosphoric acid (H3PO4, ≥85%, solution in water, A.C.S.…”

Section: Preparation Of α-Zirconium Phosphate (Zrp)mentioning

confidence: 99%

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Study on intumescent flame retarded polystyrene composites with improved flame retardancy

Wilkie

2010

Polymer Degradation and Stability

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Abstract:The flame retardancy and thermal stability of ammonium polyphosphate/tripentaerythritol (APP/TPE) intumescent flame retarded polystyrene composites (PS/IFR) combined with organically-modified layered inorganic materials (montmorillonite clay and zirconium phosphate), nanofiber (multiwall carbon nanotubs), nanoparticle (Fe2O3) and nickel catalyst were evaluated by cone calorimetry, microscale combustion calorimetry (MCC) and thermogravimetric analysis (TGA). Cone calorimetry revealed that a small substitution of IFR by most of these fillers (≤2%) imparted substantial improvement in flammability performance. The montmorillonite clay exhibited the highest efficiency in reducing the peak heat release rate of PS/IFR composite, while zirconium phosphate modified with C21H26NClO3S exhibited a negative effect. The yield and thermal stability of the char obtained from TGA correlated well with the reduction in the peak heat release rate in the cone calorimeter. Since intumesence is a condensed-NOT THE PUBLISHED VERSION; this is the author's final, peer-reviewed manuscript. The published version may be accessed by following the link in the citation at the bottom of the page.

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Section: Preparation Of α-Zirconium Phosphate (Zrp)mentioning

confidence: 99%

“…In this work, ZrP was synthesized by refluxing zirconyl chloride (ZrOCl2·8H2O, 98%, Aldrich) in 10 mol/L phosphoric acid (H3PO4, ≥85%, solution in water, A.C.S. reagent, Sigma-Aldrich) for 24 h [26]. The XRD pattern shown in Fig.…”

Section: Preparation Of α-Zirconium Phosphate (Zrp)mentioning

confidence: 99%

Study on intumescent flame retarded polystyrene composites with improved flame retardancy

Wilkie

2010

Polymer Degradation and Stability

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“…Addition of impermeable fillers of varying surface chemistry and aggregate size/aspect ratio has been presented as an interesting alternative to polymer blending, due to the possibility to tune the shape and size of the dispersed phase before its introduction within the polymer matrix [14][15][16]. 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].…”

Section: Introductionmentioning

confidence: 99%

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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“…A previously reported study from our group 6 suggests that for the crystal growth time 48 hours or above, the edge of the disks become sharper. Usually, the reflux method yields nanodisks smaller in size and less regularly hexagonal in shape than the α-ZrP obtained by hydrothermal method at similar reaction conditions including concentration of phosphoric acid and reaction time 6,7 . Figure 1d shows DSL result of the size distribution of exfoliated ZrP suspensions by three different synthesize methods accordingly.…”

Section: Representative Resultsmentioning

confidence: 99%

“…For the synthesis of layered crystals of ZrP, hydrothermal and reflux methods are commonly adopted 6,7 . Hydrothermal method gives a good control on size ranging from 400 to 1,500 nm and polydispersity within 25% 6 , while reflux method gives smaller crystals for the same duration time.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Exfoliation of Discotic Zirconium Phosphates to Obtain Colloidal Liquid Crystals

Wang

Shinde

et al. 2016

JoVE

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Due to their abundance in natural clay and potential applications in advanced materials, discotic nanoparticles are of interest to scientists and engineers. Growth of such anisotropic nanocrystals through a simple chemical method is a challenging task. In this study, we fabricate discotic nanodisks of zirconium phosphate [Zr(HPO 4 ) 2 ·H 2 O] as a model material using hydrothermal, reflux and microwave-assisted methods. Growth of crystals is controlled by duration time, temperature, and concentration of reacting species. The novelty of the adopted methods is that discotic crystals of size ranging from hundred nanometers to few micrometers can be obtained while keeping the polydispersity well within control. The layered discotic crystals are converted to monolayers by exfoliation with tetra-(n)-butyl ammonium hydroxide [(C 4 H 9 ) 4 NOH, TBAOH]. Exfoliated disks show isotropic and nematic liquid crystal phases. Size and polydispersity of disk suspensions is highly important in deciding their phase behavior. Video LinkThe video component of this article can be found at

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Preparation of α-zirconium phosphate nanoplatelets with wide variations in aspect ratios

Cited by 280 publications

References 26 publications

Study on intumescent flame retarded polystyrene composites with improved flame retardancy

Study on intumescent flame retarded polystyrene composites with improved flame retardancy

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

Synthesis and Exfoliation of Discotic Zirconium Phosphates to Obtain Colloidal Liquid Crystals

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