Exfoliable organo-montmorillonite nano-fillers for polymer/ceramic composites

Goldstein, Adrian; Beer, Meike V.

doi:10.1016/j.jeurceramsoc.2003.11.013

Cited by 7 publications

(4 citation statements)

References 28 publications

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“…Firstly, the presence of recycled cellulose has imparted improvements in flexural strength and flexural modulus but mixed results have been observed for nano-dispersion of kaolinite. This is contrary to the dramatic improvement in strength previous reported due to the nano-dispersion of clay particles [14]. This observation can be attributed to the poor dispersion of the clay particles within the epoxy matrix because of agglomeration.…”

Section: Resultscontrasting

confidence: 85%

Synthesis and Properties of Recycled Paper-Nano-Clay-Reinforced Epoxy Eco-Composites

Low

Somers

2007

KEM

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Epoxy ecocomposites reinforced with recycled paper (rP) and nano-kaolinite (nK) have been synthesized. The effect of seawater soaking on the flexural and impact properties have been characterized. This new but cost-effective approach has been developed to improve the physical and mechanical properties of polymeric materials without adversely affecting their processing characteristics. The micromechanisms of toughening and failure processes are discussed.

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Section: Resultscontrasting

confidence: 85%

Synthesis and Properties of Recycled Paper-Nano-Clay-Reinforced Epoxy Eco-Composites

Low

Somers

2007

KEM

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“…Na-MMT conditioned in ambient humidity (undried) and dried (140 °C for 3 h) Na-MMT with <0.3% w/w H 2 O were used. Goldstein and Beer reported that the Na-MMT (Nanocor PGW) consists of rounded edge, variable shape, porous agglomerates with particle size of 5−45 μm range, and specific surface area of ∼4 m 2 g -1 . The probes investigated included ethanol (EtOH), 1-butanol ( n BuOH), 2-propanol ( i PrOH), and diethyl ether (EtOEt).…”

Section: Methodsmentioning

confidence: 99%

Interfacial Interactions in Polymer-Layered Silicate Nanocomposites

et al. 2008

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Interactions between sodium montmorillonite (Na-MMT) and a variety of probes, some of which are intended to model components of a polyurethane system, have been studied. Particular attention was given to the effect of preadsorbed water on the adsorption behavior of the probes. Flow microcalorimetry (FMC), diffuse reflectance Fourier transform infrared spectroscopy (DRIFTS), and wide-angle X-ray scattering (WAXS) were used to monitor the adsorption process. The probe set included alcohols, amines, ethers, poly(propylene glycol) monobutyl ethers (PPG), and 4-ethylphenyl isocyanate (4-EPI). FMC revealed that the preadsorbed water molecules on undried Na-MMT hindered the adsorption of alcohol and ether probes, but had little effect on the adsorption of amines. Drying of Na-MMT to less than 0.3% w/w H2O led to an increase in heat of adsorption and generally greater retention of the probes. PPG showed strong interaction with Na-MMT due to multipoint adsorption. With dried Na-MMT, WAXS revealed that PPG of molecular weight (MW) 1000 was partly intercalated into the gallery while lower molecular weight PPG (MW 340) did not intercalate the Na-MMT. DRIFTS spectra of 4-EPI adsorbed on undried Na-MMT revealed urea linkages, indicating formation of N,N'-bis(4-ethylphenyl) urea. In contrast, with dried Na-MMT the 4-EPI formed a urethane linkage with hydroxyl groups present at the edges of the silicate platelets.

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“…As well documented by many investigators [42][43][44][45][46][47], MMT consists of one alumina octahedral sheet sandwiched between two silica tetrahedral sheets in which the fundamental unit is ~ a one nanometer (nm) thick, and has an approximately one hundred to several hundred nm long planar structure. Importantly, the basal space and gallery of ~ filler is the intercalation of such organic macromolecule ion exchangers containing a long alkyl chain linked to ionic amine into the gallery, thereby substantially expanding the gallery.…”

Section: Pps/clay Nanocompositementioning

confidence: 99%

High-Performance Coating Materials

Sugama¹

2007

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Exfoliable organo-montmorillonite nano-fillers for polymer/ceramic composites

Cited by 7 publications

References 28 publications

Synthesis and Properties of Recycled Paper-Nano-Clay-Reinforced Epoxy Eco-Composites

Synthesis and Properties of Recycled Paper-Nano-Clay-Reinforced Epoxy Eco-Composites

Interfacial Interactions in Polymer-Layered Silicate Nanocomposites

High-Performance Coating Materials

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