Thermal stability of PMMA-clay hybrids

Choudhury, Tanushree; Misra, Nirendra M.

doi:10.1007/s12034-010-0023-y

Cited by 17 publications

(7 citation statements)

References 11 publications

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“…When it comes to mechanical properties, nanoclays are more efficient than classical fillers in strengthening the polymer matrices, especially when they are added in small amounts. Volume fractions of the clay fillers as low as 1-3 % can result in tremendous increase in both stiffness and strength while exerting no influence on the overall density of material [8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Influence of the Organophilisation Process on Properties of the Bentonite Filler and Mechanical Properties of the Clay/Epoxy Nanocomposites

Rapacz-Kmita

Moskała

Dudek

et al. 2016

Archives of Metallurgy and Materials

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In this comparative study, the influence of the organophilisation process on the properties of resulting organobentonite fillers and their capability to improve the mechanical properties of clay/polymer nanocomposites were investigated. The organobentonites were obtained by activation with the use of two organic quaternary ammonium salts (QAS) with alkyl chains of significantly different lengths. The organophilisation resulted in an increase in the interlayer space of clays, which was confirmed by XRD analysis. The obtained organofillers were used to produce nanoclay/epoxy resin composites and the effects of alkyl chain length on the resulting properties of composites were compared based on the examination of mechanical behaviour and morphology, and a composite filled with the non organophilised bentonite was used as a reference material. It was demonstrated that the organophilisation process using distearyldimethyl ammonium chloride salt with a longer alkyl chain (C18-C20) created a more superior conditions for the compatibility of nanofiller with a polymer matrix, resulting in a 25 % increase in the bending strength of the epoxy composite material filled with 3 %wt of the organophilised bentonite, comparing to neat epoxy.

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Section: Introductionmentioning

confidence: 99%

Influence of the Organophilisation Process on Properties of the Bentonite Filler and Mechanical Properties of the Clay/Epoxy Nanocomposites

Rapacz-Kmita

Moskała

Dudek

et al. 2016

Archives of Metallurgy and Materials

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“…Figure ( 1 ) shows the X-ray diffraction patterns of APES treated Mt (PS1) and photocatalyst powder samples PS2 and PS3. PS1 shows characteristic Mt reflection at 2θ= 5.21A o , which becomes broad and flattened one in PS2 and PS3, indicating complete intercalation of polyoxometalate Ti 4+ ions into interlayer space leading to an exfoliated and homogenous structure [42]. PS2 and PS3 show only anatase phase (JCDPS No 89-4921) at 2θ= 25.52A o .…”

Section: Resultsmentioning

confidence: 99%

Treatment of Methylene Blue and Methyl Orange Dyes in Wastewater by Grafted Titania Pillared Clay Membranes

Choudhury

2018

NANOTEC

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Background: Amphoteric membranes such as Titania Pillared Clay (TiPILC) membranes exhibit different charges at different pH ranges, subsequently show efficient separation for cationic and anionic organic pollutants in wastewater based on solution pH. The structural properties of such membranes determine their permeability and selectivity to a large extent. The present work is initiated to explore the possibility of enhancing the surface area of TiPILC membranes by grafting with 3-aminopropyltriethoxysilane.Method: Grafted TiPILC membranes were fabricated by colloidal sol- gel route followed by dip coating, drying and sintering the membranes at 300oC. X-ray diffraction (XRD) spectra of the pillared photocatalyst membranes show the presence of only anatase phase, which exhibits better photocatalytic activity. Fourier Transform Infrared (FT-IR) spectra reveal the formation of delaminated TiPILC material. The specific surface area of TiPILC membrane obtained at pH3.5 is 183m2/g.Results: Literature survey of 47 papers was carried out for the work. 10 papers were based on patents being dealt on degradation of organic dyes in wastewater by conventional methods, though reports of membrane technology are limited in literature. The rest 37 papers outlined the importance of widespread use of titania photocatalyst powder for degradation studies.Conclusion: The membrane material thus developed is efficient in complete decolouration of both Methylene Blue and Methyl Orange dyes on account of the high surface charge and high surface area in just one cycle of filtration.

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“…Moreover, strong vibration absorption peak of the carbonyl group -C=O exists at 1725 cm 21 in the corresponding curve. [18][19][20] XRD Figure 4 shows the XRD pattern of organophilic kaolinitic black shale and rubber-MOK composites (4 part per hundred parts of rubber (phr)). The d-spacing of unmodified kaolinitic black shale is about 1.641 and 1.539 nm on a base of 2u = 12.39 and 2u = 20.87, respectively, as shown in Figure 2 (calculated as per Bragg's diffraction equation 2d sin u = l, where d is the interlayer spacing of clay, u = reflection angle, and l = wavelength of X-ray used for the diffraction experiment).…”

Section: Ftir Measurementsmentioning

confidence: 99%

Preparation and characterization of black shale–reinforced ethylene propylene diene monomer nanocomposites

El‐Nashar

Khalaf

Temraz

2012

Proceedings of the Institution of Mechanical Engineers, Part N:

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Organophilic kaolinitic black shale was prepared through incorporation of cetyl trimethyl ammonium bromide (CTAB C16) as surfactant with natural kaolinitic black shale. It was characterized by X-ray diffraction, Fourier transform infrared spectroscopy, and transmission electron microscopy. The acrylic acid modifying agent can be utilized to improve the distribution of the organophilic kaolinitic black shale in the rubber matrix. The ethylene propylene diene monomer was mixed with different concentrations of modified organophilic kaolinitic black shale. The dispersion of the modified organophilic kaolinitic black shale was characterized by scanning electron microscopy and X-ray diffraction, which confirmed the formation of exfoliated nanocomposites at lower clay content. The elastomeric compound was filled with kaolinitic black shale and then it was analyzed by undergoing the physicomechanical properties and thermal gravimetric analysis. The nanocomposites showed remarkable improvements in tensile strength, elongation at break, Young's modulus, and hardness. In addition, increase in thermal stability due to the presence of modified organophilic kaolinitic black shale was observed.

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Thermal stability of PMMA-clay hybrids

Cited by 17 publications

References 11 publications

Influence of the Organophilisation Process on Properties of the Bentonite Filler and Mechanical Properties of the Clay/Epoxy Nanocomposites

Influence of the Organophilisation Process on Properties of the Bentonite Filler and Mechanical Properties of the Clay/Epoxy Nanocomposites

Treatment of Methylene Blue and Methyl Orange Dyes in Wastewater by Grafted Titania Pillared Clay Membranes

Preparation and characterization of black shale–reinforced ethylene propylene diene monomer nanocomposites

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