Preparation and characterization of poly(vinyl alcohol)‐modified red mud composite materials

Bhat, A. H.; Banthia, A. K.

doi:10.1002/app.25180

Cited by 20 publications

(18 citation statements)

References 24 publications

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“…Thus, some earlier works reported by UV‐Vis spectroscopy the impact in optical properties of polymer nanocomposites based in MMT containing between 3 and 10% of the clay inside petroleum‐derived polymers, such as nylon,13 polyimide,14 PVC,15 polyvinyl alcohol,16, 17 and other commodities 18. There are also other works, which reported some reduction of the UV‐Vis transmission in polyvinyl alcohol containing between 0.5–10 wt % content of Red Mud19 and also in PMMA containing 1 to 5 wt % content of 10‐undecenoate intercalated layered double hydroxides 20. In spite of this, there is no previous literature regarding the use of clay based systems as an intended route to generate UV blocking properties in films or coatings and neither was the study of mica‐based clays to enhance the overall barrier properties of bioplastics.…”

Section: Introductionmentioning

confidence: 90%

Novel clay‐based nanobiocomposites of biopolyesters with synergistic barrier to UV light, gas, and vapour

Sánchez-García¹,

Lagarón²

2010

J of Applied Polymer Sci

108

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This article presents novel solvent cast biocomposites of poly(lactic acid) (PLA), polyhydroxybutyrate-co-valerate (PHBV), and polycaprolactone (PCL) with enhanced barrier properties to UV light, oxygen, water, and limonene by means of incorporating an organomodified mica-based clay grade. The TEM results suggested a good clay dispersion but with no exfoliation in the three biopolyesters. In agreement with the crystallinity data, which was found to generally increase with increasing filler content, oxygen but specially water and D-limonene permeability coefficients were seen to decrease to a significant extent in the biocomposites and an optimum property balance was found for 5 wt % of clay loading in the three biopolymers. With increasing clay content, the light transmission of these biodegradable biocomposites decreased by up to 90% in the UV wavelength region due to the specific UV blocking nature of the clay used. As a result, these new biocomposites can have significant potential to develop packaging films, coatings and membranes with enhanced gas and vapor barrier properties and UV blocking performance.

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Section: Introductionmentioning

confidence: 90%

Novel clay‐based nanobiocomposites of biopolyesters with synergistic barrier to UV light, gas, and vapour

Sánchez-García¹,

Lagarón²

2010

J of Applied Polymer Sci

108

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“…The incorporation of red mud seems to destroy the orientation of semicrystalline polymer and to convert the polymer morphology approaching to amorphous state. [Bhat & Banthia, 2007] The SP5 showed much smooth morphology that is different to crystallites of PVA observation. This result is consistent with the wide-angle powder XRD patterns as described previously.…”

mentioning

confidence: 87%

Thermoplastic Polymer based Modified Red Mud Composites Materials

Bhat¹,

Khalil²,

Banthia³

2011

Advances in Composite Materials - Ecodesign and Analysis

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“…Flocculants of varying sizes, were found at the surface. The incorporation of modified red mud seems to destroy the orientation of semicrystalline polymer and thereby converting the polymer morphology approaching to amorphous state [17]. The PRC2 shows much smooth morphology than PRC3, predicting more exfoliation in the former case.…”

Section: Particle Size Distribution Of Red Mud and Modified Red Mudmentioning

confidence: 98%

Dielectric and Material Properties of Poly (Vinyl Alcohol): Based Modified Red Mud Polymer Nanocomposites

et al. 2011

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Red mud emerges as the major waste material during production of alumina from bauxite by the Bayer's process. Based on economics as well as environmental related issues, enormous efforts have been directed worldwide towards red mud management issues i.e. of utilization, storage and disposal. The present research work has been undertaken with an objective to explore the use of red mud as a reinforcing material in the polymer matrix as a low cost option. The silicate layered red mud was organophilized by aniline formaldehyde and to know the effect of various filler loading on the material properties of PVA-organophilized red mud composites, prepared by a conventional solvent casting technique and comparison of the same with that of the virgin poly (vinyl alcohol) (PVA), various characterizations was done. The modified red mud was typically characterized by X-ray diffraction. The X-ray diffraction pattern of the composite materials was also studied. The morphological image of the composite materials was studied by scanning electron microscopy (SEM). Transmission electron microscopy (TEM) was used to characterize the dispersion of the red mud within the composite materials. The surface topography of the composite materials was studied by Atomic Force Microscopy (AFM). The dielectric properties of composite materials were investigated in wide frequency ranges from 1 MHz to 1 GHz.

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Preparation and characterization of poly(vinyl alcohol)‐modified red mud composite materials

Cited by 20 publications

References 24 publications

Novel clay‐based nanobiocomposites of biopolyesters with synergistic barrier to UV light, gas, and vapour

Novel clay‐based nanobiocomposites of biopolyesters with synergistic barrier to UV light, gas, and vapour

Thermoplastic Polymer based Modified Red Mud Composites Materials

Dielectric and Material Properties of Poly (Vinyl Alcohol): Based Modified Red Mud Polymer Nanocomposites

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