High strength bio-composite films of poly(vinyl alcohol) reinforced with chemically modified-fly ash

Nath, Dilip Chandra Deb; Bandyopadhyay, Sri; Yu, Aibing; Blackburn, Darryl; White, Chris

doi:10.1007/s10853-009-4091-6

Cited by 37 publications

(27 citation statements)

References 34 publications

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“…FA is being considered for use in composites with metals [6] and polymers. Polymers, in which FA has been used as filler include polyester [7,8], epoxy [9], polypropylene [4,10,11], poly(vinyl alcohol) [3,12,13] and polyethylene [2,14].…”

Section: Introductionmentioning

confidence: 99%

Extruded poly(ethylene-co-octene)/fly ash composites – value added products from an environmental pollutant

et al. 2012

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Fly ash (FA) is a by-product generated during combustion of coal and has caused serious environmental concerns. In an effort to utilize FA beneficially, we developed composites from an ethylene-octene random copolymer (EOC) and unmodified as well as surfacemodified class-F fly ash (MFA) by twin screw extrusion. Addition of 20 wt% of MFA to EOC improves its tensile strength by 150%; also, MFA improves stress at 100% and 300% strains (M100 and M300) of EOC. Thermal stability of EOC matrix is appreciably improved by the addition of either FA or MFA, while the melting behavior is not appreciably influenced by either. Fractography study reveals an improved adhesion between the EOC and MFA particles up to a filler loading of 20%, beyond which the adhesion between EOC and MFA is weakened causing a reduction in mechanical properties. The 'flammable' nature of EOC changes to 'self extinguishing' on addition of even 10 wt% of FA or MFA, as found out from LOI study.

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Section: Introductionmentioning

confidence: 99%

Extruded poly(ethylene-co-octene)/fly ash composites – value added products from an environmental pollutant

et al. 2012

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“…The microscopic intimate contact areas were visualized in the SEM image of the fractured-surface film in the tensile tests [10]. The interfacial interaction was thus established as a crucial factor for enhancing the mechanical strength and formation of catalytic active sites for the growth of carbonaceous solid residue on FA surfaces.…”

Section: Resultsmentioning

confidence: 99%

“…The petri dishes were kept at room temperature until completely dry. The films were peeled out and dried in an oven at 60˚C under vacuum for 6 h. The thickness of the films was 50 µm -70 µm [10].…”

Section: Materials and Preparation Of Composite Filmsmentioning

confidence: 99%

“…FA is commonly processed by disposal as landfill in dams and lagoons. It typically consists of crystalline aluminosilicate, mullite and α-quartz (~96.5%) spherical particles between 1 μm ~ 100 μm in diameter, along with traces of metal oxides (~3.5%) (iron, calcium, magnesium, potassium, sodium, titanium), depending on the processing condition and the chemical composition of the coal burned [10].…”

Section: Introductionmentioning

confidence: 99%

“…Successful results have been achieved in the use of FA of different researchers are in agriculture and soil management, the production of polymer composites [10] cement and concrete [12], metal composites [13] as catalytic support for hydrogen production, steam methane reforming [9] and iron-nitrate-impregnated support for the synthesis of multi-walled CNTs (MWCNTs) [11].…”

Section: Introductionmentioning

confidence: 99%

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Analysis of Carbon Nanotubes Produced by Pyrolysis of Composite Film of Poly (Vinyl Alcohol) and Modified Fly Ash

Nath¹,

Sahajwalla²

2012

MSA

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We determined the catalytic function of chemically modified fly ash (MFA) for the growth of carbon nanotube (CNT) ropes with ~54% yield by the pyrolysis of the composite film of poly (vinyl alcohol) (PVA) at 500˚C for 10 min under 2 L/min flow of nitrogen. Fly ash was treated with 2M sodium hydroxide to have MFA and used with PVA to fabricate the composite film by aqua casting. CNT was analyzed using SEM, TEM, XPS and Raman spectroscopy. The growths of CNT on MFA surfaces were visualized with different geometric self-assembly, e.g., bundles of CNT in ropes, twisted ropes, Y-branch ropes and staked-cone sheet. Thus, the mixtures of CNT ropes and MFA are a potential filler material for fabricating composites with polymer and metal.

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Stearic acid as coupling agent in fly ash reinforced recycled polypropylene matrix composites: Structural, mechanical, and thermal characterizations

Sengupta

Maity

Ray

et al. 2013

J of Applied Polymer Sci

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Two industrial wastes, fly ash (FA) and recycled polypropylene (RPP) were used to prepare a value‐added, sustainable, low cost composite material. Improving the interfacial interaction between the hydrophobic RPP matrix and the hydrophilic FA particles is important to get a good combination of properties. In order to tailor the interface, stearic acid was used as the coupling agent. The FA particles were coated with a saturated fatty acid, stearic acid (SA), in different weight % like 1, 2, 3, and 5. The SA coated fly ash particles were incorporated as filler in RPP matrix composites by melt mixing in 1 : 1 weight ratio. The composites were tested for their flexural properties, impact behavior, dynamic mechanical properties, fracture surface analysis, X‐ray diffraction (XRD) study, and differential scanning calorimetry (DSC). An increase in flexural modulus and impact strength was observed in the stearic acid coated FA/RPP composites. In 1 wt % SA treated FA/RPP (RFASA1) composites, a significant increase in glass transition temperature was observed along with an increase in crystallinity. A green, renewable, inexpensive chemical like stearic acid was thus found to be an effective coupling agent in fabrication of a composite with 50 wt % filler loading. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 130: 1996–2004, 2013

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High strength bio-composite films of poly(vinyl alcohol) reinforced with chemically modified-fly ash

Cited by 37 publications

References 34 publications

Extruded poly(ethylene-co-octene)/fly ash composites – value added products from an environmental pollutant

Extruded poly(ethylene-co-octene)/fly ash composites – value added products from an environmental pollutant

Analysis of Carbon Nanotubes Produced by Pyrolysis of Composite Film of Poly (Vinyl Alcohol) and Modified Fly Ash

Stearic acid as coupling agent in fly ash reinforced recycled polypropylene matrix composites: Structural, mechanical, and thermal characterizations

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