Effect of Boehmite Alumina Nanofiller Incorporation on the Morphology and Thermal Properties of Functionalized Poly(propylene)/Polyamide 12 Blends

Ogunniran, Elijah Soba; Sadiku, Rotimi; Ray, Suprakas Sinha; Luruli, Nyambeni

doi:10.1002/mame.201100148

Cited by 17 publications

(19 citation statements)

References 34 publications

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“…BA has recently become the subject of research attention as a new type of additive for enhancing the mechanical, thermal and fire-retardant performances of polymers [21][22][23][24][25]. In order to get a deeper understanding on the structure-property relationships, two BA grades with different primary particle size were incorporated in both low density and high density polyethylenes (LDPE and HDPE, respectively) by melt compounding.…”

Section: Introductionmentioning

confidence: 99%

Thermal, viscoelastic and mechanical behavior of polypropylene with synthetic boehmite alumina nanoparticles

Pedrazzoli¹,

Khumalo²,

Karger‐Kocsis³

et al. 2014

Polymer Testing

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Effects of nanofiller concentration and surface treatments on the morphology, thermal, viscoelastic and mechanical behaviors of polypropylene copolymer (PP)/boehmite alumina (BA) nanocomposites were investigated. Both untreated and treated BA particles with octylsilane (OS) and with sulphonic acid compound (OS2) were added up to 10 wt% to produce nanocomposites by melt mixing followed by film blow molding and hot pressing. Dispersion of BA was studied by scanning electron microscopy. Differential scanning calorimetry and wide-angle X-ray scattering were adopted to detect changes in the crystalline structure of PP. Thermooxidative degradation of the nanocomposites was assessed by thermogravimetrical analysis. Dynamic mechanical analysis served for studying the viscoelastic, whereas quasi-static tensile, creep and Elmendorf tear tests were used to detect changes in the mechanical performance. BA nanoparticles were finely dispersed in PP up to 10 wt%, even when they were not surface modified. The resistance to thermal degradation was markedly improved by BA nanomodification. Changes observed in the mechanical properties were attributed to BA dispersion, filler/matrix interactions and related effects because the crystalline characteristics of the PP matrix practically did not change with BA modification.

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Section: Introductionmentioning

confidence: 99%

Thermal, viscoelastic and mechanical behavior of polypropylene with synthetic boehmite alumina nanoparticles

Pedrazzoli¹,

Khumalo²,

Karger‐Kocsis³

et al. 2014

Polymer Testing

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“…An important role is played by such inorganic nanofillers, which can be usually dispersed at nanometric level without the addition of compatibilizers. Metal oxides, such as ZnO, MgO2, Al2O, etc., in their nanocrystalline forms, have been found to have unique properties when compared to their respective microcrystalline form (Ogunniran et al, 2012). Among inorganic nanofillers, boehmite alumina (BA), with chemical formula n-AlO(OH), represents an ideal candidate because of its economic and relative easy production process (Özdilek et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Mechanical and rheological response of polypropylene/boehmite nanocomposites

Pedrazzoli

Tuba

Khumalo

et al. 2013

Journal of Reinforced Plastics and Composites

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In this work the influence of synthetic boehmite alumina (BA) nanoparticles with various surface treatments on the morphology, crystallization behavior and mechanical properties of polypropylene copolymer (PP) nanocomposites was studied. In particular, a series of PP/BA nanocomposites, containing up to 10 wt% of untreated and of octylsilane-functionalized BA nanoparticles, were prepared by melt compounding and film blowing. A third type of composites was produced by incorporation of BA nanoparticles treated with benzene-sulfonic-acid.Scanning electron microscopy indicated that BA nanoparticles were finely and uniformly dispersed, though agglomerated, in the PP nanocomposites. Surface treated BA nanoparticles were better dispersed in the matrix than the untreated BA nanocomposites. The melt viscosity of nanocomposites remained unaltered or decreased by nanofiller incorporation at low contents (2.5 and 5 wt%), while it slightly increased at higher contents (10 wt%).Uniaxial tensile tests indicated that the nanoparticles can induce a remarkable stiffening effect even at a rather low filler content, especially in the case of surface treated particles. The plane stress fracture toughness of the material, evaluated by the essential work of fracture approach, showed a noticeable improvement due to BA incorporation, with an optimal effect for a filler concentration of about 2.5 wt%.4

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“…Similar studies related the observations to an effective nucleation and homogeneous dispersion of BA, but no peak shifts were noted. 26,29,34 In the current study, there is a slight decrease in the onset of melting temperature and a shift of cold crystallization peak (see arrow) to lower temperatures in the presence of BA. These results may be attributed to a more favourable interaction between dispersed PLA phase and the BA nanoparticles as discussed under morphological observations which favoured a decrease in crystallite sizes.…”

Section: Differential Scanning Calorimetrymentioning

confidence: 84%

The effect of boehmite alumina nanoparticles on the properties of polylactide/polypropylene blend composites

Hato

Motaung

Motloung

et al. 2016

Journal of Reinforced Plastics and Composites

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The effect of boehmite alumina nanofiller on properties of polylactide/polypropylene blend compatibilized with 3% maleic anhydride grafted polypropylene was investigated. Boehmite alumina nanoparticles were finely dispersed in polylactide/ polypropylene/boehmite alumina blend up to 7 wt.% to form blend nanocomposites which were prepared by twin-screw melt compounding. The morphology, thermal, mechanical, heat distortion temperature, thermomechanical and degradation characteristics were investigated. Scanning electron microscopy indicated a tubular morphology with increasing boehmite alumina in the blend matrix particularly at 5 and 7 wt.% of boehmite alumina loadings with few agglomerates. Transmission electron microscopy indicated a highly dispersed boehmite alumina in the blend nanocomposites. Boehmite alumina nanoparticles significantly influenced the thermal properties and a nucleation of the blend matrix. A significant improvement in the tensile modulus and tensile strength upon addition of boehmite alumina in the blend nanocomposites was obtained. However, beyond 3 wt.% of boehmite alumina addition, there was a clear deterioration in mechanical properties.

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Effect of Boehmite Alumina Nanofiller Incorporation on the Morphology and Thermal Properties of Functionalized Poly(propylene)/Polyamide 12 Blends

Cited by 17 publications

References 34 publications

Thermal, viscoelastic and mechanical behavior of polypropylene with synthetic boehmite alumina nanoparticles

Thermal, viscoelastic and mechanical behavior of polypropylene with synthetic boehmite alumina nanoparticles

Mechanical and rheological response of polypropylene/boehmite nanocomposites

The effect of boehmite alumina nanoparticles on the properties of polylactide/polypropylene blend composites

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