Mechanical, Thermal, and Fire Properties of Biodegradable Polylactide/Boehmite Alumina Composites

Das, Kaberi; Ray, Suprakas Sinha; Chapple, Steve; Wesley-Smith, James

doi:10.1021/ie4004305

Cited by 42 publications

(38 citation statements)

References 26 publications

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“…Although metallic particles like Boehmite Alumina are expected to improve the thermal properties of polymers, the thermal stability of polylactide matrix showed no improvement when impregnated with boehemite alumina particles in spite of the particles being well dispersed at lower loadings of boehmite alumina (Das et al 2013).…”

Section: Introductionmentioning

confidence: 99%

An Experimental Study on the Thermal Properties and Electrical Properties of Polylactide Doped with Nano Aluminium Oxide and Nano Cupric Oxide

Mujeeb

Lobo²,

Antony

et al. 2017

INAE Lett

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The research on polylactide has been trending over the past 10 years as it is a versatile biopolymer which finds applications in food packaging and medical industries. In this research, nano aluminium oxide and nano cupric oxide have been impregnated into polylactide matrix using sonication and the nano composite thin films were prepared using solution casting technique. The thermal characterization of the neat and doped polymer films were conducted using thermogravimetric analysis and differential scanning calorimetry. the addition of nano aluminium oxide and nano cupric oxide increased the glass transition temperature and melting temperature of the samples in comparison with neat polylactide. Degree of crystallinity of all the doped samples increased with respect to the neat sample except for the sample doped with 1 mg nano aluminium oxide. The I-V characterization of the neat and doped samples revealed that addition of the nano powders reduced the resistivity of PLA by 35-45%. These results recommend the use of polylactide doped with nano aluminium oxide and nano cupric oxide as a potential semiconducting polymeric materials.

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Section: Introductionmentioning

confidence: 99%

An Experimental Study on the Thermal Properties and Electrical Properties of Polylactide Doped with Nano Aluminium Oxide and Nano Cupric Oxide

Mujeeb

Lobo²,

Antony

et al. 2017

INAE Lett

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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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“…The structure of NH 4 Al 3 (SO 4 ) 2 (OH) 6 may consist of sheets of AlO 2 (OH) 4 octahedra decorated by sulfate tetrahedra, and the NH 4 + are located between them [33]. Due to this structure, the NH 4 Al 3 (SO 4 ) 2 (OH) 6 crystal was unstable and prefer to decompose and transform into γ -AlOOH crystal phase in the hydrothermal process. However, when the urea/Al 3+ molar ratio of initial solution was increased to 4:1, the high concentration of NH 4 + would strongly restrain the formation of boehmite phase and the final sample was NH 4 Al 3 (SO 4 ) 2 (OH) 6 with hexagonal structure.…”

Section: Effect Of Urea/al 3+ Molar Ratio On the As-synthesized Samplesmentioning

confidence: 99%

“…Alumina (especially the γ form) has been widely used in advanced ceramics [2], adsorbents [3], catalysis [4], catalysts support [5], fillers [6] and dielectric microelectronics [7] as well as nanoporous membranes [8,9]. Boehmite (γ -AlOOH) is commonly used to prepare γ -Al 2 O 3 [10,11] and its crystal structure has been studied in detail earlier.…”

Section: Introductionmentioning

confidence: 99%

Effects of Urea/Al³⁺Ratios and Hydrothermal Treated Time on the Formation of Self-Assembled Boehmite Hollow Sphere

et al. 2014

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Using Al 2 (SO 4 ) 3 and urea [CO (NH 2 ) 2 ] as the starting materials, the self-assembled boehmite (γ -AlOOH) sphere with hollow structure was successfully synthesized by hydrothermal process. The effects of urea/Al 3+ molar ratios and hydrothermal treated time on the crystal structure, morphology and specific surface area were investigated in detail. It showed that the boehmite (γ -AlOOH) formed when the urea/Al 3+ molar ratio was 1:1, 2:1 and 3:1 hydrothermally treated at 180 • C for 24 h. The synthesized particles formed a hollow sphere structure with nano-flakelets surface and had the large specific area of 208 m 2 g −1 and high pore volume of 1.23cm 3 g −1 respectively.

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Mechanical, Thermal, and Fire Properties of Biodegradable Polylactide/Boehmite Alumina Composites

Cited by 42 publications

References 26 publications

An Experimental Study on the Thermal Properties and Electrical Properties of Polylactide Doped with Nano Aluminium Oxide and Nano Cupric Oxide

An Experimental Study on the Thermal Properties and Electrical Properties of Polylactide Doped with Nano Aluminium Oxide and Nano Cupric Oxide

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

Effects of Urea/Al³⁺Ratios and Hydrothermal Treated Time on the Formation of Self-Assembled Boehmite Hollow Sphere

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Mechanical, Thermal, and Fire Properties of Biodegradable Polylactide/Boehmite Alumina Composites

Cited by 42 publications

References 26 publications

An Experimental Study on the Thermal Properties and Electrical Properties of Polylactide Doped with Nano Aluminium Oxide and Nano Cupric Oxide

An Experimental Study on the Thermal Properties and Electrical Properties of Polylactide Doped with Nano Aluminium Oxide and Nano Cupric Oxide

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

Effects of Urea/Al3+Ratios and Hydrothermal Treated Time on the Formation of Self-Assembled Boehmite Hollow Sphere

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Effects of Urea/Al³⁺Ratios and Hydrothermal Treated Time on the Formation of Self-Assembled Boehmite Hollow Sphere