Injection Moulded Biocomposites from Oat Hull and Polypropylene/Polylactide Blend: Fabrication and Performance Evaluation

Reddy, Jeevan Prasad; Misra, Manjusri; Mohanty, Amar K.

doi:10.1155/2013/761840

Cited by 16 publications

(22 citation statements)

References 19 publications

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“…The explanation of the different trends found for our blends is twofold: PLA is present in the Liquid Wood mixture as shown by the thermal and microscopic characterization reported above; MAPP and lignin itself can interact to enhance the interfacial adhesion of the blends components. As reported by Reddy et al [28] and Choudhary et al [29], PP/PLA blends can show enhanced mechanical properties, despite the incompatibility of the pure polymers, when proper compatibilizers, like MAPP, are used. The ester groups of PLA can interact with lignin, and the anhydride groups of MAPP can react with cellulose.…”

Section: Resultsmentioning

confidence: 74%

Thermal characterization of a series of lignin-based polypropylene blends

Blanco

Cicala

Latteri

et al. 2016

J Therm Anal Calorim

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Polypropylene (PP), due to its chemical stability, is considered one of the main responsible of the increasing amount of plastic wastes on earth. To overcome this problem and to reduce the dependence of oil feedstocks, the use of lignocellulosics as fillers or reinforcements in thermoplastic materials has been increasing enormously in the last decades. In the present work, Liquid Wood (a mixture of cellulose, hemp, fax and lignin) was used to prepare, by mechanical mixing followed by thermal extrusion, blends of various PP/Liquid Wood ratios. Differential scanning calorimetry and thermogravimetric analysis experiments were performed in order to verify whether and how much the composition of the blends affects the thermal properties of the obtained compounds. Both calorimetric and thermogravimetric results indicate that the application of PP as a matrix does not limit the processing temperature of Liquid Wood, which may lead to a perfect marketable composite from these components. The addition of Liquid Wood also resulted in enhanced mechanical properties for the PP/Liquid Wood blends.

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Section: Resultsmentioning

confidence: 74%

Thermal characterization of a series of lignin-based polypropylene blends

Blanco

Cicala

Latteri

et al. 2016

J Therm Anal Calorim

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“…Oat hull fi bre-reinforced polypropylene/polylactic acid (9:1) composites were successfully manufactured by means of a melt processing method (Reddy et al ., 2013 ). TGA of the oat hull fi bres clearly showed that the processing temperature of 190°C was acceptable.…”

Section: Oat Fl Our Compositesmentioning

confidence: 99%

“…HDT of the oat fi bre-reinforced PP/PLA composites improved by 43% over that for the PP/PLA blend. Composites with 30 wt% oat hull loading showed improved storage moduli for both uncompatibilized and compatibilized systems (Reddy et al ., 2013 ). The effects of the addition of compatibilizers (SEBS-g-MA, PS-co -MA, PEG) on the thermal, microstructural and morphological characteristics were examined for PS composites containing cellulose and oat (Pacella et al ., 2011 ).…”

Section: Oat Fl Our Compositesmentioning

confidence: 99%

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The use of maize, oat, barley and rye fibres as reinforcements in composites

Mamun

Heim

Błędzki

2015

Biofiber Reinforcements in Composite Materials

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“…due to its low cost and excellent physical, mechanical, and thermal properties [1,2]. But, after their usage period, it is carelessly discarded in open dumps, landfills, or as simple litter.…”

Section: Introductionmentioning

confidence: 99%

Physico-mechanical characterization and biodegradability behavior of polypropylene/poly(L-lactide) polymer blends

Jain

Madhu

Bhunia

et al. 2014

Journal of Polymer Engineering

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Partially biodegradable polymer films from the blends of polypropylene (PP) and poly(L-lactide) (PLLA) were prepared in an internal mixer by melt blending technique, with and without compatibilizer, maleic anhydride grafted polypropylene (MAPP), followed by compression molding. With regard to tensile properties, 80/20 (PP/ PLLA) and 80/20/6 (PP/PLLA/MAPP) were found as the optimum blends with best combination of the ingredients. Therefore, the blend samples, namely, PP80 (80% PP+20% PLLA) and PP80C6 (80% PP+20% PLLA+6 phr MAPP) were selected as 'optimized' blends and further characterized for their physical, chemical, morphological, and thermal properties. X-ray diffraction studies showed that neat PP and PP80C6 had the same crystallite size indicating compatibility between PP and PLLA due to MAPP. Fourier transform infrared spectroscopy and scanning electron microsopy investigations revealed that the two polymers were completely immiscible in absence of the compatibilizer. Bacterial biodegradation of the samples was performed by exposure to Pseudomonas stutzeri for 60 days and measured in terms of weight loss, optical density, and thermal stability of the samples before and after degradation. The results showed that 80/20 (PP/ PLLA) blends undergo considerable degradation. Reduction in thermal stability of the film samples was also observed through thermogravimetric analysis, which was useful in accelerating their biodegradation.

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Injection Moulded Biocomposites from Oat Hull and Polypropylene/Polylactide Blend: Fabrication and Performance Evaluation

Cited by 16 publications

References 19 publications

Thermal characterization of a series of lignin-based polypropylene blends

Thermal characterization of a series of lignin-based polypropylene blends

The use of maize, oat, barley and rye fibres as reinforcements in composites

Physico-mechanical characterization and biodegradability behavior of polypropylene/poly(L-lactide) polymer blends

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