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Morphological, Rheological and Mechanical Properties of Pla-Typha Based Biocomposites

Open Journal of Composite Materials 2021年第4期11卷 111-122页

作者： Babacar Niang nicola schiavone Haroutioun Askanian Diène Ndiaye Vincent Verney Section de Physique Appliquée Unité de Formation et de Recherche de Sciences Appliquées et de Technologies Université Gaston Berger Saint-Louis Sénégal Université Clermont Auvergne Centre National de la Recherche Scientifique SIGMA Clermont Institut de Chimie de Clermont Ferrand Clermont-Ferrand France

Due to the demand from society for the consumption of ecological polymeric materials, one of the polymers that have satisfied this request is the poly (lactic acid) (PLA). This polymer is derived from renewable resources, it is recyclable and biodegradable. It presents a good understanding between the promising properties and the cost. However, a route to increase the mechanical properties and reduce the cost of PLA is the elaboration of PLA based biocomposites by using fillers from natural waste. In this work, The effect of Typha content on the morphological, rheological, thermal and mechanical properties of PLA matrix was studied. Four formulations were produced with different mass concentrations. The results showed an increase in the viscoelastic properties, as a function of the Typha stem powder concentration. The DSC analysis showed an increase in the crystallinity rate of the various composites confirming the nucleating effect provided by the filler. TGA analysis indicated a decrease in the decomposition temperature of the composites. Mechanical tensile tests have shown a significant improvement in the mechanical properties mainly for the samples containing 45% (w/w) of Typha powder.

关键词： Wood Polymer Composites Polylactic Acid Rheology SEM

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Study of the Thermal, Rheological, Morphological and Mechanical Properties of Biocomposites Based on Rod-Of Typha/HDPE Made up of Typha Stem and HDPE

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Advances in Materials Physics and Chemistry 2018年第9期8卷 340-357页

作者： Babacar Niang El Hadj Babacar Ly Abdou Karim Diallo nicola schiavone Haroutioun Askanian Vincent Verney Ansou Malang Badji Mahmoud Kalid Diakite Diéne Ndiaye Section Physique Appliquée Unité de Formation et de Recherche de Sciences Appliquées et de Technologies Université Gaston Berger Saint Louis Sénégal Institut de Chimie de Clermont-Ferrand Université Blaise Pascal Clermont-Ferrand France CNRS UMR 6296 ICCF Université Blaise Pascal Aubière France

The thermal, rheological and morphological properties of composite biomaterials made with mixture of high density polyethylene and typha rod powder (RD) were evaluated. The dynamic mechanical behavior of the samples was studied with 25%, 35% and 45% typha stem powder concentrations. The viscoelastic properties are mainly related to the nature of the polymer and the typha stem powder. Storage (G') and loss (G') moduli increased significantly, depending on the amount of powder in the molten mixture. After a viscosity increase was noticed in low frequency, it decreased in high frequencies, which demonstrates the pseudo-plasticity effect. Morphological and thermal characterization results have shown the dispersion state of the powder and its ability to modify the kinetics crystallization of biocomposites.

关键词： Biocomposite Thermal Rheological Morphological Mechanical Properties

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