Mechanical and thermal properties of wood fibers reinforced poly(lactic acid)/thermoplasticized starch composites

Raghu, N.; Kale, Amey; Raj, Anand; Aggarwal, Pankaj; Chauhan, Shakti

doi:10.1002/app.46118

Cited by 15 publications

(1 citation statement)

References 38 publications

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“…The lowest damping of the PLA-Woodfill_f and PLA-Woodfill_3D samples can also be attributed to a significantly higher portion of wood fibres. The damping of polymers is much greater than the damping of natural fibres [35].…”

Section: Dynamic Mechanical Analysis (Dma) Of Filaments and 3d Samplesmentioning

confidence: 97%

Colour Fastness to Various Agents and Dynamic Mechanical Characteristics of Biocomposite Filaments and 3D Printed Samples

et al. 2021

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The aim of the study was to analyse the colour fastness of 3D printed samples that could be used as decorative or household items. Such items are often fabricated with 3D printing. The colour of filaments affects not only the mechanical properties, but also the appearance and user satisfaction. Samples of biocomposite filaments (PLA and PLA with added wood and hemp fibres) were used. First, the morphological properties of the filaments and 3D printed samples were analysed and then, the colour fastness against different agents was tested (water, oil, detergent, light and elevated temperature). Finally, the dynamic mechanical properties of the filaments and 3D printed samples were determined. The differences in the morphology of the filaments and 3D printed samples were identified with SEM analysis. The most obvious differences were observed in the samples with wood fibres. All printed samples showed good resistance to water and detergents, but poorer resistance to oil. The sample printed with filaments with added wood fibres showed the lowest colour fastness against light and elevated temperatures. Compared to the filaments, the glass transition of the printed samples increased, while their stiffness decreased significantly. The lowest elasticity was observed in the samples with wood fibres. The filaments to which hemp fibres were added showed the reinforcement effect. Without the influence on their elasticity, the printed samples can be safely used between 60 and 65 °C.

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Section: Dynamic Mechanical Analysis (Dma) Of Filaments and 3d Samplesmentioning

confidence: 97%

Colour Fastness to Various Agents and Dynamic Mechanical Characteristics of Biocomposite Filaments and 3D Printed Samples

et al. 2021

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Preparation and analysis of poly(l‐lactic acid) composites with oligo(d‐lactic acid)‐grafted cellulose

Rahaman

Rana

Gafur

et al. 2019

J of Applied Polymer Sci

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α‐Cellulose extracted from jute fiber was grafted with oligo( d‐lactic acid) (ODLA) via a graft polycondensation reaction in the presence of para‐toluene sulfonic acid and potassium persulfate in toluene at 130 °C for 9 h under 380 mmHg. ODLA was synthesized by the ring‐opening polymerization of d‐lactides in the presence of stannous octoate (0.03 wt % lactide) and d‐lactic acid at 140 °C for 10 h. Composites of poly( l‐lactic acid) (PLLA) with the ODLA‐grafted α‐cellulose were prepared by the solution‐mixing and film‐casting methods. The grafting of ODLA onto α‐cellulose was confirmed by Fourier transform infrared (FTIR) spectroscopy and scanning electron microscopy (SEM). The analysis of the composites was performed with FTIR spectroscopy, SEM, wide‐angle X‐ray diffraction, and thermogravimetric analysis. The distribution of the grafted α‐cellulose in the composites was uniform and showed better compatibility with PLLA through intermolecular hydrogen bonding. Only homocrystalline structures of PLLA were present in the composites, and the thermal stability increased with increasing percentage of grafted α‐cellulose. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47424.

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Thermal decomposition behavior of 3D printing filaments made of wood‐filled polylactic acid/starch blend

Sun

Lee

Wang

et al. 2020

J of Applied Polymer Sci

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Dynamic thermogravimetric analysis under nitrogen environment was used to understand the thermal decomposition process of 3D printing filaments made of wood-filled polylactic acid (PLA)/starch blend. The characteristic temperatures and apparent activation energy (AAE) of the filaments with various starch contents were calculated with well-known kinetic models by Friedman, Flynn-Wall-Ozawa, Coats-Redfern, and Kissinger. With the increased starch content in the filament, the onset thermal decomposition

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Mechanical and thermal properties of wood fibers reinforced poly(lactic acid)/thermoplasticized starch composites

Cited by 15 publications

References 38 publications

Colour Fastness to Various Agents and Dynamic Mechanical Characteristics of Biocomposite Filaments and 3D Printed Samples

Colour Fastness to Various Agents and Dynamic Mechanical Characteristics of Biocomposite Filaments and 3D Printed Samples

Preparation and analysis of poly(l‐lactic acid) composites with oligo(d‐lactic acid)‐grafted cellulose

Thermal decomposition behavior of 3D printing filaments made of wood‐filled polylactic acid/starch blend

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