Dielectric, Electrical Conductivity, and Thermal Stability Studies of Cellulosic Fibers Reinforced Polylactic Acid Composites

ABSTRACT In this study, biodegradable polylactic acid (PLA) composites were reinforced with three different natural fibers, were bamboo (BF), sugarcane (SF), and banana pseudostem (BPF) fibers, and prepared at different loadings (10, 20, and 30 wt.%). The solvent casting particulate leaching method was implemented to produce porous composites, and salt was used as the particulate material. The dielectric properties of the PLA/BF, PLA/SF, and PLA/BF composites were studied for different loadings of cellulosic fibers. The composites were observed using scanning electron microscopy (SEM), and the PLA composites with 30 wt.% filler content were analyzed using Fourier transform infrared (FTIR) and thermogravimetric analysis (TGA). According to the dielectric tests, all PLA/BF, PLA/SF, and PLA/BPF composites have low dielectric constants and dielectric loss. The PLA/BF composites exhibited the highest dielectric constant, dielectric loss, and electrical conductivity, followed by the PLA/BF and PLA/SF composites. The morphology of the composites showed their porous structure. The FTIR spectra showed the main constituents presented in the composites, and the PLA/BF showed higher thermal stability than the other composites.

[1]  T. Huber,et al.  Biocomposites: A Review of Materials and Perception , 2022, Materials Today Communications.

[2]  Fanan Wang,et al.  Preparation and Characterization of Regenerated Cellulose Membrane Blended with ZrO2 Nanoparticles , 2021, Membranes.

[3]  P. Campelo,et al.  Semiconducting nanocomposite based on the incorporation of polyaniline on the cellulose extracted from Bambusa vulgaris: structural, thermal and electrical properties , 2021, Chemical Papers.

[4]  Chi‐Chang Lin,et al.  Production, Optimization and Characterization of Polylactic Acid Microparticles Using Electrospray with Porous Structure , 2021, Applied Sciences.

[5]  B. Dewancker,et al.  A Calculation Approach of Embodied Energy, Carbon Emission and Eco-Costs on Waste Recycled Composite Materials , 2021 .

[6]  A. Kiliç,et al.  Development and characterization of hybrid composites from sustainable green materials , 2020 .

[7]  S. Ray,et al.  Shear-Induced Carbon Nanotube Migration and Morphological Development in Polylactide/Poly(vinylidene fluoride) Blend Nanocomposites and Their Impact on Dielectric Constants and Rheological Properties , 2020 .

[8]  K. Matori,et al.  Biodegradable Poly (lactic acid)/Poly (ethylene glycol) Reinforced Multi-Walled Carbon Nanotube Nanocomposite Fabrication, Characterization, Properties, and Applications , 2020, Polymers.

[9]  A. M. Deliormanlı,et al.  Effect of pore architecture on the mesenchymal stem cell responses to graphene/polycaprolactone scaffolds prepared by solvent casting and robocasting , 2020, Journal of Porous Materials.

[10]  D. Grewell,et al.  Hybrid Cellulose-Glass Fiber Composites for Automotive Applications , 2019, Materials.

[11]  G. Nath,et al.  Study on thermo-acoustic insulating property of biocomposite , 2019 .

[12]  A. Kumaravel,et al.  Isolation and characterization of cellulose fibers from Thespesia populnea barks: A study on physicochemical and structural properties. , 2019, International journal of biological macromolecules.

[13]  M. Jawaid,et al.  Evaluation of Mechanical and Physical Properties of Hybrid Composites from Food Packaging and Textiles Wastes , 2019, Journal of Polymers and the Environment.

[14]  M. Pecht,et al.  Characterization of encapsulant properties , 2019, Encapsulation Technologies for Electronic Applications.

[15]  A. Salama,et al.  Electrical conductivity and dielectric properties of nanofibrillated cellulose thin films from bagasse , 2018 .

[16]  Sen-Yue Yang,et al.  Electrical response of novel carbon nanotubes embedded and carbon fiber Z‐axis reinforced jute/epoxy laminated composites , 2018, Polymer Composites.

[17]  M. Jawaid,et al.  Influence of treatments on the dielectric properties of sugar palm fiber reinforced phenolic composites , 2018, Journal of Molecular Liquids.

[18]  M. Azeez,et al.  Bamboo, Its Chemical Modification and Products , 2018, Bamboo - Current and Future Prospects.

[19]  A. Demir,et al.  Matrix impact on the mechanical, thermal and electrical properties of microfluidized nanofibrillated cellulose composites , 2017 .

[20]  G. Ganesan,et al.  Banana/sisal fibers reinforced poly(lactic acid) hybrid biocomposites; influence of chemical modification of bsf towards thermal properties , 2017 .

[21]  U. Sundararaj,et al.  Effects of synthesis catalyst and temperature on broadband dielectric properties of nitrogen-doped carbon nanotube/polyvinylidene fluoride nanocomposites , 2016 .

[22]  V. Agarwal,et al.  Banana fiber reinforced low-density polyethylene composites: effect of chemical treatment and compatibilizer addition , 2016, Iranian Polymer Journal.

[23]  Rezaur Rahman,et al.  Comparative Study of Dielectric Properties of Hybrid Natural Fiber Composites , 2014 .

[24]  L. Famá,et al.  Covalent grafting of carbon nanotubes to PLA in order to improve compatibility , 2013 .

[25]  S. Chaudhari,et al.  Dielectric behavior and A. C. Conductivity in Cu-Ti Ferrites , 2012 .

[26]  Jie Ren,et al.  Biodegradable Poly(Lactic Acid): Synthesis, Modification, Processing and Applications , 2011 .

[27]  J. O. Aguilar,et al.  Influence of carbon nanotube clustering on the electrical conductivity of polymer composite films , 2010 .

[28]  Lin Li,et al.  Correlation between dispersion state and electrical conductivity of MWCNTs/PP composites prepared by melt blending , 2010 .

[29]  G. Unnikrishnan,et al.  Dielectric properties of short sisal/coir hybrid fibre reinforced natural rubber composites , 2007 .