Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Thermal, Spectroscopy, and Mechanical Properties of Biodegradable Polymers and Reinforcements: A Green Approach

Version 1 : Received: 16 November 2023 / Approved: 17 November 2023 / Online: 17 November 2023 (12:37:27 CET)
Version 2 : Received: 17 November 2023 / Approved: 20 November 2023 / Online: 20 November 2023 (14:01:39 CET)

How to cite: Melo dos Santos, J.J.; Sabino da, E.B.; Paskocimasa, C.A. Thermal, Spectroscopy, and Mechanical Properties of Biodegradable Polymers and Reinforcements: A Green Approach. Preprints 2023, 2023111154. https://doi.org/10.20944/preprints202311.1154.v1 Melo dos Santos, J.J.; Sabino da, E.B.; Paskocimasa, C.A. Thermal, Spectroscopy, and Mechanical Properties of Biodegradable Polymers and Reinforcements: A Green Approach. Preprints 2023, 2023111154. https://doi.org/10.20944/preprints202311.1154.v1

Abstract

Biocomposite membranes based on polylactic acid (PLA) and cellulose nanocrystals (CNCs) were developed using a scientific approach. Dicumyl peroxide (DCP) was used as a polymerization ini-tiator, while tin octoate (Sn(Oct)2) and triphenylphosphane (P(C6H5)3) were used as catalysts. A torque rheometer was used to mix the components of the biocomposite, and thin films was prepared by solvent casting. Fourier transform infrared (FTIR) spectroscopy confirmed the coupling between the PLA and CNCs. Field emission scanning electron microscopy (FESEM) showed that the CNCs were well-dispersed in the PLA matrix with an unimodal particle size distribution and a maximum particle size of around 200 nm. Thermogravimetric analysis (TGA) and differential scanning calo-rimetry (DSC) analysis demonstrated good thermal stability and improved biodegradability of the biocomposite membrane compared to pure PLA. Mechanical characterization showed a Young's modulus of 1.65 GPa, which is comparable to that of other composite materials, and a maximum tensile strength of 20.31 MPa, which is higher than that of pure PLA. These results suggest that the developed biocomposite membrane has potential applications in water filtration, food packaging, and biomedical devices.

Keywords

Nanocellulose; Biodegradability; Sustainability; Additive manufacturing; Functional materials.

Subject

Chemistry and Materials Science, Nanotechnology

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