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<p>This study focused on extracting cellulose from corn cobs to create biodegradable plastics enhanced with titanium dioxide (TiO₂) nanoparticles. Cellulose was obtained through various processes, including grinding, alkalization, bleaching, washing, and drying. TiO₂ nanoparticles were synthesized using the Sol–gel method from Titanium tetraisopropoxide. Utilizing response surface methodology and the Box-Behnken design, various laboratory experiments were conducted to formulate bioplastics with a fixed starch ratio of 3:1, employing different compositions of cellulose, plasticizers, and nanoparticles. Characterization of the cellulose and TiO₂ was performed using Fourier Transform Infrared Spectroscopy (FTIR), X-ray Diffraction (XRD), and Scanning Electron Microscopy (SEM) to analyze functional groups, morphological characteristics, and crystal structures. The Zetasizer was employed to measure the TiO₂ nanoparticle size. Physical properties of the bioplastic films, such as thickness, density, moisture content, solubility, and tensile strength, were assessed across varying cellulose plasticizer ratios. The analysis revealed that bioplastics formulated with 6:6:1 and 4:6:1 exhibited superior tensile strength and physical properties. XRD results indicated an amorphous structure for the developed corn cob bioplastics, while SEM images showed changes in film morphology correlating with glycerol concentration. Bioplastics A (6:6:1) and B (4:6:1) were subjected to biodegradability testing over 30&#xa0;days, showing that the inclusion of plasticizers facilitated biodegradation, with bioplastic B (4:6:1) demonstrating a more favorable ecological profile for breakdown and disposal. This study underscores the potential of utilizing agricultural waste to produce environmentally friendly bioplastics.</p> Graphical Abstract <p></p>

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Corn Cob-Derived Bioplastics Infused with Titanium Dioxide Nanoparticles: Synthesis and Functional Assessment

  • 期刊论文

  • 发表日期：

    2025年1月23日

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  • Rajdeep Das,
  • Renu Singh,
  • L. R. Pooja,
  • Sibananda Darjee,
  • Ananta Vashisth,
  • T. V. Arun Kumar,
  • Anamika Thakur,
  • Manoj Kumar,
  • Manoj Shrivastava

摘要

This study focused on extracting cellulose from corn cobs to create biodegradable plastics enhanced with titanium dioxide (TiO₂) nanoparticles. Cellulose was obtained through various processes, including grinding, alkalization, bleaching, washing, and drying. TiO₂ nanoparticles were synthesized using the Sol–gel method from Titanium tetraisopropoxide. Utilizing response surface methodology and the Box-Behnken design, various laboratory experiments were conducted to formulate bioplastics with a fixed starch ratio of 3:1, employing different compositions of cellulose, plasticizers, and nanoparticles. Characterization of the cellulose and TiO₂ was performed using Fourier Transform Infrared Spectroscopy (FTIR), X-ray Diffraction (XRD), and Scanning Electron Microscopy (SEM) to analyze functional groups, morphological characteristics, and crystal structures. The Zetasizer was employed to measure the TiO₂ nanoparticle size. Physical properties of the bioplastic films, such as thickness, density, moisture content, solubility, and tensile strength, were assessed across varying cellulose plasticizer ratios. The analysis revealed that bioplastics formulated with 6:6:1 and 4:6:1 exhibited superior tensile strength and physical properties. XRD results indicated an amorphous structure for the developed corn cob bioplastics, while SEM images showed changes in film morphology correlating with glycerol concentration. Bioplastics A (6:6:1) and B (4:6:1) were subjected to biodegradability testing over 30 days, showing that the inclusion of plasticizers facilitated biodegradation, with bioplastic B (4:6:1) demonstrating a more favorable ecological profile for breakdown and disposal. This study underscores the potential of utilizing agricultural waste to produce environmentally friendly bioplastics.

Graphical Abstract