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Biodegradable Nanocomposite Film with Enhanced Optical and Mechanical Properties


Recently, researchers from the Institute of Advanced Study in Science and Technology (IASST), Guwahati, have successfully fabricated a biodegradable nanocomposite film with optical and mechanical properties.


GS III: Science and Technology

Dimensions of the Article:

  1. Key Highlights of the Research
  2. Polymers
  3. Nanomaterials
  4. Nanocomposite Film

Key Highlights of the Research:

  • Polymer Utilization: The research explores the use of polymers, widely used across industries for their adaptability.
  • Advanced Applications Demand: Emerging applications such as flexible displays and organic LED tech require highly flexible and optically active polymers.
  • Nanomaterial Integration: Researchers have integrated nanomaterials to achieve the desired properties in polymers.
  • Polyvinyl Alcohol (PVA): Among biodegradable polymers, PVA stands out for its film-forming capabilities and mechanical strength.
  • Tailoring Properties: PVA’s optical and mechanical properties can be customized by incorporating suitable nanomaterials.
  • Nanocomposite Creation: The research team developed a biodegradable PVA-CuO nanocomposite film using a simple solution casting method.
  • Copper Salt Precursor: Copper salt was used as a precursor for in-situ formation of CuO nanoparticles under varying heat conditions.
  • Enhanced Features: The nanocomposite film exhibited superior optical, mechanical, and antimicrobial properties compared to pure PVA films.
  • Nanoparticle Confirmation: The presence of CuO nanoparticles in the polymer matrix was confirmed through spectroscopic and microscopic techniques.


  • Definition: Polymers are large molecules consisting of repeating monomer subunits.
  • Versatility: They play a crucial role in various fields, including chemistry, materials science, and industry.
  • Diverse Properties: Polymers exhibit a wide range of properties and find applications in everyday products like plastics, rubber, and fibers.
  • Biodegradable Polymers: Some polymers are biodegradable, breaking down naturally into environmentally friendly substances over time.


  • Nano Scale: Nanomaterials are engineered at the nanoscale, with at least one dimension measuring less than 100 nm.
  • Distinct Properties: Their small size leads to significantly different properties compared to bulk materials.

Nanocomposite Film:

  • Composition: A nanocomposite film is a thin, layered material comprising a polymer matrix integrated with nanoparticles or nanomaterials.
  • Purpose: These films are designed to combine the unique properties of nanomaterials with the advantages of the polymer matrix to achieve specific desired characteristics.

April 2024