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  1. Home
  3. The Use Of Natural Rubber As An Initiator Of Ldpe Biodegradation In Soil.
  1. Home
  3. The Use Of Natural Rubber As An Initiator Of Ldpe Biodegradation In Soil.

Related Experiment Video

Isolation of Native Soil Microorganisms with Potential for Breaking Down Biodegradable Plastic Mulch Films Used in Agriculture
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The Use of Natural Rubber as an Initiator of LDPE Biodegradation in Soil.

Ivetta Varyan1,2, Polina Tyubaeva1,2, Matheus Poletto3

  • 1Department of Biological and Chemical Physics of Polymers, Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, 4 Kosygina Street, 119334 Moscow, Russia.

Polymers
|November 13, 2025

View abstract on PubMed

Summary
This summary is machine-generated.

Natural rubber initiates low-density polyethylene biodegradation in soil. Composites with over 30% natural rubber show significant mass loss and reduced crystallinity, with 50% NR demonstrating the highest degradation.

Keywords:
biodegradationnatural rubberpolyethylene

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Area of Science:

  • Polymer Science
  • Materials Science
  • Environmental Science

Background:

  • Controlling multi-tonnage polymer quantities, particularly their biodegradability, is a critical environmental challenge.
  • Developing effective biodegradation strategies for common plastics like low-density polyethylene (LDPE) is essential.

Purpose of the Study:

  • To investigate the potential of natural rubber (NR) as a biodegradation initiator for LDPE in soil.
  • To characterize the structure, properties, and biodegradation rates of LDPE films blended with varying NR content.

Main Methods:

  • Fourier transform infrared spectroscopy (FTIR)
  • Electron paramagnetic resonance (EPR)
  • Differential scanning calorimetry (DSC)
  • Thermogravimetric analysis (TGA)
  • Scanning electron microscopy (SEM)
  • Atomic force microscopy (AFM)
  • Gel-permeation chromatography (GPC)
  • Acoustic microscopy

    • Main Results:

    • Natural rubber (NR) concentrations above 30% induce an interpenetrating network structure in LDPE, initiating biodegradation.
    • The 50% NR/LDPE composite exhibited the highest mass loss (70%), significantly degrading compared to 40% NR (38%).
    • Soil burial led to decreased crystallinity and molecular weight in LDPE/NR composites, confirming biodegradation.

    Conclusions:

    • Natural rubber effectively initiates the biodegradation of low-density polyethylene in soil environments.
    • The formation of an interpenetrating NR/LDPE structure is key to enhanced biodegradation.
    • Optimized NR content, particularly around 50%, maximizes the degradation of LDPE films.