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Updated: Jun 27, 2026

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Hair-Reinforced Elastomer Matrix Composites: Formulation, Mechanical Testing, and Advanced Microstructural

Eugene S Statnik1, Julijana Cvjetinovic2, Semen D Ignatyev1

  • 1«LUCh» Lab, NUST MISIS, 119049 Moscow, Russia.

Polymers
|November 25, 2023
PubMed
Summary

Human hair reinforced nitrile butadiene rubber composites demonstrate significant improvements in mechanical properties. This sustainable material offers enhanced stiffness and strength, presenting a viable alternative to traditional non-recyclable composites.

Keywords:
SEMcarboncompositefracturehairpolymer

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Area of Science:

  • Materials Science
  • Polymer Science
  • Composite Materials

Background:

  • Traditional epoxy matrix composites offer high performance but suffer from poor recyclability and biodegradability.
  • Carbonized elastomeric composites present a recyclable alternative, with ongoing research into various fillers.
  • Renewable organic fibers, like human hair, are being explored as sustainable reinforcing agents for elastomeric matrices.

Purpose of the Study:

  • To investigate the mechanical performance of human hair-reinforced nitrile butadiene rubber (HH-NBR) composites.
  • To evaluate the reinforcement effect of human hair in both cured and carbonized states.
  • To assess the interfacial bonding and spatial distribution of hair fibers within the rubber matrix.

Main Methods:

  • Production of unidirectional and quasi-isotropic HH-NBR composites with varying hair volume fractions.
  • Characterization using scanning electron microscopy (SEM), Raman spectroscopy, and photoacoustic microscopy.
  • Mechanical testing including tensile tests to determine elastic modulus, ultimate tensile strength, and damage tolerance.

Main Results:

  • Significant enhancement in elastic modulus (up to 10x) and ultimate tensile strength (up to 3x) was observed.
  • Improved damage tolerance was achieved in the reinforced composites.
  • SEM confirmed satisfactory interfacial bonding between human hair fibers and the nitrile butadiene rubber matrix.

Conclusions:

  • Human hair serves as an effective reinforcing fiber for nitrile butadiene rubber composites.
  • The developed HH-NBR composites exhibit superior mechanical properties compared to unreinforced materials.
  • Photoacoustic microscopy shows potential for non-destructive testing and 3D reconstruction of the fiber distribution.