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Case study on risk evaluation of printed electronics using nanosilver ink.

Ellen Kim1, Ji Hyun Lee1, Jin Kwon Kim1

  • 1Institute of Nanoproduct Safety Research, Hoseo University, 165, Sechul-ri, Baebang-myun, Asan, Chungnam 336-795 Korea.

Nano Convergence
|February 14, 2017
PubMed
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This study found minimal silver nanoparticle (AgNP) release from printed electronics, indicating no risk to consumers or workers. AgNP exposure levels were below background, ensuring safety in nanosilver ink applications.

Area of Science:

  • Nanotechnology
  • Materials Science
  • Environmental Health

Background:

  • Increasing use of manufactured nanomaterials, like silver nanoparticles (AgNPs), in consumer products raises exposure concerns.
  • AgNPs are present in household items, and workplace release during manufacturing is a growing concern.
  • Understanding AgNP release from emerging technologies is crucial for risk assessment.

Purpose of the Study:

  • To quantify silver nanoparticle (AgNP) release during the operation of a printed electronics printer.
  • To assess potential risks associated with AgNP exposure from printed electronics.

Main Methods:

  • Utilized an exposure simulation chamber equipped with a nanoparticle collector.
  • Employed a scanning mobility particle sizer (SMPS) and condensation particle counter (CPC) for real-time particle measurement.

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  • Collected airborne particles on mixed cellulose ester (MCE) filters for AgNP analysis.

    • Main Results:

    • Observed very low AgNP release during printer operation, with indoor levels below outdoor background concentrations.
    • Risk assessment using the margin of exposure (MOE) approach indicated results far exceeding the target MOE of 1000.
    • Both the current simulation and a prior workplace study demonstrated negligible risk.

    Conclusions:

    • Printed electronics utilizing nanosilver ink present no significant risk concern.
    • The study supports the safe application of nanosilver in printed electronics.
    • Findings suggest minimal environmental and occupational health risks associated with this technology.