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Casting Protocols for the Production of Open Cell Aluminum Foams by the Replication Technique and the Effect on Porosity
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Iced block method: An efficient method for preparation of micro-sized expanded polystyrene foams.

Jin Il Kwak1, Youn-Joo An1

  • 1Department of Environmental Health Science, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul, 05029, South Korea.

Environmental Pollution (Barking, Essex : 1987)
|April 3, 2020
PubMed
Summary

A new method efficiently prepares microplastic expanded polystyrene (EPS) foams. The iced EPS block technique yields more small EPS foams faster and cheaper than other methods, aiding environmental research.

Keywords:
Expanded polystyreneFoamFragmentLaboratory techniqueMicroplastic

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Area of Science:

  • Environmental Science
  • Materials Science

Background:

  • Microplastics, including expanded polystyrene (EPS) foams, pose environmental risks.
  • Research on EPS foam toxicity and bioaccumulation is limited compared to microplastic beads.

Purpose of the Study:

  • To develop an efficient method for preparing micro-sized EPS foams for research.
  • To compare the new method with existing microplastic preparation techniques.

Main Methods:

  • The study introduces an 'iced EPS block method' involving iced EPS block + water.
  • This method was compared against EPS + ice + water and EPS + water techniques.
  • An optimal protocol involving iced EPS block preparation, grinding, sieving, and collection was established.

Main Results:

  • The iced EPS block method produced significantly higher quantities of smaller EPS foams (20-200 μm and 200-500 μm).
  • This method proved more cost-effective, requiring less labor and time than previously reported methods.

Conclusions:

  • The proposed iced EPS block method is an efficient and economical way to prepare micro-sized EPS foams.
  • This technique can support future research on the environmental impact of EPS foams.