Microplastic Materials for Inhalation Studies: Preparation by Solvent Precipitation and Comprehensive Characterization.

ABSTRACT: Assessing the inhalation hazard of microplastics is important but necessitates sufficient quantity of microplastics that are representative and respirable (<4 µm). Common plastics are not typically manufactured in such small sizes. Here, solvent precipitation is used to produce respirable test materials from thermoplastics polyurethane (TPU), polyamide (PA-6), polyethylene terephthalate (PET), and low-density polyethylene (LDPE). Complementary methods verified that the desired size range is achieved both in number metrics and in mass metrics. To assess if the test materials are representative of their original plastic, a range of molecular properties, particle properties, and impurities are characterized: chemical composition, molecular weight, crystallinity, molecular mobility, density, s

SUBMITTER: Santizo KY 

PROVIDER: S-EPMC11840474 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature