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Polymers Used in Transparent Face Masks-Characterization, Assessment, and Recommendations for Improvements Including
Katie E Miller1,2, Ann-Carolin Jahn1,2, Brian M Strohm1
1School of Chemistry and Materials Science, Rochester Institute of Technology, Rochester, NY 14623, USA.
Polymers
|April 12, 2025
Summary
Transparent face masks are crucial for communication, especially for the deaf and hard-of-hearing. This study evaluated polymer properties of commercial masks, recommending improvements for better functionality and sustainability.
Area of Science:
- Materials Science
- Polymer Science
- Audiology
Background:
- Rising hearing loss projections necessitate improved communication aids.
- Face masks impede lip-reading for 80% of deaf/hard-of-hearing individuals and hinder social interaction for all.
- Development of effective transparent face masks is essential.
Purpose of the Study:
- To evaluate the material properties of polymers used in commercial transparent face masks.
- To identify areas for improvement in transparent face mask design and functionality.
- To provide recommendations for developing more sustainable and effective transparent face masks.
Main Methods:
- Fourier-transform infrared (FTIR) spectroscopy for chemical composition analysis.
- X-ray fluorescence/energy-dispersive X-ray (XRF/EDX), Scanning Electron Microscopy/energy-dispersive X-ray (SEM/EDX), and contact angle measurements for surface coatings.
- Thermogravimetric analysis/differential scanning calorimetry (TGA/DSC), size-exclusion chromatography (SEC), and tensile testing for thermal, molecular weight, and mechanical properties.
- UV-Vis reflectance and haze measurements for optical properties.
Main Results:
- Identified diverse polymer compositions in transparent mask portions (PET, PETG, PC, iPP, PVC, SR).
- Confirmed presence of anti-fog and scratch-resistant coatings on most masks.
- Characterized thermal, molecular weight, mechanical, and optical properties of the mask materials.
Conclusions:
- Commercial transparent face masks exhibit varied material properties.
- Recommendations are provided for enhancing transparent face mask performance, including material selection and sustainability.
- Further development is needed to optimize transparent face masks for improved communication and user experience.
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