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US 12,491,457 B2Granted
Quantitative disorder analysis and particle removal efficiency of fiber-based filter media
OwnerRobert Allen Makin, III, Steven Michael Durbininventors
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Abstract
A process for predicting and adjusting particle removal efficiency of fiber-based filter media based on quantification of disorder. An order parameter may be extracted through Raman spectroscopy or scanning electron microscopy. Production processes may be adjusted to change (e.g., increase) the particle removal efficiency of fiber-based filter media utilizing a predefined correlation between order parameter and particle removal efficiency. The filter media may be utilized in masks, filters, and other applications.
Claims15
A method of fabricating polymer fiber filter media, comprising:
- determining a relationship between an order parameter squared (S2) of the polymer fiber filter media and a process parameter of a fabrication process used to fabricate the polymer fiber filter media;
- determining a relationship between S2 and values of a selected property of the polymer fiber filter media;
- fabricating an initial polymer fiber filter media sample using an initial value of the process parameter for the fabrication process;
- determining S2 for the initial polymer fiber filter media sample;
- and
- utilizing the relationship between S2 and the selected property of the polymer fiber filter media to adjust the initial value of the process parameter of the fabrication process to control-the selected property for subsequent polymer fiber filter media made using the adjusted fabrication process parameter, wherein:
- the selected property of the polymer fiber filter media comprises initial particle removal filtering efficiency, and wherein
- the particle filtering efficiency declines as S2 increases.
5 more elements
Dependencies are inferred from the claim text.