Multifunctional filter materials
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Solution Overview
Problem
Conventional face masks and respirators face challenges such as poor side fit, short life cycle, high cost, bulkiness, discomfort, and the persistence of respiratory viruses on surfaces, which can lead to continued exposure to infectious particles.
Innovation Solution
Incorporating an electrospun nanofiber membrane with an active nanomaterial agent into face masks and respirators, which filters out disease-causing agents and degrades them, providing enhanced breathability, antimicrobial properties, and biodegradability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional face masks are used, then they provide basic filtration, but they have poor side fit and short life cycle
Solution Approach 1:
The patent uses a composite structure combining an electrospun nanofiber membrane with integrated active nanomaterial agents (such as metal oxide nanoparticles). This composite material provides both filtration capability and antimicrobial degradation function, enabling the mask to maintain effectiveness longer by actively degrading trapped viruses rather than just physically blocking them, thus extending the usable life cycle while maintaining reliability.
Solution Approach 2:
The patent changes the functional parameters of the mask material by incorporating nanomaterials that provide antimicrobial and antiviral properties. This transforms the mask from a passive filtration device to an active degradation system, where the material parameters (chemical composition, nanoscale structure) are modified to enable prolonged effectiveness through active pathogen destruction rather than mere physical barrier function.
2Reliability
If respirators are used, then they provide better protection, but they are costlier, bulky, and highly uncomfortable
Solution Approach 1:
The patent employs a thin electrospun nanofiber membrane as the filter material, which provides effective filtration and antimicrobial action in a thin, flexible form factor. This eliminates the bulkiness of traditional respirators while maintaining protection levels, allowing the mask to conform comfortably to the face without the rigid or bulky structure of conventional respirators.
Solution Approach 2:
The electrospun nanofiber membrane integrates multiple functions: physical filtration of particles, antimicrobial degradation of bacteria, and antiviral degradation of viruses. This multi-functionality in a single thin layer provides respirator-level protection without the complexity, cost, and discomfort of traditional respirator systems.
3Ease of manufacture
If conventional masks are used, then they are simple and inexpensive, but viruses can live up to 72 h on surfaces and trapped particles subject users to potential infection
Solution Approach 1:
The mask incorporates active nanomaterial agents that automatically degrade viruses and bacteria upon contact, without requiring external intervention or replacement. The nanomaterials (such as metal oxides) provide self-sustaining antimicrobial and antiviral degradation capabilities, allowing the mask to neutralize pathogens it traps, thereby reducing infection risk while maintaining simplicity and affordability.
Solution Approach 2:
The patent converts the harmful effect of trapped viruses (which would otherwise persist and infect users) into a beneficial process by incorporating nanomaterials that actively degrade these trapped pathogens. The viruses and bacteria that are captured by the mask are subsequently destroyed by the antimicrobial nanomaterials, transforming the mask from a potential source of infection into an active disinfection device.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively filters out a wide range of disease-causing agents with low air filtration resistance, high rejection of microbial contaminants, and extended performance even after multiple washes, reducing exposure to infectious particles and promoting environmental sustainability.
Implementation Method 1
the electrospun nanofiber membrane filters disease-causing agents
Implementation Method 2
electrospun nanofiber membrane with an active nanomaterial agent incorporated into the electrospun nanofiber membrane
Implementation Method 3
the active nanomaterial agent degrades disease-causing agents
Implementation Method 4
active nanomaterial agent incorporated into the electrospun nanofiber membrane
Data Source
AI summary
Embodiments include a filter material including an electrospun nanofiber membrane and an active nanomaterial agent incorporated into the electrospun nanofiber membrane, wherein the electrospun nanofiber membrane filters disease-causing agents and the wherein the active nanomaterial agent degrades disease-causing agents. Embodiments further include a face mask and/or respirator including a filter material, wherein the filter material includes an electrospun nanofiber membrane and an active nanomaterial agent incorporated into the electrospun nanofiber membrane, wherein the electrospun nanofiber membrane filters disease-causing agents and the wherein the active nanomaterial agent degrades disease-causing agents.