Antimicrobial Polymeric Coating for Long-Lasting Surface Protection
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Solution Overview
Problem
Existing antimicrobial compositions, particularly antiviral agents, are ineffective and have limitations in maintaining activity on surfaces and are not suitable for incorporation into personal care products and coatings due to volatility and toxicity concerns.
Innovation Solution
A polymeric composition incorporating a silver complex and benzalkonium ions bound to a polystyrene sulfonate matrix, which is insoluble in water but soluble in volatile organic solvents, forming a stable film with effective antimicrobial and antiviral properties against bacteria, fungi, and viruses like SARS-CoV-2 and Coronavirus 229E.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional polymeric materials are used, then cost and ease of manufacture are maintained, but antimicrobial properties are insufficient and biofilm formation occurs
Solution Approach 1:
The patent combines multiple materials into a composite polymeric composition including a polymeric material, an antimicrobial agent, and a surfactant. This composite approach provides synergistic effects where the antimicrobial agent kills bacteria and the surfactant prevents biofilm formation, achieving reliable antimicrobial protection while maintaining manufacturing feasibility through established coating processes
2Reliability
If polymeric materials with inherent antimicrobial properties are used, then antimicrobial protection is improved, but cost and manufacturing complexity increase
Solution Approach 1:
The patent incorporates antimicrobial agents and surfactants into the polymeric composition before application, so the antimicrobial protection is pre-established in the coating formulation. This preliminary incorporation allows standard manufacturing processes to be used without requiring additional post-processing steps to add antimicrobial functionality
Solution Approach 2:
The surfactant acts as an intermediary that enhances the effectiveness of the antimicrobial agent by preventing biofilm formation. This mediator component ensures that the antimicrobial agent remains accessible and effective, improving overall antimicrobial protection while maintaining manufacturing simplicity through a single integrated formulation
3Reliability
If multiple coating layers are applied, then antimicrobial coverage is improved, but application complexity and time increase
Solution Approach 1:
The patent combines multiple functional components (polymer matrix, antimicrobial agent, and surfactant) into a single integrated coating composition. This merging of functions into one layer eliminates the need for multiple sequential coating steps, achieving comprehensive antimicrobial coverage while simplifying the application process to a single coat
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 composition maintains antimicrobial and antiviral activity for several months, significantly reducing microbial and viral contamination on surfaces and can be used in coatings and personal care products, including hand sanitizer gels, with a high reduction in viral replication.
Implementation Method 1
the antimicrobial and surfactant components of which work together to prevent bacterial adhesion and biofilm formation
Implementation Method 2
the antimicrobial and surfactant components of which work together to prevent bacterial adhesion and biofilm formation
Data Source
Figure 1~2
Figure 3~4B
Figure 5~6
AI summary
Polymeric composition having antimicrobial activity, said composition being a polymeric salt of a anionic polystyrene sulfonate and a cationic component, wherein said cationic component is selected from the group consisting of benzalkonium cations and positively charged micellar derivatives comprising benzalkonium cations and a silver complex. The composition may be included in alcoholic solution, that may be used for producing antimicrobial and antiviral coatings for objects and hand sanitizer gels.