Copper Nanoparticle Synthesis Stabilization via Polysaccharide Coating
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Solution Overview
Problem
Current methods for producing antimicrobial and antiviral agents based on copper nanoparticles lack systematic studies on process parameters and reagent ratios, leading to instability and reduced effectiveness in applications such as sanitizing products and strategic environments.
Innovation Solution
A process for synthesizing copper nanoparticles using co-precipitation with polysaccharide biopolymers or cationic surfactants, controlling parameters like reagent feeding, molar ratios, stirring speed, and temperature to stabilize and optimize nanoparticle morphology and stability, enhancing their antimicrobial and antiviral properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If copper nanoparticles are produced by chemical reduction route, then energy cost is reduced compared to physical route, but particle stability and dispersion in liquid medium deteriorates
Solution Approach 1:
The patent introduces stabilizing agents (polymers or surfactants) as intermediaries between the copper nanoparticles and the liquid medium. These stabilizing agents adsorb onto the nanoparticle surfaces, providing steric or electrostatic repulsion that prevents aggregation and maintains dispersion stability, thereby resolving the contradiction between low-energy chemical synthesis and particle stability.
Solution Approach 2:
The patent creates composite structures by combining copper nanoparticles with stabilizing agents (polymers or surfactants) to form stable colloidal dispersions. This composite approach maintains the antimicrobial efficacy of copper while adding the stabilizing properties of the organic compounds, solving the stability issue inherent in pure metal nanoparticle synthesis.
2Reliability
If nanoparticle size is decreased to nanometric scale, then antimicrobial and antiviral activity is enhanced, but particle aggregation and instability increase
Solution Approach 1:
Stabilizing agents serve as intermediaries that prevent aggregation of nanometric copper particles. The polymers or surfactants form protective layers around the nanoparticles, maintaining their small size and high surface area-to-volume ratio while preventing the aggregation that would otherwise occur due to van der Waals forces, thus preserving both antimicrobial activity and stability.
Solution Approach 2:
The patent modifies surface properties of copper nanoparticles by introducing organic stabilizing agents, changing parameters such as surface charge, hydrophobicity, and steric hindrance. These parameter changes prevent aggregation while maintaining the nanometric size scale required for high antimicrobial efficacy.
3Reliability
If systematic control of process parameters is implemented, then nanoparticle stability and effectiveness are improved, but process complexity increases
Solution Approach 1:
The patent systematically controls and optimizes process parameters including reagent ratios, pH, temperature, and stirring speed to achieve consistent nanoparticle production with desired stability and effectiveness. By establishing standardized parameter ranges and protocols, the method transforms a complex multi-variable process into a reproducible manufacturing procedure.
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 controlled synthesis of copper nanoparticles results in stable, effective antimicrobial and antiviral agents that can be incorporated into various materials, significantly reducing microbial loads and viral activity, making them suitable for high-contamination environments.
Implementation Method 1
a stabilizing agent should be used to provide maintenance of the structure formed by a chemical reaction
Implementation Method 2
which will fill the particles and disperse it in the liquid medium
Implementation Method 3
The polysaccharide biopolymer on the surface of metal nanoparticles modifies the type of interaction with microorganisms, as it presents characteristics of its main food source
Implementation Method 4
the cationic surfactant stabilizes the metal nanoparticles by a surface effect by forming a micellar structure in aqueous medium, where the hydrophobic chain is inside the micellar, coating the metallic material, and the positive-charged end is outside the micellar
Implementation Method 5
From their detergent characteristics, surfactants have a biocide effect against some microorganisms, modifying the stability and porosity of the membrane structure, causing cell death
Implementation Method 6
from a reduction oxide reaction, the metal is produced in its reduced state
Implementation Method 7
the synthesis of metal nanoparticles by chemical route, starting on conjugated salt of the metal which is soluble in aqueous medium
Data Source
AI summary
This invention is related to a product consisting of metallic copper nanoparticles with antimicrobial and antiviral activity coated with a polysaccharide biopolymer, or a cationic surfactant for application as an antimicrobial and antiviral agent, i.e., with biocidal action by contact surface effect, which can be used in the agricultural, veterinary, hospital, and other environments.