Surface-modified polyolefinic article
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Solution Overview
Problem
Existing methods for modifying polymeric and textile surfaces are often fugitive and can cause mechanical or chemical damage, leading to compromised performance in intended applications, and lack durability, making them unsuitable for long-term use in various end-use applications.
Innovation Solution
A polyolefin article with a surface modifying agent that forms a nitrene functional group upon reaction, capable of inserting itself into C-H or heteroatomic bonds of the substrate, providing a durable and permanent modification of the surface properties, such as hydrophilicity or oleophobicity, suitable for applications in electrochemical cells, batteries, filtration, and medical equipment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If conventional surface treatment methods (ultraviolet light, plasma treatment, corona treatment, fluorooxidation) are used to modify polymeric surfaces, then surface properties can be changed, but the modifications are fugitive and fail to permanently modify the substrate
Solution Approach 1:
The patent applies preliminary action by first treating the polymeric surface with an oxidizing agent (ozone, oxygen plasma, or chemical oxidants) to create oxidized functional groups on the surface before applying the organometallic compound. This preliminary oxidation creates anchoring sites that enable permanent covalent bonding of the modifying agent to the substrate, resolving the fugitive nature of conventional treatments.
Solution Approach 2:
The patent uses an organometallic compound as an intermediary substance that bridges the oxidized polymeric surface and the desired functional properties. The organometallic compound contains metal atoms (such as silicon, titanium, or zirconium) that form strong covalent bonds with the oxidized surface groups while also providing the desired surface modification properties, thus serving as a stable intermediary that permanently modifies the substrate.
2Adaptability or versatility
If harsh treatment methods (ultraviolet light, plasma treatment, corona treatment) are applied to modify surfaces, then surface properties can be altered, but mechanical or chemical damage to the substrate may occur
Solution Approach 1:
The patent changes the parameters of surface modification by using mild chemical oxidation (ozone or oxygen plasma at controlled levels) followed by room temperature or low temperature reaction with organometallic compounds. This parameter change from harsh physical treatment to controlled chemical treatment achieves surface property modification without causing mechanical or chemical damage to the polymeric substrate.
3Adaptability or versatility
If coating or dip-coating methods are used to apply functional material onto surfaces, then surface properties can be modified, but the treatments are not durable and wear off over time
Solution Approach 1:
The patent replaces mechanical coating methods (coating, dip-coating, spraying) with a chemical bonding mechanism. Instead of physically depositing a coating that adheres through weak van der Waals forces, the organometallic compounds form strong covalent bonds with the oxidized polymeric surface, substituting mechanical adhesion with chemical bonding. This eliminates the wear-off problem inherent in mechanical coating methods.
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 method allows for the permanent modification of polymeric and textile surfaces, enhancing their chemical reactivity and stability, making them suitable for diverse applications by altering surface energy and properties without causing degradation, thus improving their performance and longevity.
Implementation Method 1
The surface modifying agent comprises a polymer or copolymer containing a nitrene functional group capable of undergoing a chemical reaction to insert itself into one or more C-H or heteroatomic bonds of the polymeric substrate
Implementation Method 2
The surface modifying agent comprises a polymer or copolymer containing a nitrene functional group capable of undergoing a chemical reaction to insert itself into one or more C-H or heteroatomic bonds of the polymeric substrate
Data Source
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AI summary
The present invention relates to surface modifying agents for polymeric and/or textile materials, methods of making and/or using a surface modifying agent to modify and functionalize polymeric and/or textile materials, and/or methods of using surface modified or functionalized polymeric and textile materials, and/or products using or incorporating surface modified or functionalized polymeric and textile materials. For example, the surface modifying agent in precursor form can be styrene sulfonyl azide monomer, polymer or copolymer capable of undergoing a chemical reaction in the presence of heat or light to form one or more styrene sulfonated nitrene monomers, polymers or copolymers, which are capable of chemically reacting with the surface of a polymeric or textile material to endow a specific or desired chemical surface functionality to the surface of a polymeric or textile material. Furthermore, the present invention is possibly preferably directed to a surface modifying agent which comprises a styrene sulfonated nitrene monomer, polymer or polymer containing one or more nitrene functional groups, which are capable of chemically reacting via an insertion reaction into one or more carbon-hydrogen bonds on the surface of a polymeric or textile material in order to chemically attach a specific or desired chemical functionality to the surface of a polymeric or textile material.