Functionalized Elastomer Nanocomposites for Stretchable Conductivity
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Solution Overview
Problem
Existing methods for producing stretchable manufactured articles with maintained functional properties after multiple deformation cycles are complex and unsatisfactory, as they often result in poor mechanical properties, adhesion issues between metal and polymer, and compromised biocompatibility.
Innovation Solution
A method involving the implantation of neutral clusters of nanometric dimensions of functional materials, such as metals or oxides, into an elastomeric material to form a metal/polymer nanocomposite, which maintains desired electrical, biocompatibility, and dielectric properties even after significant elastic deformations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If ion implantation techniques are used to form metallic deposits on polymer surfaces, then electrical conductivity is improved, but charge build-up occurs within the polymer substrate and biocompatibility is compromised
Solution Approach 1:
The patent introduces a plasma treatment as an intermediary process that modifies the polymer surface to enhance metal adhesion without requiring ion implantation. The plasma creates a reactive surface layer that promotes bonding between metal particles and the polymer, achieving conductivity without the harmful charge build-up associated with direct ion implantation
Solution Approach 2:
The patent replaces the mechanical/physical ion implantation process with a chemical plasma treatment approach. Instead of forcing ions into the polymer matrix through high energy impact, the patent uses plasma chemistry to create surface modifications that enable metal deposition and adhesion through chemical interactions rather than mechanical implantation
2Reliability
If chemical deposition processes are used to form metal nanoparticles in polymer matrix, then electrical functionality is improved, but dimensional stability is compromised due to polymer swelling
Solution Approach 1:
The patent applies plasma treatment to the polymer surface before metal deposition to create a pre-modified surface that is more receptive to metal particles. This preliminary action ensures that metal particles adhere properly without requiring chemical agents that would cause swelling, thus maintaining dimensional stability while achieving electrical functionality
Solution Approach 2:
The patent replaces chemical deposition processes with a physical plasma treatment followed by metal particle deposition. This substitution eliminates the need for chemical agents that cause polymer swelling, maintaining dimensional stability while still achieving functional metal-polymer composites
3Reliability
If continuous deposits of functional material are formed on polymer, then electrical properties are improved, but adhesion between metal and polymer deteriorates
Solution Approach 1:
The patent uses plasma treatment to create a segmented or layered surface structure on the polymer. The plasma modifies the surface to create distinct zones with different properties - a reactive outer layer for metal adhesion and an inner bulk for structural integrity. This segmentation allows continuous metal deposits to adhere properly to the modified surface without compromising the underlying polymer
Solution Approach 2:
The plasma-treated surface layer acts as an intermediary between the metal deposit and the bulk polymer. This intermediate layer provides chemical groups and surface characteristics that promote strong adhesion between the continuous metal deposit and the polymer substrate, resolving the adhesion problem while maintaining electrical properties
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 achieves functionalized elastomeric manufactured articles that maintain electrical conductivity and biocompatibility through multiple deformation cycles, with improved mechanical properties and adhesion between the metal and polymer components.
Implementation Method 1
comprises the operation of forming a deposit for implanting neutral clusters of nanometric dimensions of said material in an elastomeric material
Data Source
AI summary
A method is described for the production of a manufactured article (20) constituted of an elastomeric polymer substrate, in selected zones of which there are deposits of particles of nanometric size of a metal or some other compound which create a region (24) of the polymeric element having desired electrical, biocompatibility and/or dielectric properties, and such that said properties are maintained even after numerous elastic deformations of the manufactured article; the invention also relates to functionalized elastomeric manufactured articles obtained by means of said method.