Pectin Composite Stretchable Electronics
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current deformable electronic materials lack the necessary combination of mechanical properties, electrical properties, and stretchability required for applications in wearable electronic devices and electronic skin, which limits their flexibility and functionality.
Innovation Solution
A composite material is developed, comprising a polymer network with pectin or its derivatives, a low-molecular compound with hydrophilic groups, and polyvalent metal ions, which enhances stretchability while maintaining improved charge mobility and electrical properties by forming coordination bonds and incorporating reinforcing agents like graphite or carbon nanotubes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If deformable electronic materials are designed to be highly stretchable like human skin, then mechanical flexibility and adaptability improve, but electrical properties and charge mobility deteriorate
Solution Approach 1:
The patent employs a composite material system consisting of pectin polymer network, low-molecular compound plasticizer, and polyvalent metal ions. This composite structure allows the material to simultaneously achieve high stretchability (≥100% elongation) and maintained electrical conductivity through the synergistic interaction of its components, where the polymer network provides mechanical flexibility and the metal ions provide charge transport pathways.
Solution Approach 2:
The patent introduces regions with different functional properties within the material structure. The pectin polymer network provides mechanical flexibility and stretchability in certain regions, while the polyvalent metal ions coordinated with carboxyl groups create conductive pathways in other regions. This local differentiation allows the material to exhibit both high stretchability and adequate electrical properties simultaneously.
2Strength
If the polymer network structure is strengthened to improve mechanical properties, then strength and stability improve, but stretchability and flexibility worsen
Solution Approach 1:
The patent modifies the physical and chemical parameters of the polymer network by coordinating polyvalent metal ions with carboxyl groups of pectin. This coordination changes the intermolecular interaction strength and network structure, enabling the material to achieve both high strength (tensile strength ≥5 MPa) and high stretchability (≥100% elongation) by optimizing the balance between network rigidity and chain mobility.
Solution Approach 2:
The low-molecular compound acts as a plasticizer intermediary between the polymer chains. It reduces intermolecular forces and increases free volume within the polymer network, allowing the material to maintain mechanical strength while achieving enhanced stretchability and flexibility required for wearable applications.
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 composite material exhibits excellent flexibility, stretchability, and electrical conductivity, making it suitable for applications in infrared absorbers, photoelectric devices, and electronic devices that require high stretchability and temperature responsivity, such as wearable electronics and sensors.
Implementation Method 1
a polyvalent metal ion coordinated with an anion present in a polymer chain of the polymer network
Data Source
AI summary
A composite includes a polymer network including pectin or a pectin derivative; a low-molecular compound having a hydrophilic group in the polymer network; and a polyvalent metal ion coordinated with an anion present in the polymer chain of the polymer network.