Polyaniline Composite with Low Chlorine and High Conductivity
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Solution Overview
Problem
Current methods for producing polyaniline composites face challenges such as high production costs, difficulty in achieving complex shapes, and low conductivity due to high chlorine content and molecular weight limitations, which hinder their industrial application and environmental compatibility.
Innovation Solution
A polyaniline composite is produced using phosphoric acid and an emulsifier in a two-phase solution, resulting in a low chlorine content and high molecular weight polyaniline with improved conductivity, achieved through chemical oxidative polymerization that reduces low-molecular weight components and enhances solubility and film formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If chemical oxidative polymerization is used to produce polyaniline, then production cost is reduced and mass production is enabled, but the resulting polyaniline has high chlorine content and low molecular weight which limits conductivity
Solution Approach 1:
The patent changes the chemical parameters of the polymerization process by using phosphoric acid instead of traditional doping agents, and controlling the molecular weight distribution to reduce low-molecular weight components. This results in polyaniline with reduced chlorine content (0.6 wt% or less) and improved conductivity while maintaining ease of manufacture
Solution Approach 2:
The patent creates a composite structure by controlling the molecular weight distribution of polyaniline, specifically reducing the proportion of low-molecular weight components (P10000/PALL ≤ 0.15) while maintaining high molecular weight components. This composite approach improves conductivity without sacrificing the benefits of chemical oxidative polymerization
2Reliability
If oxidative electropolymerization is used to improve electric properties, then conductivity is enhanced, but production cost increases and complex shapes cannot be obtained
Solution Approach 1:
The patent modifies the polymerization parameters by using phosphoric acid and controlling molecular weight distribution to achieve high conductivity through chemical oxidative polymerization, eliminating the need for expensive electropolymerization processes while maintaining excellent electric properties
3Ease of manufacture
If polyaniline in non-conductive basic state is used, then synthesis is simplified, but solubility in organic solvents is poor making industrial production difficult
Solution Approach 1:
The patent changes the chemical composition by incorporating phosphoric acid and controlling molecular weight distribution, which significantly improves the solubility of polyaniline in organic solvents while maintaining synthesis simplicity. The reduced chlorine content and controlled molecular structure enable better dissolution properties
4Reliability
If conventional doping methods are used to achieve conductivity, then protonation is enabled, but the conductive polyaniline composite is substantially not dissolved and not molten
Solution Approach 1:
The patent changes the chemical parameters by using phosphoric acid and controlling molecular weight distribution, which enables the conductive polyaniline composite to be dissolved and melted. This is achieved by reducing chlorine content to 0.6 wt% or less and controlling the molecular weight distribution, allowing the material to be processed in solution form while maintaining conductivity
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 approach results in a polyaniline composite with reduced chlorine content, high conductivity, and improved molecular weight distribution, enabling the production of conductive materials suitable for electronic applications while meeting environmental regulations.
Implementation Method 1
A polyaniline composite is produced using phosphoric acid and an emulsifier in a two-phase solution, resulting in a low chlorine content and high molecular weight polyaniline with improved conductivity, achieved through chemical oxidative polymerization
Implementation Method 2
the polyaniline molecules being doped with the proton donar
Implementation Method 3
a polyaniline composite comprising substituted or unsubstituted polyaniline molecules and a proton donar, the polyaniline molecules being doped with the proton donar
Implementation Method 4
A polyaniline composite is produced using phosphoric acid and an emulsifier in a two-phase solution
Data Source
Figure 1~2
Figure 3~4
AI summary
A polyaniline composite including substituted or unsubstituted polyaniline molecules and a proton donar, the polyaniline molecules being doped with the proton donar, the composite having a chlorine content of 0.6 wt% or less and the composite satisfying the following formula (1): P10000/PALL≦0.15 wherein P10000 is the total sum of the weights of the polyaniline molecules contained in the polyaniline composite having a molecular weight of 10000 or less; and PALL is the total sum of the weights of all polyaniline molecules contained in the polyaniline composite.