Oxidized Cellulose Composite Materials via Diamine Condensation
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Solution Overview
Problem
Existing polymer production methods using dicarboxylic acids in condensation reactions limit the development of materials with novel properties, as they do not fully exploit the potential of oxidized cellulose containing carboxyl groups.
Innovation Solution
A method involving the use of oxidized cellulose, formed through catalytic oxidation with iron and hydrogen peroxide at acidic pH, is mixed with diamines or diols to create composite polymers with amide, ester, or both amide and ester bonds, allowing for crosslinked or uncrosslinked structures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If dicarboxylic acid is used in condensation reactions to produce polymers, then polymer production is achieved with established methods, but the development of materials with novel properties is limited
Solution Approach 1:
The patent changes the chemical parameters of the reaction system by replacing dicarboxylic acid with oxidized cellulose containing carboxyl groups. This parameter change enables the production of composite materials with novel properties while maintaining the condensation reaction framework, thus improving material property diversity without fundamentally increasing system complexity
Solution Approach 2:
The patent creates composite materials by combining oxidized cellulose with diamines or diols in condensation reactions. This composite approach allows integration of cellulose-derived carboxyl groups with amine or hydroxyl groups, producing materials with new and useful properties that neither component alone could provide
2Adaptability or versatility
If oxidized cellulose is integrated into polymer chains through condensation reactions, then composite materials with new properties are obtained, but the manufacturing process requires new methods
Solution Approach 1:
The patent makes oxidized cellulose a universal replacement for dicarboxylic acid in condensation reactions. The carboxyl-containing oxidized cellulose can react with both diamines and diols, enabling multi-functional applications in fiber, textile, film, and plastic industries while using a single versatile material platform
Solution Approach 2:
The patent modifies the chemical composition parameters by introducing oxidized cellulose with controlled carboxyl group content into the polymerization process. This parameter adjustment allows tuning of material properties while maintaining compatibility with existing condensation reaction conditions, balancing novelty with manufacturability
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
This approach enables the production of composite materials with new properties, such as enhanced functionality and versatility, suitable for various applications including fibers, textiles, and plastics, by integrating oxidized cellulose into polymer chains.
Implementation Method 1
catalytic oxidation with iron and hydrogen peroxide at an acidic pH
Implementation Method 2
oxidized cellulose comprising at least one carboxyl
Implementation Method 3
Condensation reactions of a diamine with a dicarboxylic acid or of a diol with a dicarboxylic acid have been used to produce polymers
Data Source
AI summary
The present disclosure provides a composite of (a) oxidized cellulose comprising at least one carboxyl and (b) at least one component selected from a diamine, a diol, or mixture thereof. This disclosure further relates to methods of making such composite materials and suitable uses thereof, including in fibers, fabrics, textiles, films, fillers, packaging materials, plastics, etc.