Starch-Polyurethane Wound Hydrogel for Sustainable Moisture Management
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Solution Overview
Problem
Existing wound dressings made from fully synthetic materials face issues with biocompatibility, sustainability, and environmental compatibility, necessitating a more biocompatible and environmentally friendly alternative for wound treatment.
Innovation Solution
A polymer is produced using an isocyanate-terminated prepolymer and a starch derivative, where the starch derivative is covalently bonded to the polymer, creating a hydrated polyurethane hydrogel or foam system that utilizes renewable materials, enhancing biocompatibility and sustainability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If fully synthetic materials are used for hydrogel wound dressings, then manufacturing consistency and material strength are improved, but biocompatibility and environmental compatibility deteriorate
Solution Approach 1:
The patent applies composite materials by combining synthetic polyurethane prepolymer with natural starch derivative to create a hybrid hydrogel system that integrates the mechanical advantages of synthetic materials with the biocompatibility and sustainability of natural materials
Solution Approach 2:
The patent changes the material composition parameters by incorporating starch derivative at specific proportions (0.5-5 wt%) into the polyurethane system, thereby modifying the chemical composition to achieve improved biocompatibility while maintaining structural integrity
2Reliability
If fully synthetic materials are used for hydrogel wound dressings, then material consistency and reliability are improved, but sustainability and environmental compatibility deteriorate
Solution Approach 1:
The patent modifies the material composition by incorporating renewable starch derivative into the synthetic polyurethane system, changing the sustainability parameters while maintaining reliable wound dressing performance through controlled formulation
Solution Approach 2:
The patent creates a composite hydrogel system combining synthetic and natural materials, where the starch derivative component provides sustainability benefits while the polyurethane component ensures material reliability and consistent performance
3Object-affected harmful factors
If starch derivative is covalently bonded to polymer, then biocompatibility is improved, but manufacturing complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-functionalizing the starch derivative with reactive groups before polymerization, enabling straightforward covalent bonding during the polymerization process without requiring complex post-synthesis modification steps
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 polymer provides a moist wound environment that supports healing by absorbing exudate and releasing moisture, is non-adherent, and is easy to manufacture, offering improved compatibility with human and animal tissue while maintaining effective wound treatment.
Implementation Method 1
the starch derivative is covalently bonded to the polymer
Implementation Method 2
Such wound dressings can both absorb wound exudate and moisturize the wound
Implementation Method 3
moisturize the wound, thus accelerating wound healing
Implementation Method 4
releasing moisture into the wound
Data Source
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AI summary
The present invention relates to a process for producing a polymer for medical purposes, in particular for wound treatment. The invention also relates to the polymer obtained by the process itself, as well as its use in medicine and in wound dressings. In principle, the produced polymer provides a hydrated polyurethane hydrogel system or a hydrated polyurethane foam system, in whose cross-linked polymer structure a starch derivative is firmly enclosed, in particular by covalent incorporation. The produced polymers can be more biocompatible, sustainable, and environmentally friendly due to the inclusion of a natural product derivative, namely the starch derivative.