Porous Starch-Polysaccharide Composite for Insoluble Liquid Absorption
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing insoluble starch composites are soluble in polar solutions, limiting their use in various applications, and there is a need for insoluble composites with high liquid absorbing capability.
Innovation Solution
A composite material is formed by combining an anionic starch with a cationic polysaccharide like chitosan, using a polar solvent, and expanding the mixture through thermal or microwave treatment to create an insoluble, porous foam capable of absorbing large amounts of liquid.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If starch-based composites are made soluble in polar solutions to improve processing and mixing, then ease of manufacture is improved, but insolvability is required for many applications such as absorbent materials and adhesives
Solution Approach 1:
The patent changes the chemical parameters of starch by introducing cross-linking agents and modifying molecular structure to transform it from a soluble state to an insoluble state while maintaining processing capabilities. This allows the material to be easily manufactured in soluble form during processing, then becomes insoluble in the final product for application reliability.
Solution Approach 2:
The patent creates composite materials by combining starch with other polymers and cross-linking agents to form a multi-component system. This composite approach allows the material to exhibit both ease of manufacture (through soluble components) and reliability (through insoluble cross-linked network structure).
2Reliability
If starch composites are made insoluble to improve application reliability, then insolvability is improved, but liquid absorbing capability is limited
Solution Approach 1:
The patent creates porous structures within the insoluble starch composite matrix, providing pathways and spaces for liquid absorption. The porous architecture allows the material to maintain insolvability while significantly increasing its liquid absorbing capability through capillary action and pore volume.
Solution Approach 2:
The patent combines starch with hydrophilic polymers and cross-linking agents to create a composite system that maintains insolubility while enhancing liquid absorption. The composite structure provides both the insoluble matrix for reliability and the hydrophilic components for liquid absorbing capability.
3Volume of stationary object
If thermal treatment is applied to expand the polymer mixture to create porous foam structure, then porosity and liquid absorbing capability are improved, but energy consumption increases
Solution Approach 1:
The patent utilizes phase transitions of water (liquid to vapor) during thermal treatment to expand the polymer mixture and create porous foam structure. The phase change provides the expanding force needed to create porosity without requiring excessive external energy input, as the system uses its own moisture content to drive expansion.
Solution Approach 2:
The patent applies controlled thermal expansion to expand the polymer network and create porous structure. By optimizing thermal treatment parameters, the material achieves high porosity and liquid absorbing capability while minimizing energy consumption through efficient heat utilization and phase change mechanisms.
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 achieves insolubility in liquid environments while absorbing up to 11 times its own weight and maintaining stability over a wide pH range, offering applications in insulation, packaging, absorbent materials, and biomedical uses.
Implementation Method 1
combining an expandable hydrophilic polymer with an oppositely charged hydrophilic polymer
Implementation Method 2
expanding the mixture using a thermal treatment
Implementation Method 3
capable of absorbing many times its own weight in liquid
Data Source
AI summary
A composite material is formed by combining an expandable polymer having a charge with another polymer having an opposite charge to produce. In particular, the composite material can be prepared by combining the polymers with a medium such as and water, and expanding the mixture using a treatment that expands the mixture to produce, for example, insoluble porous foam-like composite.