Surface-Treated Carboxyalkyl Polysaccharides for Hygiene Absorption
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Carboxyalkyl polysaccharides, used as superabsorbent materials in hygiene products, often have insufficient absorption characteristics under load, leading to suboptimal performance in disposable personal hygiene articles.
Innovation Solution
Surface-treated carboxyalkyl polysaccharide particles with a non-crosslinking monovalent acid treated surface, exhibiting high Absorbency Under Load (AUL) values, are produced through a process involving dispersing starch in an alkaline medium, carboxylation, surface treatment, and heating, resulting in particles with enhanced absorption properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If carboxyalkyl polysaccharides are used as superabsorbent materials, then biobased content is improved, but absorption characteristics under load are insufficient
Solution Approach 1:
The patent applies local quality by treating only the surface of carboxyalkyl polysaccharide particles with non-crosslinking monovalent acids, rather than modifying the entire particle. This surface treatment creates a specific functional layer that enhances absorption under load while preserving the biobased nature of the core polysaccharide material. The surface-treated layer provides improved liquid handling capabilities without compromising the biobased content of the bulk material.
Solution Approach 2:
The patent creates a composite structure by combining carboxyalkyl polysaccharide particles with surface-treated layers formed from non-crosslinking monovalent acids. This composite approach integrates the biobased advantages of polysaccharides with the enhanced absorption properties of the surface treatment, achieving both high biobased content and superior absorption characteristics under load.
2Reliability
If surface treatment with non-crosslinking monovalent acid is applied, then absorption efficiency is improved, but process complexity increases
Solution Approach 1:
The patent employs parameter changes by controlling the surface treatment process using non-crosslinking monovalent acids under specific conditions (pH, temperature, concentration) to achieve optimal absorption efficiency. By adjusting these parameters, the process enhances absorption performance while maintaining manageable process complexity through well-defined treatment conditions rather than requiring complex multi-step procedures.
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 surface-treated carboxyalkyl polysaccharides demonstrate improved absorption efficiency, with AUL values of at least 14 g/g at 0.7 psi, suitable for use in hygiene articles and various industrial applications, offering enhanced liquid handling capabilities and biobased content.
Implementation Method 1
surface-treated carboxyalkyl polysaccharides demonstrating improved absorption efficiency, with AUL values of at least 14 g/g at 0.7 psi
Implementation Method 2
Carboxyalkyl polysaccharides have been disclosed as superabsorbent materials
Implementation Method 3
Surface-treated carboxyalkyl polysaccharide particles with a non-crosslinking monovalent acid treated surface
Implementation Method 4
heating the surface-treated carboxyalkyl polysaccharides
Data Source
Figure 1
Figure 2A~2B
Figure 3
AI summary
Surface-treated carboxyalkylated polysaccharides comprising a biobased content of at least 82 % are described herein. The surface-treated carboxyalkylated polysaccharides comprise a CRC of at least 18 g/g, a FSC of at least 26 g/g, and an AUL at 0.7 psi of at least 14 g/g. Processes for the manufacture of surface-treated carboxyalkylated polysaccharides are also described herein.