Superabsorbent Polymer Water Removal for Volatile Additive Analysis
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Solution Overview
Problem
Existing methods for analyzing volatile additives in water-based polymer samples are inefficient and result in loss and contamination due to the use of solvents and lengthy drying processes, particularly when using nitrogen purging to remove water.
Innovation Solution
A method involving the use of a superabsorbent polymer in a porous pouch to absorb water from the sample, followed by Py-GC/MS analysis, which allows for quick and accurate concentration and analysis of volatile additives without loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If nitrogen purging is used to remove water from the sample, then water removal is achieved, but volatile additives are lost and analysis time increases
Solution Approach 1:
The patent extracts water from the sample using a superabsorbent polymer material that selectively absorbs water molecules through capillary action and adhesion, separating water from volatile additives without requiring thermal energy input that would cause additive loss
Solution Approach 2:
The patent replaces the thermal-mechanical drying system (heating and nitrogen purging) with a passive absorption system using superabsorbent polymer, eliminating the need for high temperature and extended time while preserving volatile components
2Measurement precision
If conventional extraction methods are used, then components can be extracted, but solvent loss and contamination occur
Solution Approach 1:
The patent introduces a superabsorbent polymer as an intermediary substance that mediates between the water-based sample and the analysis system, absorbing water while leaving volatile additives intact for analysis without introducing solvent contamination
Solution Approach 2:
The patent uses porous superabsorbent polymer material with controlled pore structure that allows selective absorption of water molecules while excluding larger volatile additive molecules, achieving separation without contamination
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 significantly reduces analysis time and minimizes component loss, enabling the detection of volatile additives 2.3 to 2.5 times more effectively than conventional methods, by efficiently removing water from the polymer sample using the superabsorbent polymer.
Implementation Method 1
putting a porous pouch containing a superabsorbent polymer (SAP) into the vial to absorb the water with the superabsorbent polymer
Implementation Method 2
a porous pouch that can be accommodated into the vial and contains a superabsorbent polymer
Implementation Method 3
performing a pyrolysis gas chromatography (Py-GC)/mass spectrometer (MS) analysis by introducing the concentrated polymer sample to the Py-GC/MS
Data Source
AI summary
The present disclosure provides a method for analyzing an additive in a water-based polymer sample, comprising the steps of: (S1) putting the water-based polymer sample containing a polymer, the additive, and water as a solvent into a vial; (S2) putting a porous pouch containing a superabsorbent polymer (SAP) into the vial to absorb the water into the superabsorbent polymer; (S3) removing the porous pouch from the vial and collecting the concentrated polymer sample remaining in the vial; and (S4) performing a pyrolysis gas chromatography (Py-GC)/mass spectrometer (MS) analysis by introducing the concentrated polymer sample to the Py-GC/MS.