MEL-DMSO Stripping Composition Surface Tension
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Solution Overview
Problem
Stripping compositions based on DMSO face challenges due to high surface tension and high melting temperature, which hinder their effectiveness and usability, especially at low temperatures.
Innovation Solution
Incorporating mannosylerythritol lipids (MELs) into DMSO compositions to reduce surface tension and lower the melting temperature, thereby enhancing wetting properties and usability in various applications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If DMSO is used as a solvent in stripping compositions, then toxicity is reduced, but surface tension increases preventing good spreading
Solution Approach 1:
A surfactant is introduced as an intermediary substance between DMSO and the substrate surface. The surfactant molecules have hydrophilic heads that interact with DMSO and hydrophobic tails that interact with the substrate, mediating the spreading process and reducing surface tension without compromising the low toxicity benefit of DMSO
Solution Approach 2:
The stripping composition is formulated as a composite system combining DMSO with surfactant molecules. This composite approach allows the mixture to exhibit properties that neither component has alone: DMSO provides low toxicity and solvent power, while the surfactant provides reduced surface tension and improved spreading
2Reliability
If DMSO is used in stripping compositions, then solvent performance is good, but melting temperature is high making use difficult at low temperatures
Solution Approach 1:
The addition of surfactant molecules changes the physical parameters of the DMSO-based composition, specifically lowering the melting temperature through disruption of the DMSO molecular network and reduction of intermolecular forces, while maintaining the solvent performance characteristics
3Ease of operation
If surface tension of DMSO is reduced by adding surfactants, then spreading improves, but composition complexity increases
Solution Approach 1:
The surfactant is used in small, optimized concentrations (typically 0.1-5% w/v) where it performs its surface tension reduction function locally at the liquid-air and liquid-substrate interfaces, while the bulk composition remains predominantly DMSO with its simple properties
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 addition of MELs significantly reduces the surface tension and melting temperature of DMSO, improving the composition's ability to spread and function effectively, even at low temperatures, making it suitable for industrial stripping and phytosanitary uses.
Implementation Method 1
DMSO has a particularly high surface tension, which prevents paint strippers containing DMSO from spreading well on the surface being stripped... adding a particular molecule to DMSO makes it possible to both reduce the surface tension of DMSO
Implementation Method 2
DMSO's melting point of approximately 18.5°C is particularly high, making the use of DMSO-containing paint strippers difficult at low temperatures... adding a particular molecule to DMSO makes it possible to both reduce the surface tension of DMSO and lower its melting point
Data Source
Figure 1~2c
Figure 3
Figure 4~5
AI summary
The present invention relates to a composition comprising at least one lipid of mannosylerythritol (MEL) and dimethyl sulfoxide (DMSO), its method of obtaining and its uses, in particular as a stripping or phytosanitary composition.