Polymer Phase Diagram Binodal Curves from Condensed Phase Volume Fraction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods face challenges in accurately determining binodal curves for protein and polynucleic acid phase diagrams due to difficulties in measuring condensed phase concentrations, requiring large protein samples and being hindered by fluorophore quenching and optical limitations.
Innovation Solution
A method based on mass and volume conservation principles, using a linear form equation to determine both dilute and condensed phase concentrations by triggering phase separation and measuring volume fractions, allowing for rapid and accurate binodal curve generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional methods are used to determine binodal curves, then phase separation can be observed, but accurate measurement of condensed phase concentrations is difficult due to fluorophore quenching and optical limitations
Solution Approach 1:
The invention extracts and measures only the condensed phase volume fraction through optical methods, separating this measurement from the problematic fluorophore quenching issues that affect conventional concentration measurements. By focusing on volume fraction rather than direct concentration measurement, the method avoids the harmful optical limitations.
Solution Approach 2:
The invention introduces an intermediary measurement approach by using optical properties to determine volume fraction as a intermediate step. This intermediary parameter (volume fraction) serves as a bridge between observable optical signals and the desired concentration information, circumventing direct fluorophore quenching problems.
2Measurement precision
If conventional methods are used to measure condensed phase concentration, then phase diagram information can be obtained, but large amounts of protein samples are required
Solution Approach 1:
The invention creates a simplified model system using microemulsions that replicate the phase separation behavior of the original protein system. By measuring volume fractions in this simplified copying system, the method obtains binodal curve information without requiring large amounts of the original protein sample.
Solution Approach 2:
The invention changes the measurement parameter from direct concentration measurement to volume fraction measurement. This parameter transformation allows determination of binodal curves using smaller sample amounts, as volume fraction can be accurately determined through optical methods on micro-scale systems.
3Loss of information
If multiple experiments are performed to determine both dilute and condensed phase concentrations, then complete phase diagram information can be obtained, but experimental time and complexity increase
Solution Approach 1:
The invention merges the determination of both dilute and condensed phase concentrations into a single experimental measurement. By measuring the volume fraction of the condensed phase in equilibrium, the method simultaneously provides information about both phases through the mass balance relationship, eliminating the need for separate experiments.
Solution Approach 2:
The invention creates a universal measurement approach where a single volume fraction measurement serves multiple purposes: determining condensed phase concentration, calculating dilute phase concentration, and constructing complete binodal curves. This multi-functional measurement reduces experimental time and complexity.
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
Enables precise determination of polymer concentrations in both phases in a single experiment, overcoming the limitations of conventional methods and facilitating complete phase diagram construction.
Implementation Method 1
triggering phase separation of the polymer into a condensed phase and a dilute phase in said system
Data Source
AI summary
The present invention refers to a method for generating a binodal curve of a polymer in a system by determining accurate values of both concentration of dilute and condensed phases of a polymer, in particular, protein or polynucleic acid, under different condition, such as at different temperatures and salt concentrations. Furthermore, the present invention refers to an assay method for identify bioactive compound(s), comprising the inventive method for generating a binodal curve of a polymer in a system.