Multiblock Copolymer Membranes for Energy-Efficient Chemical Separation
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Solution Overview
Problem
Current membrane technologies face challenges in achieving high flux and selectivity while maintaining energy efficiency and environmental sustainability, particularly in chemical separations such as reverse osmosis, where traditional methods are energy-intensive and inefficient, and lack the ability to effectively separate dilute solutes and thermally-sensitive molecules.
Innovation Solution
Development of self-assembled, chemically-tunable multiblock copolymers to fabricate membranes with monodisperse pores and tailored pore chemistries, enabling precise control over pore size and shape for enhanced separation efficiency and fouling resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If traditional thermal separation methods are used, then separation capability is achieved, but energy consumption is high
Solution Approach 1:
The patent replaces thermal separation mechanisms with membrane-based separation. The membrane structure provides selective transport pathways that separate components based on size and chemical affinity rather than thermal energy input, fundamentally substituting the separation mechanism to reduce energy consumption while maintaining productivity.
Solution Approach 2:
The patent employs porous membrane structures with controlled pore sizes and chemically functionalized pore walls. These porous materials enable selective permeation of target molecules through size exclusion and chemical interactions, achieving separation without the high energy demands of thermal methods.
2Manufacturing precision
If membrane pore size is decreased to improve selectivity, then separation precision increases, but flux decreases
Solution Approach 1:
The patent applies local quality by chemically functionalizing only the pore walls while maintaining a porous structure. The pore walls are decorated with specific chemical groups that provide selective binding sites for target molecules, enabling high selectivity without requiring uniformly small pores throughout the entire membrane, thus preserving flux.
Solution Approach 2:
The patent creates composite membrane structures combining a porous matrix with chemically functionalized surface layers. This composite approach allows the bulk porous structure to maintain high flux while the functionalized surface provides enhanced selectivity through chemical interactions.
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 membranes exhibit improved flow rates and selectivity, allowing for efficient separation of ions and molecules based on size, with tunable pore chemistry that enhances affinity for specific targets or mitigates fouling, leading to more sustainable and energy-efficient chemical separation processes.
Implementation Method 1
Self-assembled, chemically-tunable multiblock copolymers to fabricate membranes with monodisperse pores
Implementation Method 2
allowing for efficient separation of ions and molecules based on size
Implementation Method 3
tunable pore chemistries that can be used to increase affinity for specific targets
Data Source
AI summary
The present invention relates to polymer compositions and their manufacture. Specifically, the invention relates to multiblock polymers and copolymers, their fabrication, modification and/or functionalization and use as membranes or films.