UV-Crosslinked Proteoliposome Membrane for Water Purification
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Solution Overview
Problem
Conventional reverse osmosis membranes face challenges in incorporating proteins due to chemical reagents like trimesoyl chloride, which destroy protein functionality, and proteoliposomes have short lifetimes and low resistance to environmental stresses, while amphiphilic block copolymer-based proteo-vesicles lack consistency.
Innovation Solution
The development of UV-crosslinked protein-incorporated proteoliposomes with a UV-mediated polymerizable structure, using homobifunctional PEG crosslinkers or amine-dendrimers for in situ incorporation into polyamide or cellulose nanomembranes, enhancing mechanical resistance and consistency, and modifying the hydrophilic region for covalent bonding with a support matrix.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional polyamide membranes are used with Schotten-Baumann reaction, then membrane structure is formed, but protein functionality is destroyed due to highly hydrolysing chemicals
Solution Approach 1:
The invention changes the chemical parameters of membrane formation by replacing the Schotten-Baumann reaction with UV-induced polymerization. This allows the membrane to be formed without using highly hydrolysing chemicals like TMC, thereby preserving protein functionality while still achieving the desired membrane structure and properties
Solution Approach 2:
The invention introduces an intermediary approach by using UV light as the activating mechanism instead of chemical catalysts. The UV light mediates the polymerization of proteoliposomes containing embedded proteins, allowing membrane formation without direct chemical exposure that would destroy protein functionality
2Reliability
If natural lipid proteoliposomes are used, then protein incorporation is achieved, but lifetime and resistance to environmental stresses are reduced
Solution Approach 1:
The invention creates a composite material system where natural lipid proteoliposomes are embedded within a UV-cured polymer matrix. This composite structure combines the benefits of natural lipids for protein incorporation with the mechanical strength and environmental stability of the polymer matrix, thereby extending membrane lifetime while maintaining protein functionality
Solution Approach 2:
The UV-cured polymer matrix serves as a protective cushioning layer that shields the embedded proteoliposomes from environmental stresses such as temperature fluctuations, pressure changes, and ionic strength variations. This beforehand protection allows the membrane to withstand harsh conditions while maintaining its structural integrity and protein functionality
3Ease of manufacture
If amphiphilic block copolymer proteo-vesicles are used, then membrane formation is simplified, but batch-to-batch consistency is reduced due to polydiversity
Solution Approach 1:
The invention achieves homogeneity by using monodisperse proteoliposomes with uniform size and composition as the starting material. This uniformity is maintained throughout the UV polymerization process, ensuring that all batches produce membranes with consistent properties and performance characteristics
4Strength
If UV-crosslinked polymerized proteoliposomes are used, then mechanical resistance and consistency are improved, but manufacturing complexity increases
Solution Approach 1:
The invention replaces complex mechanical and chemical assembly processes with UV light-induced polymerization. This substitution simplifies the manufacturing process by using a single-step photopolymerization reaction to form the membrane structure, achieving high mechanical resistance without requiring complex multi-step fabrication 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 resulting membrane exhibits high water selectivity, permeability, and resistance to physical stress, enabling efficient water purification and desalination with low energy requirements, and can withstand harsh conditions.
Implementation Method 1
The synthesized and UV mediated polymerizable liposomes have UV-crosslinkable chemical structure in the hydrophobic area
Implementation Method 2
The resulting membrane has a water bypass through Aquaporin mediated water selective transportation
Data Source
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AI summary
The present invention generally related to a nanofabricated membrane including polymerized proteoliposomes. The nanofabricated membrane is a bio-nano fused selective membrane using protein-incorporated uv-crosslinkable liposomes with a chemical reactive biocompatible interstitial matrix. In the present invention, internally UV-crosslinked protein- incorporated proteolipsomes are used because the proteoliposomes made by natural lipids have a short life time and a weak resistance to the circumstantial stresses such as a high and low temperature, pressure, ionic strength etc. Furthermore, the proteo-vesicles made by amphiphilic block copolymers provide less consistency in accomplishing proper functionality batch to batch because of the inevitable polydiversity of the polymer.