Agarose-Cellulose Nanocomposite Microspheres for High Flow Chromatography
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional single natural polymer porous gel microspheres, such as those made from agarose or cellulose, face challenges in achieving high rigidity, high flow rate, and high loading capacity simultaneously, making them unsuitable for large-scale industrial chromatography applications.
Innovation Solution
A method for preparing agarose-cellulose nanocomposite porous gel microspheres using a reversed-phase emulsification process, where nanocellulose is dispersed in a water phase with agarose, and then cross-linked with epichlorohydrin under alkaline conditions to enhance mechanical properties and sphericity, resulting in improved flow rate and pressure resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional single natural polymer porous gel microspheres are used, then biological safety and low extractables are achieved, but mechanical properties and rigidity are poor
Solution Approach 1:
The patent combines agarose and cellulose into a composite porous gel microsphere system. The agarose provides biological safety and low extractables, while the cellulose component enhances mechanical strength and rigidity. This composite approach allows simultaneous achievement of both biological safety and improved mechanical properties that neither material could provide alone.
2Ease of manufacture
If conventional single natural polymer porous gel microspheres are used, then ease of manufacture is maintained, but ability to achieve high rigidity, high flow rate, and high loading simultaneously is poor
Solution Approach 1:
The agarose-cellulose composite microsphere combines the manufacturing advantages of natural polymers with enhanced chromatography performance. The composite structure enables simultaneous achievement of high rigidity, high flow rate, and high loading capacity that single polymers cannot provide, while maintaining relative manufacturing simplicity through established natural polymer processing methods.
3Strength
If nanocellulose is used to enhance rigidity, then mechanical strength is improved, but sphericity and suitability for large-scale chromatography deteriorate
Solution Approach 1:
The patent optimizes the parameters of nanocellulose incorporation, including concentration, particle size distribution, and dispersion methods, to achieve the right balance between rigidity enhancement and sphericity maintenance. By carefully controlling these parameters, the composite microspheres maintain good spherical shape while benefiting from the rigidity enhancement provided by nanocellulose.
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 agarose-cellulose nanocomposite porous gel microspheres exhibit enhanced maximum flow rate and pressure resistance, and when modified with ligands, they demonstrate improved dynamic binding capacity for large-scale separation and purification of biological macromolecules, addressing the limitations of conventional chromatography media.
Implementation Method 1
agarose is dissolved in a dispersion of nanocellulose as a water phase
Implementation Method 2
0.01 to 10 parts by weight of nanocellulose are dispersed in 100 parts by weight of water to form a uniform dispersion
Implementation Method 3
The water phase obtained in step S1 is poured into an oil phase heated to 50-90° C., mechanically stirred and emulsified for 10-30 minutes
Implementation Method 4
the emulsion is cooled at a rate of 2° C. per minute to below 20° C. to gel the droplet of the water phase
Implementation Method 5
the emulsion is cooled at a rate of 2° C. per minute to below 20° C. to gel the droplet of the water phase
Implementation Method 6
Epichlorohydrin is used to cross-link agarose and cellulose under alkaline conditions to form the agarose-cellulose nanocomposite porous gel microsphere
Data Source
AI summary
The disclosure provides an agarose-cellulose nanocomposite porous gel microsphere, a preparation method, and an application. In the disclosure, agarose and nanocellulose are compounded to form a unique network structure by using an industrially scalable method, that is, a reversed-phase emulsification method. The maximum flow rate and pressure resistance of the porous gel microsphere are significantly improved. In addition, after the composite porous gel microsphere is modified with a specific ligand, the dynamic binding capacity of the separation target is improved, and the modified composite porous gel microsphere can be used for large-scale separation and purification of biological macromolecules. The disclosure adapts to the development trend of high rigidity, high flow rate, and high loading capacity of the chromatography medium, and is expected to be used as the next-generation chromatography medium with this performance.