Uitrustingsdetails
Tekst
Introduction
The hollow fiber spinline is used to produce hollow fiber membranes via a dry-wet immersion precipitation phase separation process. The fibers are spun by co-extruding a polymer solution and an internal coagulant into a water containing coagulation bath.
Principle
The dry-wet spinning process consists of three stages of diffusion-induced phase separation:
1. Solvent evaporation or vapor penetration at the outer
surface of the extruded polymer solution.
2. Immersion precipitation through the inside; non-solvent
from the bore liquid diffuses into the polymer solution.
3. Immersion precipitation via the outer surface when the nascent fibers enters the coagulation bath
Characteristics
Dry-wet spinning of hollow fiber membranes has a number of advantages:
• membrane morphology is tailored by an appropriate
formulation and spin parameters
• pore structure is formed both from outside and inside • typical diameters: 200 - 5000 micrometer
• typical production speed: 5 - 50 m/min
Applications
The hollow fibers are applied in:
• waste water treatment and drinking water production • wine and beer clarification
• gas separation e.g. O2/N2 and biogas upgrading
• (bio)medical e.g. hemodialysis, controlled release
The hollow fiber spinline is used to produce hollow fiber membranes via a dry-wet immersion precipitation phase separation process. The fibers are spun by co-extruding a polymer solution and an internal coagulant into a water containing coagulation bath.
Principle
The dry-wet spinning process consists of three stages of diffusion-induced phase separation:
1. Solvent evaporation or vapor penetration at the outer
surface of the extruded polymer solution.
2. Immersion precipitation through the inside; non-solvent
from the bore liquid diffuses into the polymer solution.
3. Immersion precipitation via the outer surface when the nascent fibers enters the coagulation bath
Characteristics
Dry-wet spinning of hollow fiber membranes has a number of advantages:
• membrane morphology is tailored by an appropriate
formulation and spin parameters
• pore structure is formed both from outside and inside • typical diameters: 200 - 5000 micrometer
• typical production speed: 5 - 50 m/min
Applications
The hollow fibers are applied in:
• waste water treatment and drinking water production • wine and beer clarification
• gas separation e.g. O2/N2 and biogas upgrading
• (bio)medical e.g. hemodialysis, controlled release
Details
| Naam | Hollow fiber spinning machine |
|---|---|
| Fabrikanten | University of Twente |
| Naam | Hollow fiber spinning machine |
|---|
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