Hollow fiber membrane - Wikipedia
Hollow fiber membranes (HFMs) are a class of artificial membranes containing a semi-permeable barrier in the form of a hollow fiber. Originally developed in the 1960s for reverse osmosis applications, hollow fiber membranes have since become prevalent in water treatment, desalination, cell culture, medicine, and tissue engineering. [ 1 ]
A Comprehensive Review of Hollow-Fiber Membrane Fabrication …
Obtaining hollow-fiber membranes, unlike flat membranes, requires the use of a special installation for their production, the most important component of which is the hollow fiber forming spinneret. This method is most often used in obtaining membranes made of polysulfone, polyethersulfone, polyurethane, cellulose acetate, and its derivatives.
Hollow Fiber Spinning - SpringerLink
2015年1月1日 · Hollow fibers are fabricated by extruding or pumping a dope solution through a spinneret following different methods such as melt spinning, dry spinning, wet spinning, or dry/wet spinning. The spinneret has a tube-in-orifice structure with typical dimensions 0.5–1 mm inner diameter and 0.9–2 mm outer diameter.
Hollow fiber (HF) membrane fabrication: A review on the effects …
2019年2月25日 · Hollow fiber (HF) spinning technologies involves the continuous production of single and multiple fiber via extrusion through the spinneret which then returned to the solid state (via solidification). This results into fibers with varying properties which are dependents on the parameters and process used.
A Comprehensive Review of Hollow-Fiber Membrane Fabrication …
2024年6月3日 · The manufacturing process for hollow-fiber membranes is referred to as “spinning capillary membranes”, a commonly employed technique for producing micro- and ultrafiltration membranes featuring microscopic or nanoscale pores.
Effects of melt spinning parameters on polypropylene hollow fiber ...
2020年1月20日 · In this section, we investigated how spinning conditions influenced spinnability and hollowness of hollow fiber. The polymer melt is extruded through the die and then solidifies under forced air convective cooling, that is, a fan in hollow fiber spinning.
reduce pore collapse. Conventional solvent exchange step before drying consists of immersion of the obtained hollow fibers in one non-solvent or suc-cessive immersion in several non-solvent mix-tures containing components with lower surfac.
Hollow fiber spinning of dual-layer membranes - ScienceDirect
2021年1月1日 · Dual-layer asymmetric hollow fibers, prepared by one-step nonsolvent-induced phase separation of two different polymer dope solutions, can harvest the synergistic advantages of each layer with a more convenient producing process.
Hollow fiber spinning of block copolymers: Influence of spinning ...
2013年3月22日 · We manufactured hollow fiber membranes with nanoscale pores on the external surface by spinning PS-b-P4VP block copolymer solutions through dry/wet phase inversion process. The self-assembly of block copolymers into the ordered morphology via solvent evaporation is coupled with the microdomains alignment through the shear flow in the spinneret.
Hollow Fiber - SpringerLink
2015年1月1日 · A hollow fiber has an inner diameter (d i) and outer diameter (d o), while the thickness (δ) of the hollow fiber wall is the difference between the outer radius and the inner radius. The primary process variables establishing hollow fiber diameters and thickness are spinneret geometry.