Spinnerets & needles
A side-by-side spinneret combines two materials into composite fibers. Polymers with different properties can be joined to create functional nanofibers. Selectively removing one component after spinning can increase membrane porosity and specific surface area.
A parallel-outlet spinneret is another option, as illustrated below.
Parallel outlets and side-by-side fibers: the distinction
Parallel outlets produce a mixed membrane in which two separate fiber populations intermingle.
A side-by-side spinneret produces composite fibers with the two components joined along their length.
Related systems
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