Coaxial electrospinning
Coaxial electrospinning uses a spinneret with two concentric nozzles to produce core-shell nanofibers — a distinct inner core inside an outer shell. Linari NanoTech supplies modular and sealed coaxial needle kits that integrate with our systems and with third-party setups, so you can encapsulate drugs, protect sensitive cores, and combine materials that cannot be spun on their own.
Why core-shell fibers
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Protect a sensitive core
The shell shields fragile payloads — proteins, growth factors, or drugs that degrade on contact with solvents, oxygen, or moisture.
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Control and sustain release
A shell barrier slows and smooths the release of a drug held in the core, avoiding a sudden burst and extending it over time.
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Spin the unspinnable
A spinnable shell can carry a core that could not form a fiber alone, including some liquids and non-spinnable actives.
Frequently asked questions
What equipment do I need for coaxial electrospinning?
A coaxial spinneret with two concentric nozzles and two independent pumps, one for the core and one for the shell. Our coaxial needle kits add this capability to our systems and to compatible third-party setups.
How do I confirm a core-shell structure?
With imaging — transmission electron microscopy (TEM) is the standard, often combined with a dye or marker in one layer. Surface inspection alone is not enough.