Abstract
AbstractObtaining core‐sheath fibers by single‐spinneret electrospinning is a recent and straightforward approach to prepare composite fibers. Fibers of more complex architecture consisting of poly(ethylene oxide) (PEO) core, inner poly(l‐lactide) sheath sd and outer beeswax (BW) sheath may also be obtained using this method. In the present study we report its applicability for a large series of (bio)degradable polyesters such as poly(ε‐caprolactone), poly(d,l‐lactide‐co‐glycolide), poly(butylene succinate), poly(3‐hydroxybutyrate), and poly(l‐lactide‐co‐d,l‐lactide). The fibers have a well‐differentiated PEO core, polyester inner sheath and BW outer sheath. The possibility for targeted location of hydrophilic or hydrophobic substances in the core or in the sheaths of the PEO/polyester/BW fibers has been demonstrated using nanosized zinc oxide with unmodified (hydrophilic) or silanized (hydrophobic) surface. PEO/polyester/BW fibrous materials loaded with a model drug (5‐nitro‐8‐hydroxyquinoline) exhibit antimicrobial activity. The obtained results show that single‐spinneret electrospinning is a novel and versatile method to prepare core‐double sheath composite fibers prospective for various applications such as biomedicine, cosmetics, and food packaging.
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