Sheath-separate-core nanocomposites fabricated using a trifluid electrospinning
2020
Abstract Complex multi-chamber nanostructures are difficult to prepare in a facile and straightforward manner although they are very useful for designing novel functional nanomaterials. In this study, based on the application of electrospun monolithic composites, a new tri-chamber composite nano structure was fabricated using a special trifluid electrospinning. The composite structure had a common shell and two separate cores, and thus was termed as a sheath-separate-core structure. A homemade structural spinneret was developed to assemble an electrospinning system for fabrication. All the three core/sheath sections of the sheath-separate-core structure were monolithic composites consisting of pH-sensitive polymers (i.e. Eudragit® series) and an active ingredient (paracetamol). The sheath-separate-core composite nano structure was able to combine the performances of the three electrospun monolithic nanocomposites to provide a smart controlled release profile according to the physiological characteristics of the digestive tract. The reported protocol opens a new way for designing and producing novel functional nanomaterials based on a complex nanostructure and the related process-structure-performance relationship.
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