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Coaxial Electrospun Thermo-Regulated Sheath/Core Nanofibers with a Comb-Like Polymer Core

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A series of sheath/core composite nanofibers with a core component being composed of poly(diethylene glycol octadecyl ether methacrylate) (poly(C18E2MMA)) and a sheath component being composed of poly(acrylonitrile-co-vinylidene chloride) P(AN-co-VDC) were fabricated by coaxial electrospinning. The morphology and microstructure of the composite nanofibers were observed using field emission scanning electronic microscopy (FESEM) and transmission electronic microscopy (TEM). The phase transition behavior, thermal stability, and crystallizing properties were investigated using differential scanning calorimetry (DSC), thermogravimetric analysis (TGA) and X-ray diffraction (XRD), respectively. The sheath/core composite nanofibers display an appropriate spinnability, better thermal properties as the solution concentrations are 50 wt% and 10 wt% for poly(C18E2MMA) and P(AN-co-VDC), respectively. A composite nanofiber with an average diameter of 158 nm was successfully fabricated. It starts to absorb 69 J/g heat energy at 39.3 °C, and to release 70 J/g heat energy at 34.9 °C. Its thermal stable temperature reaches approximately 280 °C.
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Keywords: COAXIAL ELECTROSPINNING; COMB-LIKE POLYMER; PHASE CHANGE MATERIAL; SHEATH/CORE NANOFIBER; THERMO-REGULATED FIBER

Document Type: Research Article

Publication date: December 1, 2014

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  • Science of Advanced Materials (SAM) is an interdisciplinary peer-reviewed journal consolidating research activities in all aspects of advanced materials in the fields of science, engineering and medicine into a single and unique reference source. SAM provides the means for materials scientists, chemists, physicists, biologists, engineers, ceramicists, metallurgists, theoreticians and technocrats to publish original research articles as reviews with author's photo and short biography, full research articles and communications of important new scientific and technological findings, encompassing the fundamental and applied research in all latest aspects of advanced materials.
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