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The Preparation of Cyclic Butylene Terephthalate Fibers with Novel Morphology Based on Melt Electrospinning

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Electrospinning of low molecular weight compounds is relatively under-investigated compared to that of polymers. In this paper, cyclic butylene terephthalate oligomers (CBT) were fabricated into a novel fiber structure without any carrier polymer or template via melt electrospinning technique. The electrospun CBT fibers were prepared at 190 °C and characterized by scanning electron microscope (SEM), Fourier transform infrared spectroscopy (FTIR), and differential scanning calorimetry (DSC). SEM images of the CBT fibers showed that they had a mean diameter of 1.8–2.6 μm. In contrast to most electrospun fibers, the CBT electrospun fibers were discontinuous and exhibited a rod-like morphology with an average length of 6.8–7.1 μm. This kind of morphology is rare in products made by electrospinning or electrospraying. In addition, the fiber morphology was not significantly affected by varying the preparation parameters, such as by collection distance or electric voltage value. FTIR and DSC results showed that CBT structure was not changed in the preparation process, but the degree of polymerization of CBT may be changed because of transesterification reaction. Furthermore, the formation mechanism of the discontinuous fibers was also discussed in this work.
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Keywords: Cyclic Butylene Terephthalate Oligomers; Discontinuous Fiber; Melt Electrospinning

Document Type: Research Article

Affiliations: 1: College of Chemistry, Jilin University, Changchun, 130012, P. R. China 2: Key Laboratory of Synthetic Rubber, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China 3: Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, 200032, P. R. China 4: Department of Wound Repair Center, Burn and Plastic Surgery, First Affiliated Hospital of Chinese PLA General Hospital, Beijing, 100037, P. R. China

Publication date: May 1, 2019

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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