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Polymers 2018, 10(6), 680; https://doi.org/10.3390/polym10060680

Centrifugally Spun Recycled PET: Processing and Characterization

1
Internship Student, Kyoto Institute of Technology, Matsugasaki, Sakyo, Kyoto 606-8585, Japan
2
National Key Lab for Polymer and Composite, Faculty of Materials Technology, HoChiMinh City University of Technology, Vietnam National University, HoChiMinh City 700000, Vietnam
3
Doctor’s Program of Materials Chemistry, Graduate school of Science and Technology, Kyoto Institute of Technology, Matsugasaki, Sakyo, Kyoto 606-8585, Japan
4
Faculty of Materials Science and Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyo, Kyoto 606-8585, Japan
*
Author to whom correspondence should be addressed.
Received: 28 May 2018 / Revised: 15 June 2018 / Accepted: 16 June 2018 / Published: 19 June 2018
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Abstract

Centrifugal spinning, which is a high-productivity fiber fabrication technique, was used to produce a value-added product from recycled poly(ethylene terephthalate) (rPET). In the present study, rPET fibers, with fiber diameters ranging from submicron to micrometer in scale, were fabricated by spinning a solution of rPET in a mixture of dichloromethane and trifluoroacetic acid. The influence of the polymer solution concentration (the viscosity), the rotational speed of the spinneret, and the inner diameter of the needles on the formation and morphology and mechanical properties of the fibers were examined through scanning electron microscopy and using a tensile testing machine. The thermal behaviors of fibrous mats with various average diameters were also investigated through differential scanning calorimetry. The smoothest and smallest fibers, with an average diameter of 619 nm, were generated using an rPET solution of 10 wt % under a rotation speed of 15,000 rpm using needles having an inner diameter of 160 μm. The fibrous mats have an average tensile strength and modulus of 4.3 MPa and 34.4 MPa, respectively. The productivity and the mechanical properties indicate that centrifugal spinning is an effective technique to fabricate high-value product from rPET. View Full-Text
Keywords: centrifugal spinning; forcespinning; recycled; poly(ethylene terephthalate); fibers centrifugal spinning; forcespinning; recycled; poly(ethylene terephthalate); fibers
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Vo, P.P.; Doan, H.N.; Kinashi, K.; Sakai, W.; Tsutsumi, N.; Huynh, D.P. Centrifugally Spun Recycled PET: Processing and Characterization. Polymers 2018, 10, 680.

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