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Polymers 2017, 9(2), 60; doi:10.3390/polym9020060

Novel Melt-Spun Polymer-Optical Poly(methyl methacrylate) Fibers Studied by Small-Angle X-ray Scattering

1
Institut für Textiltechnik, RWTH Aachen University, Otto-Blumenthal-Straße 1, 52074 Aachen, Germany
2
Faculty of Humanities and Sciences—Biobased Materials, Maastricht University, Urmonderbaan 22, 6167 RD Geleen, The Netherlands
3
Jülich Centre for Neutron Science (JCNS-2), and Peter Grünberg Institute (PGI-4: Scattering Methods), Forschungszentrum Jülich, D-52425 Jülich, Germany
4
Hochschule für Telekommunikation Leipzig (HfTL), Gustav-Freytag-Str. 43-45, 04277 Leipzig, Germany
*
Author to whom correspondence should be addressed.
Academic Editor: Mohamed Khayet
Received: 30 November 2016 / Revised: 6 February 2017 / Accepted: 8 February 2017 / Published: 13 February 2017
(This article belongs to the Special Issue Polymeric Fibers)
View Full-Text   |   Download PDF [5813 KB, uploaded 13 February 2017]   |  

Abstract

The structural properties of novel melt-spun polymer optical fibers (POFs) are investigated by small-angle X-ray scattering. The amorphous PMMA POFs were subjected to a rapid cooling in a water quench right after extrusion in order to obtain a radial refractive index profile. Four fiber samples were investigated with small-angle X-ray scattering (SAXS). The resulting distance-distribution functions obtained from the respective equatorial and meridional SAXS data exhibit a real-space correlation peak indicative of periodic cross-sectional and axial variations in the scattering density contrast. Simple model calculations demonstrate how the structural information contained particularly in the equatorial distance distribution function can be interpreted. The respective results are qualitatively verified for one of the fiber samples by comparison of the model curve with the measured SAXS data. Eventually, the study confirms that the cross-sectional variation of the (scattering-) density is the main reason for the formation of radial refractive-index profiles in the POFs. View Full-Text
Keywords: material characterization; polymer optical fiber; graded-index profile; fiber fabrication; nanostructure; measurement technique; scattering; melt-spinning material characterization; polymer optical fiber; graded-index profile; fiber fabrication; nanostructure; measurement technique; scattering; melt-spinning
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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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MDPI and ACS Style

Beckers, M.; Vad, T.; Mohr, B.; Weise, B.; Steinmann, W.; Gries, T.; Seide, G.; Kentzinger, E.; Bunge, C.-A. Novel Melt-Spun Polymer-Optical Poly(methyl methacrylate) Fibers Studied by Small-Angle X-ray Scattering. Polymers 2017, 9, 60.

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