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

Polymers

Gunnar Seide¹  Christian-Alexander Bunge²  Wilhelm Steinmann³  Thomas Vad³  Benjamin Weise³  Thomas Gries³  Markus Beckers³  Benjamin Mohr³  Emmanuel Kentzinger⁴ 

[1] Faculty of Humanities and Sciences—Biobased Materials, Maastricht University, Urmonderbaan 22, 6167 RD Geleen, The Netherlands;Hochschule für Telekommunikation Leipzig (HfTL), Gustav-Freytag-Str. 43-45, 04277 Leipzig, Germany;Institut für Textiltechnik, RWTH Aachen University, Otto-Blumenthal-Straße 1, 52074 Aachen, Germany;Jülich Centre for Neutron Science (JCNS-2), and Peter Grünberg Institute (PGI-4: Scattering Methods), Forschungszentrum Jülich, D-52425 Jülich, Germany;

关键词: material characterization;    polymer optical fiber;    graded-index profile;    fiber fabrication;    nanostructure;    measurement technique;    scattering;    melt-spinning;   

DOI  :  10.3390/polym9020060

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown