ISBN 978 1 85449 408 5 (this edition has only been published digitally) This edition is OPEN ACCESS and available from the Aston Research Explorer at publications.aston.ac.uk Bibliographic note © The Author(s) 2017. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original

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... author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. 2. Abstract: In times of increasing resource scarcity, global warming and bio economics, bio based materials get more and more important. In this paper we show the possibilities and limitations of POF based on bio polymers. Two different bio-TPU were investigated regarding their optical potential and processed to fibers. Bio based POF are compared to PMMA based POF. It is shown that the reviewed material Estane ® is not suitable as GI-POF for textile fabric due to missing color neutrality. While it is possible to process the second reviewed material Pearlthane ® , its optical properties are improvable compared to PMMA based POF.