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14 January 1993 Glass transition temperature of polymer films forming polymeric lightguides
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Abstract
Using index matched polymer lightguides the optical anisotropy of planar polymer films is measured with an accuracy (Delta) (Nu) <EQ 10-5. The investigation is performed with heated guides in the range of 40 degree(s)C to 110 degree(s)C. An anomaly of (Delta) (Nu) (T) at the glass transition is found. This method may be used for the determination of the glass transition of films in the thickness range of optical lightguides.
© (1993) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Martin Osterfeld, R. Thielmann, Hilmar Franke, P. Ambrovic, and M. D. Lechner "Glass transition temperature of polymer films forming polymeric lightguides", Proc. SPIE 1774, Nonconducting Photopolymers and Applications, (14 January 1993); https://doi.org/10.1117/12.139178
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