caa a22 4500 467919429 CHVBK 20180406152912.0 cr unu---uuuuu 170328e20060701xx s 000 0 eng 10.1007/s00706-006-0491-3 doi (NATIONALLICENCE)springer-10.1007/s00706-006-0491-3 Structure-Infrared Optical Property-Correlations of C,O,H-Polymers for Transparent Insulation and Greenhouse Applications [Elektronische Daten] [Gernot Wallner, Gernot Oreski] Summary.: In this paper an understanding of the physical relationships between the material structure and the temperature dependent infrared optical properties of different transparent polymer films for solar applications is described. The infrared optical properties are relevant for the heat transport of e.g. greenhouse and transparent insulation structures. The properties were determined based on infrared transmittance measurements and the assumption of a constant index of refraction from the visible range. To establish structure-property-correlations molecular structure parameters such as the concentration of carbon-oxygen single bonds and carbon-hydroxyl groups were determined. For 50 μm thick films a good correlation between the concentration of the functional carbon-hydroxyl and the carbon-oxygen group and the infrared optical thickness as well as the hemispherical emittance was found. This correlation fits well for high and low infrared radiation absorbing polymeric materials consisting of carbon, hydrogen, and oxygen atoms. The carbon-hydroxyl group appears to be slightly more effective than the carbon-oxygen single bond. Interestingly, the correlation works for polymers with aromatic (PC, PET) and aliphatic (PMMA, CTA, ethylene copolymers) groups. Springer-Verlag, 2006 Keywords. Ethylene copolymer nationallicence Infrared optical properties nationallicence Transparent insulation nationallicence Polymer film nationallicence Greenhouse nationallicence Wallner Gernot Institute of Materials Science and Testing of Plastics, University of Leoben, Leoben, Austria aut Oreski Gernot Polymer Competence Center Leoben GmbH, Leoben, Austria aut Monatshefte für Chemie / Chemical Monthly Springer-Verlag 137/7(2006-07-01), 899-910 0026-9247 137:7<899 2006 137 706 https://doi.org/10.1007/s00706-006-0491-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00706-006-0491-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Wallner Gernot Institute of Materials Science and Testing of Plastics, University of Leoben, Leoben, Austria aut NATIONALLICENCE 700 1- Oreski Gernot Polymer Competence Center Leoben GmbH, Leoben, Austria aut NATIONALLICENCE 773 0- Monatshefte für Chemie / Chemical Monthly Springer-Verlag 137/7(2006-07-01), 899-910 0026-9247 137:7<899 2006 137 706 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer