A Comparative Study of the Photodegradation of Two Series of Cyclic Olefin Copolymers
A series of commercial cyclic olefin copolymers (COC), namely, ethylene-norbornene (E-NB) and ethylene-tetracyclododecene (E-TD), were processed as thin films with thicknesses of 25 μm by an extrusion process. The photodegradation of neat and formulated films with different metal stearates (Fe, Co,...
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| Format: | Article |
| Language: | English |
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Wiley
2017-01-01
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| Series: | International Journal of Polymer Science |
| Online Access: | http://dx.doi.org/10.1155/2017/1870814 |
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| author | Mario H. Gutiérrez-Villarreal Sara A. Zavala-Betancourt |
| author_facet | Mario H. Gutiérrez-Villarreal Sara A. Zavala-Betancourt |
| author_sort | Mario H. Gutiérrez-Villarreal |
| collection | DOAJ |
| description | A series of commercial cyclic olefin copolymers (COC), namely, ethylene-norbornene (E-NB) and ethylene-tetracyclododecene (E-TD), were processed as thin films with thicknesses of 25 μm by an extrusion process. The photodegradation of neat and formulated films with different metal stearates (Fe, Co, and Mn) was investigated using an ultraviolet (UV) light lamp (340 nm) for a period of 30 days in an accelerated weathering tester model QUV from Q-LAB according to the ASTM D 5208-01 standard practice. Changes in carbonyl index (CI) and tensile properties were used to evaluate the photodegradation of the films and other properties, such as Tg variation by DSC, were also analyzed. The present study reveals that (E-NB) copolymers show higher sensitivity to photodegradation than (E-TD) resins, in the absence and presence of metal stearates. We also find that the Fe salt shows the highest oxidative activity. |
| format | Article |
| id | doaj-art-263d3fa32d564b3eb46674687c0560ab |
| institution | OA Journals |
| issn | 1687-9422 1687-9430 |
| language | English |
| publishDate | 2017-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Polymer Science |
| spelling | doaj-art-263d3fa32d564b3eb46674687c0560ab2025-08-20T02:04:21ZengWileyInternational Journal of Polymer Science1687-94221687-94302017-01-01201710.1155/2017/18708141870814A Comparative Study of the Photodegradation of Two Series of Cyclic Olefin CopolymersMario H. Gutiérrez-Villarreal0Sara A. Zavala-Betancourt1Centro de Investigación en Química Aplicada, Departamento de Procesos de Transformación de Plásticos, Blvd. Enrique Reyna Hermosillo No. 140, Col. San Jose de los Cerritos, 25294 Saltillo, COAH, MexicoCentro de Investigación en Química Aplicada, Departamento de Procesos de Transformación de Plásticos, Blvd. Enrique Reyna Hermosillo No. 140, Col. San Jose de los Cerritos, 25294 Saltillo, COAH, MexicoA series of commercial cyclic olefin copolymers (COC), namely, ethylene-norbornene (E-NB) and ethylene-tetracyclododecene (E-TD), were processed as thin films with thicknesses of 25 μm by an extrusion process. The photodegradation of neat and formulated films with different metal stearates (Fe, Co, and Mn) was investigated using an ultraviolet (UV) light lamp (340 nm) for a period of 30 days in an accelerated weathering tester model QUV from Q-LAB according to the ASTM D 5208-01 standard practice. Changes in carbonyl index (CI) and tensile properties were used to evaluate the photodegradation of the films and other properties, such as Tg variation by DSC, were also analyzed. The present study reveals that (E-NB) copolymers show higher sensitivity to photodegradation than (E-TD) resins, in the absence and presence of metal stearates. We also find that the Fe salt shows the highest oxidative activity.http://dx.doi.org/10.1155/2017/1870814 |
| spellingShingle | Mario H. Gutiérrez-Villarreal Sara A. Zavala-Betancourt A Comparative Study of the Photodegradation of Two Series of Cyclic Olefin Copolymers International Journal of Polymer Science |
| title | A Comparative Study of the Photodegradation of Two Series of Cyclic Olefin Copolymers |
| title_full | A Comparative Study of the Photodegradation of Two Series of Cyclic Olefin Copolymers |
| title_fullStr | A Comparative Study of the Photodegradation of Two Series of Cyclic Olefin Copolymers |
| title_full_unstemmed | A Comparative Study of the Photodegradation of Two Series of Cyclic Olefin Copolymers |
| title_short | A Comparative Study of the Photodegradation of Two Series of Cyclic Olefin Copolymers |
| title_sort | comparative study of the photodegradation of two series of cyclic olefin copolymers |
| url | http://dx.doi.org/10.1155/2017/1870814 |
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