A Comparative Study of the Photodegradation of Two Series of Cyclic Olefin Copolymers

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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Main Authors: Mario H. Gutiérrez-Villarreal, Sara A. Zavala-Betancourt
Format: Article
Language:English
Published: Hindawi Limited 2017-01-01
Series:International Journal of Polymer Science
Online Access:http://dx.doi.org/10.1155/2017/1870814
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spelling doaj-263d3fa32d564b3eb46674687c0560ab2020-11-25T01:41:25ZengHindawi LimitedInternational 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
collection DOAJ
language English
format Article
sources DOAJ
author Mario H. Gutiérrez-Villarreal
Sara A. Zavala-Betancourt
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
author_facet Mario H. Gutiérrez-Villarreal
Sara A. Zavala-Betancourt
author_sort Mario H. Gutiérrez-Villarreal
title 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_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_sort comparative study of the photodegradation of two series of cyclic olefin copolymers
publisher Hindawi Limited
series International Journal of Polymer Science
issn 1687-9422
1687-9430
publishDate 2017-01-01
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.
url http://dx.doi.org/10.1155/2017/1870814
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AT saraazavalabetancourt acomparativestudyofthephotodegradationoftwoseriesofcyclicolefincopolymers
AT mariohgutierrezvillarreal comparativestudyofthephotodegradationoftwoseriesofcyclicolefincopolymers
AT saraazavalabetancourt comparativestudyofthephotodegradationoftwoseriesofcyclicolefincopolymers
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