Artificial and natural weathering of ABS
R. M. Santos
Departamento de Química, Universidade do Minho, Campus de Gualtar, Braga 4710-057, Portugal
Departamento de Engenharia de Polímeros, Universidade do Minho, Campus de Azurém, Guimarães 4800-058, Portugal
Search for more papers by this authorG. L. Botelho
Departamento de Química, Universidade do Minho, Campus de Gualtar, Braga 4710-057, Portugal
Search for more papers by this authorCorresponding Author
A. V. Machado
Departamento de Engenharia de Polímeros, Universidade do Minho, Campus de Azurém, Guimarães 4800-058, Portugal
Departamento de Engenharia de Polímeros, Universidade do Minho, Campus de Azurém, Guimarães 4800-058, Portugal===Search for more papers by this authorR. M. Santos
Departamento de Química, Universidade do Minho, Campus de Gualtar, Braga 4710-057, Portugal
Departamento de Engenharia de Polímeros, Universidade do Minho, Campus de Azurém, Guimarães 4800-058, Portugal
Search for more papers by this authorG. L. Botelho
Departamento de Química, Universidade do Minho, Campus de Gualtar, Braga 4710-057, Portugal
Search for more papers by this authorCorresponding Author
A. V. Machado
Departamento de Engenharia de Polímeros, Universidade do Minho, Campus de Azurém, Guimarães 4800-058, Portugal
Departamento de Engenharia de Polímeros, Universidade do Minho, Campus de Azurém, Guimarães 4800-058, Portugal===Search for more papers by this authorAbstract
Acrylonitrile-butadiene-styrene (ABS) is a complex copolymer with exceptional importance in technological applications. However, ABS is known to present a high susceptibility to weathering when exposed to UV radiation in the presence of oxygen. In this work, photodegradation of ABS was studied under natural and accelerated conditions. Exposed samples were removed periodically and characterized by several analytical techniques. During both types of weathering chemical modifications occurs mainly at the surface, which affects considerable the optical, mechanical, and rheological properties. The results obtained evidence that during accelerated weathering the formation rate of photodegradation products is higher when compared to natural weathering results. However, chain scission occurs mainly along natural conditions. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2010
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