Effect of crystallinity on CF/PPS performance under weather exposure: Moisture, salt fog and UV radiation

• Autor(a) principal: Batista, Natassia L. [UNESP]
• Data de Publicação: 2018
• Outros Autores: Rezende, Mirabel C., Botelho, Edson C. [UNESP]
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://dx.doi.org/10.1016/j.polymdegradstab.2018.03.008; http://hdl.handle.net/11449/170997
• topic: Carbon fibers; Crystallinity; Environmental degradation; Polymers

The crystalline content of a composite can affect its performance under environmental conditions. The objective of this study is to evaluate the influence of the crystallinity degree of CF/PPS composites to hygrothermal, salt fog and ultraviolet/condensation conditioning. DSC and DMA results, and Young's modulus and ILSS values were used to evaluate the changes in the thermal and mechanical properties of CF/PPS composites after conditioning. The crystallinity degree showed to affect the water uptake and the severity of degradation. Differences up to 40% were found among the mechanical properties values depending on the crystallinity. In the hygrothermal and salt fog conditioning the least crystalline laminates were mostly degraded. In contrast, in the ultraviolet/condensation conditioning the composites with the highest crystalline contents were more affected.