Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/58947
Título: | Unusual extensional behavior of a polystyrene/HIPS blend |
Autor(es): | Barroso, Vitor C. Ribeiro, Sandra P. Maia, João Manuel Luís Lopes |
Palavras-chave: | polystyrene blends uniaxial extension stress relaxation |
Data: | 2003 |
Editora: | Springer Verlag |
Revista: | Rheologica Acta |
Resumo(s): | The present work focuses on the study of the rheological behavior in extension of three different polystyrene melts (a general-purpose polystyrene, GPPS, a high-impact polystyrene, HIPS, and a 50/50 blend of both), in particular the behavior at failure and at rupture in extension that are (ultimately) related with the materials' ability to endure the various stages of extension-dominated processing sequences such as thermoforming. The aim is to try to explore possible synergistic effects arising in extension-dominated flows by means of physically blending the two base materials. The rheological characterization was performed in terms of both the linear and non-linear viscoelastic behavior, in shear and extensional flows. The results show that blending the two materials has important consequences on the extensional behavior, the blend showing a higher degree of extension-thickening than either GPPS or HIPS and that there is indeed a synergistic effect in what regards the rupture and failure behavior. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/58947 |
DOI: | 10.1007/s00397-003-0303-1 |
ISSN: | 0035-4511 |
Arbitragem científica: | yes |
Acesso: | Acesso restrito UMinho |
Aparece nas coleções: | IPC - Artigos em revistas científicas internacionais com arbitragem |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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s00397-003-0303-1.pdf Acesso restrito! | 367,44 kB | Adobe PDF | Ver/Abrir |