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Título
SEBS as an effective nucleating agent for polystyrene foams
Año del Documento
2021
Editorial
MDPI
Descripción
Producción Científica
Documento Fuente
Polymers, 2021, vol. 13, n. 21, 3836
Resumo
Different percentages of an elastomeric phase of styrene-ethylene-butylene-styrene (SEBS) were added to a polystyrene (PS) matrix to evaluate its nucleating effect in PS foams. It has been demonstrated that a minimum quantity of SEBS produces a high nucleation effect on the cellular materials that are produced. In particular, the results show that by adding 2% of SEBS, it is possible to reduce the cell size by 10 times while maintaining the density and open cell content of the foamed materials. The influence of this polymeric phase on the glass transition temperature (Tg) and the shear and extensional rheological properties has been studied to understand the foaming behavior. The results indicate a slight increase in the Tg and a decrease of the shear viscosity, extensional viscosity, and strain hardening coefficient as the percentage of SEBS increases. Consequently, an increase in the density and a deterioration of the cellular structure is detected for SEBS amounts higher than 3%
Materias (normalizadas)
Procesos químicos
Física de la materia condensada
Materias Unesco
3303.03 Procesos Químicos
2210 Química Física
Palabras Clave
Organic phases
SEBS
Cellular materials
Polystyrene
Fases orgánicas
Materiales celulares
Poliestireno
Revisión por pares
SI
Patrocinador
Ministerio de Ciencia e Innovación y Ministerio de Universidades (RTI2018-098749-B-I00)
Junta de Castilla y León (VA202P20)
Junta de Castilla y León (VA202P20)
Version del Editor
Propietario de los Derechos
© 2021 The Authors
Idioma
eng
Tipo de versión
info:eu-repo/semantics/publishedVersion
Derechos
openAccess
Aparece en las colecciones
Arquivos deste item
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