Use of monomethyl itaconate grafted poly(propylene) (PP) and ethylene propylene rubber (EPR) as compatibilizers for PP/EPR blends
|
Descargar SCORM
Este recurso ha sido solicitado 1 veces (0 veces en los últimos 31 días).
Para poder solicitar este recurso debe identificarse como usuario de la biblioteca
|
| |
Ver
Detalles del recurso
|
|
|
Use of monomethyl itaconate grafted poly(propylene) (PP) and ethylene propylene rubber (EPR) as compatibilizers for PP/EPR blends
|
| Id. |
38184148 |
| Idioma |
inglés
|
| Titulo |
Use of monomethyl itaconate grafted poly(propylene) (PP) and ethylene propylene rubber (EPR) as compatibilizers for PP/EPR blends |
| Autor(es) |
Yazdani-Pedram, M.
Quijada, R.
López Manchado, M. A.
|
| Localización |
MACROMOLECULAR MATERIALS AND ENGINEERING 288(11):875-885
1438-7492
http://hdl.handle.net/2250/5285
|
| Versión |
1.0 |
| Estado |
Final
|
| Descripción |
The use of grafted poly(propylene) (PP) and a random copolymer of ethylene and propylene (EPR) with an itaconic acid derivative, monomethyl itaconate (MMI), as compatibilizer for PP/EPR blends was analyzed. The grafting reaction was performed at 190degreesC in a Brabender Plasticorder. 2,5-Dimethyl-2,5-bis (tert-butylperoxy) hexane was the radical initiator for the functionalization of PP, dicumyl peroxide was used as the radical initiator for the modification of EPR. The obtained degree of grafting was 1.5% by weight for PP and 1.2% by weight for EPR. The compatibilizing effect of modified polymers on the processability, morphology, and mechanical and thermal properties of the blends was of interest. Compatibilization substantially improved the toughness and deformation with little effect on the tensile modulus and strength. Moreover, this effect was particularly evident when both polymeric phases were grafted. Regarding compatibilization, the viscosity of the blends increased due to the high interfacial adhesion. Morphological studies showed that the particle size of the rubbery phase was reduced and the dispersion in the matrix improved by compatibilization. The grafted polymers behaved as nucleating agents, accelerating the PP crystallization.
|
| Palabras clave |
Electron paramagnetic resonance (EPR)
|
| Tipo de recurso |
Article
|
| Tipo de Interactividad |
Expositivo
|
| Nivel de Interactividad |
muy bajo
|
| Audiencia |
Estudiante
Profesor
Autor
|
| Estructura |
Atomic |
| Coste |
no
|
| Copyright |
sí
|
| Requerimientos técnicos |
Browser: Any
|
| Fecha de contribución |
14-nov-2008 |
| Contacto |
|
|
|
|
|
Valoración de los usuarios
No hay ninguna valoración para este recurso. Sea el primero en
valorar este recurso.
|
|
|
|
