Use of functionalized metallocene copolymers from ethylene and polar olefins as compatibilizers for low-density-polyethylene/starch and low-density-polyethylene/dextran 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 functionalized metallocene copolymers from ethylene and polar olefins as compatibilizers for low-density-polyethylene/starch and low-density-polyethylene/dextran blends
|
| Id. |
38184139 |
| Idioma |
inglés
|
| Titulo |
Use of functionalized metallocene copolymers from ethylene and polar olefins as compatibilizers for low-density-polyethylene/starch and low-density-polyethylene/dextran blends |
| Autor(es) |
Domínguez Barceló, Ana María
Quijada, R.
Yazdani-Pedram, M.
|
| Localización |
MACROMOLECULAR MATERIALS AND ENGINEERING 291(8):962-971
1438-7492
http://hdl.handle.net/2250/5276
|
| Versión |
1.0 |
| Estado |
Final
|
| Descripción |
Functionalized metallocene copolymers synthesized from ethylene with 5-hexen-1-ol and ethylene with 10-undecen-1-ol were used as compatibilizers in LDPE/starch and LDPE/dextran blends in order to improve the interfacial adhesion between hydrophobic LDPE and hydrophilic natural polymers. An increase in tensile modulus and a slight decrease in tensile strength was observed when poly [ethylene-co-(10-undecen-1-ol)] was added to a 70:30 wt.-% LDPE/dextran blend, whereas the addition of poly[ethylene-co-(5-hexen-1-ol)] as compatibilizer resulted in obtaining a more rigid material with a slightly higher modulus. Scanning electron microscopy of modified dextran blends containing 3 wt.-% of both compatibilizers showed some degree of phase cocontinuity. Enhanced interfacial adhesion and decrease in particle size of starch was observed when 5 wt.-% of poly [ethylene-co(5-hexen-1-ol)] copolymer was used as the compatibilizer in starch blends. The crystallization temperature of LDPE, determined by DSC, was shifted to a slightly higher temperature as a consequence of the addition of the compatibilizers. The existence of phase segregation was also revealed by thermal analysis when 5 wt.-% of the copolymers were used as blend modifiers.
|
| Palabras clave |
Metallocene
|
| 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.
|
|
|
|
