New HDPE/MCM41 nanocomposites with improved mechanical performance: synthesis a...

• Autor(es): Bento, A. ; Lourenço, J. P. ; Fernandes, A. ; Pérez, E. ; Cerrada, María L. ; Ribeiro, M. R.
• Data: 2011
• Identificador Persistente: http://hdl.handle.net/10400.1/1254
• Origem: Sapientia - Universidade do Algarve
• Assunto(s): Ethylene polimerisation; MCM-41; Zirconocene; Supported catalyst
• Tipo de Documento: Documento de conferência
• Idioma: Inglês

Descrição

Ordered mesoporous silicas with a channel structure of well - defined geometries and dimensions at nanometer scale are excellent candidates to host intercalation reactions. In recent y ears, our research group has shown that mesoporous silicas of the M41S class combined with metallocene complexes give rise to excellent supported catalysts for ethylene polymerisation. Due to the support characteristics, the reaction is allowed to occur in the channels and in this way hybrid organic - inorganic materials can be prepared within a large range of nanofiller concentration. These HDPE/MCM - 41 nanocomposites exhibit an improved mechanical performance and an easier degradability due to the additional role of MCM - 41 as a promoter for PE degradation [1 ]