Hafnocene catalyst for polyethylene and its nanocomposites with SBA-15 by in situ polymerization: Immobilization approaches, catalytic behavior and properties evaluation

被引:7
|
作者
Ferreira, Ana E. [1 ,2 ]
Cerrada, Maria L. [3 ]
Perez, Ernesto [3 ]
Lorenzo, Vicente [4 ]
Cramail, Henri [2 ]
Lourenco, Joao P. [1 ,5 ]
Quijada, Raul [6 ,7 ]
Rosario Ribeiro, M. [1 ]
机构
[1] Univ Lisbon, Inst Super Tecn, Ctr Quim Estrutural, Av Rovisco Pais, P-1049001 Lisbon, Portugal
[2] Univ Bordeaux, Lab Chim Polymeres Organ, INP Bordeaux ENSCBP, UMR5629,CNRS, 16 Ave Pey Berland, F-33607 Pessac, France
[3] CSIC, ICTP, Juan de la Cierva 3, Madrid 28006, Spain
[4] Univ Politecn Madrid, ETSI Ind, Grp Invest POLimeros Caracterizac & Aplicac, UA ICTP CSIC, Jose Gutierrez Abascal 2, E-28006 Madrid, Spain
[5] Univ Algarve, CIQA, Fac Ciencias & Tecnol, Campus Gambelas, P-8005139 Faro, Portugal
[6] Univ Chile, Fac Ciencias Fis & Matemat, Dept Ingn Quim & Biotecnol, Casilla 2777, Santiago, Chile
[7] Millennium Nucleus Chem Proc & Catalysis CPC, Santiago, Chile
关键词
Polyethylene; mesoporous SBA-15; Immobilization approaches; Nanocomposites; Crystallinity; Indentation; ETHYLENE POLYMERIZATION; OLEFIN POLYMERIZATION; MECHANICAL-PROPERTIES; GROUP-4; METALLOCENE; LIGAND STRUCTURE; INDENTATION; ZIRCONOCENE; MCM-41; MAO; PERFORMANCE;
D O I
10.1016/j.eurpolymj.2016.10.033
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
A hafnocene catalyst combined with methylaluminoxane (MAO) has been used as catalytic complex for the preparation of a set of polyethylene homopolymers by in situ polymerization under homogenous conditions and of different nanocomposites with mesoporous SBA-15 particles, the latter playing the dual role of catalyst support and nanofiller. Distinct immobilization approaches have been explored for obtainment of these nanocomposites. Moreover, catalytic features, thermal stability, melting and crystallization transitions and mechanical behavior have been evaluated for those materials. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码:298 / 312
页数:15
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