Direct production of ultra-high molecular weight polyethylene with oriented crystalline microstructures

被引：23
|
作者：
Fisch, Adriano G. [1 ]
da Silveira, Nauro, Jr. [1 ]
Cardozo, Nilo S. M. [1 ]
Secchi, Argimiro R. [2 ]
dos Santos, Joao H. Z. [3 ]
Soares, Joao B. P. [4 ]
机构：
[1] Univ Fed Rio Grande do Sul, Dept Engn Quim, BR-90040040 Porto Alegre, RS, Brazil
[2] Univ Fed Rio de Janeiro, COPPE, PEQ, Ctr Tecnol G 116, BR-21941972 Rio De Janeiro, RJ, Brazil
[3] Univ Fed Rio Grande do Sul, Inst Quim, BR-91501970 Porto Alegre, RS, Brazil
[4] Univ Waterloo, Dept Chem Engn, Waterloo, ON N2L 3G1, Canada
来源：
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL | 2013年 / 366卷
关键词：
Metallocene; UHMWPE; Sol-gel; Polyethylene; ETHYLENE POLYMERIZATION; SILICA; ZIRCONOCENE; POLYOLEFINS; NANOFIBERS; MORPHOLOGY; EXTRUSION; BEHAVIOR; MODEL;
D O I：
10.1016/j.molcata.2012.08.028
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Titanocene (Cp2TiCl2) was immobilized by entrapping within a silica matrix using a non-hydrolytic sol-gel route. The catalyst was evaluated in ethylene polymerization under different experimental conditions. The catalyst was able to produce fibers of ultra-high molecular weight (UHMWPE) directly from the polymerization process. The polymer showed a well-organized and dense microstructure with evidence of extended-chain crystal formation. This resulting microstructure improved some mechanical properties in comparison with a commercial UHMWPE. (c) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：74 / 83
页数：10
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