Extrusion Polymerization: Catalyzed Synthesis of Crystalline Linear Polyethylene Nanofibers Within a Mesoporous Silica-Reference-Cited by-同舟云学术

Extrusion Polymerization: Catalyzed Synthesis of Crystalline Linear Polyethylene Nanofibers Within a Mesoporous Silica

Published:1999-09-24 Issue:5436 Volume:285 Page:2113-2115
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Kageyama Keisuke¹,Tamazawa Jun-ichi¹,Aida Takuzo¹

Affiliation:

1. Department of Chemistry and Biotechnology, Graduate School of Engineering, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.

Abstract

Crystalline nanofibers of linear polyethylene with an ultrahigh molecular weight (6,200,000) and a diameter of 30 to 50 nanometers were formed by the polymerization of ethylene with mesoporous silica fiber–supported titanocene, with methylalumoxane as a cocatalyst. Small-angle x-ray scattering analysis indicated that the polyethylene fibers consist predominantly of extended-chain crystals. This observation indicates a potential utility of the honeycomb-like porous framework as an extruder for nanofabrication of polymeric materials.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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