Extrusion Polymerization: Catalyzed Synthesis of Crystalline Linear Polyethylene Nanofibers Within a Mesoporous Silica
- 24 September 1999
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 285 (5436), 2113-2115
- https://doi.org/10.1126/science.285.5436.2113
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.Keywords
This publication has 28 references indexed in Scilit:
- Dendrimers: From Design to Application—A Progress ReportAngewandte Chemie International Edition, 1999
- Polyolefin Spheres from Metallocenes Supported on Noninteracting PolystyreneScience, 1998
- Stereospecific propene polymerisation catalysis using an organometallic modified mesoporous silicateChemical Communications, 1997
- Starburst/Cascade Dendrimers: Fundamental building blocks for a new nanoscopic chemistry setAdvanced Materials, 1994
- Longitudinal growth of polymer crystals from flowing solutions. VIII. Mechanism of fiber formation on rotor surfaceJournal of Applied Polymer Science, 1981
- Longitudinal growth of polymer crystals from flowing solutions. VI. Melting behavior of continuous fibrillar polyethylene crystalsJournal of Polymer Science: Polymer Physics Edition, 1979
- Hydrodynamically induced crystallization of polymers from solution. V. Tensile properties of fibrillar polyethylene crystalsJournal of Polymer Science Part C: Polymer Symposia, 1972
- Low-Angle X-Ray Diffraction of Crystalline Nonoriented Polyethylene and Its Relation to Crystallization MechanismsJournal of Applied Physics, 1961
- Hollow Pyramidal Crystals of Polyethylene and a Mechanism of GrowthJournal of Applied Physics, 1960
- Morphology of n‐alkanes, linear polyethylene, and isotactic polypropylene crystallized from solutionJournal of Polymer Science, 1960