Preparation of Nano-Polyethylene Fibers and Floccules by Extrusion Polymerization Under Atmospheric Pressure Using the SBA-15-Supported Cp2ZrCl2 Catalytic System
✍ Scribed by Xiaochen Dong; Li Wang; Wenqin Wang; Guohua Jiang; Ying Chen; Zhenrong Zhao; Jianjun Wang
- Publisher
- John Wiley and Sons
- Year
- 2005
- Tongue
- English
- Weight
- 383 KB
- Volume
- 290
- Category
- Article
- ISSN
- 1438-7492
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✦ Synopsis
Abstract
Summary: Nano‐polyethylene fibers and floccules were prepared under atmospheric pressure via ethylene extrusion polymerization in suit, using the SBA‐15‐supported Cp~2~ZrCl~2~ catalytic system. The major morphology units in the samples were fibers and floccules. The diameter of the single nano‐fibers was 120–200 nm. The single nano‐fibers could aggregate to form fiber aggregates and bundles. The number of PE floccules increased with extension of polymerization time, while the melting point of PE with nano‐fibers was little higher than that of common polyethylene.
SEM micrograph of the nano‐polyethylene fibers produced at a polymerization time of 60 min: micro‐fibers and floccule surface morphologies.
magnified imageSEM micrograph of the nano‐polyethylene fibers produced at a polymerization time of 60 min: micro‐fibers and floccule surface morphologies.