Preparation of ultrahigh molecular weight ethylene/1-octene block copolymers using ethylene pressure pulse feeding policies

文献情報

出版日 2015-04-07

DOI 10.1039/C5PY00380F

インパクトファクター 5.582

著者

Weifeng Liu, Andrew Toye Ojo, Wen-Jun Wang, Hong Fan, Bo-Geng Li, Shiping Zhu

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要旨

Ethylene pressure pulse feeding policies were employed in ethylene/1-octene living copolymerization with fluorinated FI-Ti catalyst. Ultrahigh molecular weight ethylene/1-octene block copolymers having hard-soft diblock structure and hard-soft-hard triblock structure were obtained. The soft blocks had high 1-octene content, while the hard blocks were mainly ethylene. The blocky structures were confirmed by NMR and high temperature GPC analyses. DSC measurements also showed that the hard blocks exhibited a high level of crystallinity and the soft blocks gave good low temperature flexibility. The block copolymers thus prepared have potential in thermoplastic elastomer applications.

掲載誌

Polymer Chemistry

CiteScore: 8.6

自己引用率: 7.3%

年間論文数: 457

Polymer Chemistry welcomes submissions in all areas of polymer science that have a strong focus on macromolecular chemistry. Manuscripts may cover a broad range of fields, yet no direct application focus is required.

Preparation of ultrahigh molecular weight ethylene/1-octene block copolymers using ethylene pressure pulse feeding policies

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