|
|
JAIST Repository >
School of Materials Science >
Articles >
Journal Articles >
Please use this identifier to cite or link to this item:
https://hdl.handle.net/10119/10718
|
| Title: | Effects of Ti oxidation state on ethylene, 1-hexene comonomer polymerization by MgCl_2-supported Ziegler–Natta catalysts |
| Authors: | Senso, Nichapat
Praserthdam, Piyasan
Jongsomjit, Bunjerd
Taniike, Toshiaki
Terano, Minoru |
| Keywords: | Ziegler–Natta catalyst
Titanium oxidation state
Polyethylene
Ethylene/1-hexene copolymerization
Ethylene polymerization |
| Issue Date: | 2011-08-31 |
| Publisher: | Springer |
| Magazine name: | Polymer Bulletin |
| Volume: | 67 |
| Number: | 9 |
| Start page: | 1979 |
| End page: | 1989 |
| DOI: | 10.1007/s00289-011-0610-0 |
| Abstract: | In this work, the influences of the Ti oxidation state on the catalytic properties of MgCl_2-supported Ziegler–Natta catalysts in ethylene homo- and co-polymerization with 1-hexene. Three catalysts having different Ti oxidation states were synthesized by milling TiCl_4, TiCl_3, or TiCl_2 together with MgCl_2. With these catalysts having different Ti oxidation states, the polymerization conditions such as the Al concentration, temperature, and 1-hexene concentration were varied to figure out their catalytic abilities in ethylene homo- and co-polymerization. The Ti oxidation state affected the catalyst activity largely, having unique dependences on the polymerization conditions. A higher oxidation state led to a higher activity, slightly larger comonomer incorporation, and lower molecular weight as well as its narrower distribution. However, rough characteristics of copolymers were similar among the different Ti oxidation states. |
| Rights: | This is the author-created version of Springer, Nichapat Senso, Piyasan Praserthdam, Bunjerd Jongsomjit, Toshiaki Taniike, Minoru Terano, Polymer Bulletin, 67(9), 2011, 1979-1989. The original publication is available at www.springerlink.com, http://dx.doi.org/10.1007/s00289-011-0610-0 |
| URI: | https://hdl.handle.net/10119/10718 |
| Material Type: | author |
| Appears in Collections: | c10-1. 雑誌掲載論文 (Journal Articles)
|
Files in This Item:
| File |
Description |
Size | Format |
|---|
| 17421.pdf | | 134Kb | Adobe PDF | View/Open |
|
All items in DSpace are protected by copyright, with all rights reserved.
|
