|
JAIST Repository >
c. マテリアルサイエンス研究科・マテリアルサイエンス系 >
c10. 学術雑誌論文等 >
c10-1. 雑誌掲載論文 >
このアイテムの引用には次の識別子を使用してください:
http://hdl.handle.net/10119/3382
|
| タイトル: | Impact of processing history on rheological properties for branched polypropylene |
| 著者: | Yamaguchi, M
Wagner, M.H |
| キーワード: | rheology
branch
polypropylene |
| 発行日: | 2006-05 |
| 出版者: | Elsevier Science B.V., Amsterdam. |
| 誌名: | Polymer |
| 巻: | 47 |
| 号: | 10 |
| 開始ページ: | 3629 |
| 終了ページ: | 3635 |
| DOI: | 10.1016/j.polymer.2006.03.052 |
| 抄録: | The impact of applied processing history and the post-processing annealing procedure on the rheological properties of long-chain branched polypropylene (B-PP) have been studied intensively as compared with conventional linear polypropylene (L-PP) and low-density polyethylene (LDPE) produced by autoclave process. It was found that drawdown force, as a measure of melt elasticity for B-PP, is greatly depressed even by the short-time processing in an internal batch mixer, whereas the rheological properties of L-PP are unchanged by the processing history. Considering that the drawdown force is recovered to the original value during the post-processing annealing, the phenomenon is ascribed to the conformation change related to the branch structure, i.e., the alignment of long branches to a backbone chain, which is known as “shear modification”. Further, it is demonstrated that the depression of the drawdown force for B-PP is more significant than that for LDPE. Moreover, it is also clarified that B-PP needs a longer post-processing annealing time to recover the drawdown force than LDPE. The difference in the recovery curves during the annealing suggests that B-PP has less relatively “short” long branches. |
| Rights: | Elsevier Ltd., Masayuki Yamaguchi and Manfred H. Wagner, Polymer, 47(10), 2006, 3629-3635. http://www.sciencedirect.com/science/journal/00323861 |
| URI: | http://hdl.handle.net/10119/3382 |
| 資料タイプ: | author |
| 出現コレクション: | c10-1. 雑誌掲載論文 (Journal Articles)
|
このアイテムのファイル:
| ファイル |
記述 |
サイズ | 形式 |
|---|
| S-235.pdf | | 410Kb | Adobe PDF | 見る/開く |
|
当システムに保管されているアイテムはすべて著作権により保護されています。
|
