The effect of 1,3:2,4-bis-O-(p-methlbenzylbenzylidene)-D-sorbitol(PDTS) on uniaxial elongational viscosity of polypropylene

• 資料種別: 文書・図像類
• タイトル: The effect of 1,3:2,4-bis-O-(p-methlbenzylbenzylidene)-D-sorbitol(PDTS) on uniaxial elongational viscosity of polypropylene
• 著者・編者: Uematsu, Hideyuki; Aoki, Yuji; Sugimoto, Masataka; Taniguchi, Takashi; Koyama, Kiyohito
• 著者標目: Uematsu, Hideyuki; Aoki, Yuji; Sugimoto, Masataka; Taniguchi, Takashi; Koyama, Kiyohito
• 出版事項: Dr. Dietrich Steikopff
• 出版年月日等: 2008
• 出版年（W3CDTF）: 2008
• タイトル（掲載誌）: Rheologica Acta
• 巻号年月日等（掲載誌）: 47 2
• 掲載巻: 47
• 掲載号: 2
• 掲載ページ: 237-242
• 本文の言語コード: eng
• 件名標目: Polypropylene; PDTS; Sol-gel transition; Uniaxial elongational viscosity; Strain softening; Critical stress
• 対象利用者: 一般
• 一般注記: We investigated the dynamic viscoelasticity and elongational viscosity of polypropylene (PP) containing 0.5wt% of 1,3:2,4-bis-O-(p-methylbenzylidene)-D-sorbitol (PDTS). The PP/PDTS system exhibited a sol-gel transition (Tgel) at 193 °C. The critical exponent n was nearly equal to 2/3, in agreement with the value predicted by a percolation theory. This critical gel is due to a three-dimensional network structure of PDTS crystals. The elongational viscosity behavior of neat PP followed the linear viscosity growth function 3η+(t), where η+(t) is the shear stress growth function in the linear viscoelastic region. The elongational viscosity of the PP/PDTS system also followed the 3η+(t) above Tgel, but did not follow the 3η+(t) and exhibited strong strain-softening behavior below Tgel. This strain-softening can be attributed to breakage of the network structure of PDTS with a critical stress (σc) of about 104 Pa.
• 一次資料へのリンクURL: https://u-fukui.repo.nii.ac.jp/?action=repository_action_common_download&item_id=22296&item_no=1&attribute_id=22&file_no=1
• オンライン閲覧公開範囲: 限定公開
• 連携機関・データベース: 国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）; https://irdb.nii.ac.jp
• 提供元機関・データベース: 福井大学 : 福井大学学術機関リポジトリ