Control over molecular weight and molecular weight distribution of hyperbranched condensation polymers

2008 Fiscal Year Final Research Report

• Project/Area Number: 19550128
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Polymer chemistry
• Research Institution: Kanagawa University
• Principal Investigator: YOKOZAWA Tsutomu Kanagawa University, 工学部, 教授 (80182690)
• Co-Investigator(Kenkyū-buntansha): YOKOYAMA Akihiro 神奈川大学, 工学部, 准教授 (50343637)
• Project Period (FY): 2007 – 2008
• Keywords: ポリアミド / 多分岐高分子 / 重縮合 / リビング重合 / ブロック共重合

Research Abstract

従来、ハイパーブランチポリマーの分子量と分子量は本質的に制御されていなかった。本研究では縮合系AB_2モノマーを開始剤からリビング重合と同様に連鎖重合させて、分子量が制御された分子量分布の狭いハイパーブランチポリマーを合成する手法を確立した。この重合法によって種々のハイパーブランチポリアミド、およびこれらのポリマーと線状ポリマーとのブロック共重合体が精密に合成できるようになった。

Research Products

• [Journal Article] Synthesis of Well-Defined Miktoarm Star Copolymers of Aromatic Polyether and Polystyrene by Chain-Growth Condensation Polymerization and Atom Transfer Radical Polymerization (2009)
  • Author(s): Y. Yamazaki, N. Ajioka, A. Yokoyama, T. Yokozawa
  • Journal Title: Macromolecules 42 Pages: 606-611
  • Peer Reviewed
• [Journal Article] Successive Chain-Growth Condensation Polymerization for the Synthesis of Well-Defined Rod-Rod Diblock Copolymers of Aromatic Polyamide and Aromatic Polyether (2009)
  • Author(s): A. Yokoyama, T. Masukawa, Y. Yamazaki, T. Yokozawa
  • Journal Title: Macromol. Rapid Commun 30 Pages: 24-28
  • Peer Reviewed
• [Journal Article] 精密高分子合成4. 縮合系高分子 (2009)
  • Author(s): 大石智之, 横山明弘, 横澤勉
  • Journal Title: 色材協会誌 82 Pages: 36-42
  • Peer Reviewed
• [Journal Article] Synthesis via Chain-Growth Condensation Polymerization and Gelating Properties of a Variety of Block Copolymers of m- and p-Substituted Aromatic Polyamides (2008)
  • Author(s): T. Ohishi, R. Sugi, A. Yokoyama, T. Yokozawa
  • Journal Title: Macromolecules 41 Pages: 9683-9691
  • Peer Reviewed
• [Journal Article] Synthesis of Well-Defined Rod-Coil Diblock Copolymer of Aromatic Polyether and Polyacrylonitrile by Chain-Growth Condensation Polymerization and Atom Transfer Radical Polymerization (2008)
  • Author(s): N. Ajioka, A. Yokoyama, T. Yokozawa
  • Journal Title: Macromol. Rapid Commun. 29 Pages: 665-671
  • Peer Reviewed
• [Journal Article] Reaction Control in Condensation Polymerization (2008)
  • Author(s): T. Yokozawa, N. Ajioka, A. Yokoyama
  • Journal Title: Adv. Polym. Sci. 217 Pages: 1-77
  • Peer Reviewed
• [Journal Article] Synthesis of Well-Defined Polystyrene-b-Polyether Using an Orthogonal Initiator for Atom Transfer Radical Polymerization and Chain-Growth Condensation Polymerization (2007)
  • Author(s): N. Ajioka, Y. Suzuki, A. Yokoyama, T. Yokozawa
  • Journal Title: Macromolecules 40 Pages: 5294-5300
  • Peer Reviewed
• [Journal Article] Synthesis of Controlled Rod-Coil Block Copolymers by Macroinitiator Method: Chain-Growth Polycondensation for Aromatic Polyamide from Polystyrene Macroinitiator (2007)
  • Author(s): S. Kim, Y. Kakuda, A. Yokoyama, T. Yokozawa
  • Journal Title: J. Polym. Sci., Part A : Polym. Chem. 45 Pages: 3129-3133
  • Peer Reviewed
• [Journal Article] 縮合系高分子アーキテクチャーとその自己組織化 (2007)
  • Author(s): 味岡直己, 横山明弘, 横澤勉
  • Journal Title: 高分子論文集 64 Pages: 907-921
  • Peer Reviewed
• [Journal Article] Converting Step-Growth to Chain-Growth Condensation Polymerization (2007)
  • Author(s): A. Yokoyama, T. Yokozawa
  • Journal Title: Macromolecules 40 Pages: 4093-4101
  • Peer Reviewed
• [Journal Article] Synthesis of Well-Defined Hyperbranched Polyamides by Condensation Polymerization of AB_2 Monomer through Changed Substituent Effects
  • Author(s): Y. Ohta, S. Fujii, A. Yokoyama, T. Furuyama, M. Uchiyama, T. Yokozawa
  • Journal Title: Angew. Chem. Int. Ed. (in press)
  • Peer Reviewed
• [Journal Article] Synthesis of Well-Defined Polybenzamide-b-Polystyrene by Combination of Chain-Growth Condensation Polymerization and RAFT Polymerization
  • Author(s): T. Masukawa, A. Yokoyama, T. Yokozawa
  • Journal Title: Macromol. Rapid Commun. (in press)
  • Peer Reviewed
• [Presentation] AB_2モノマーの連鎖縮合重合による分子量と分子量分布の制御されたハイパーブランチポリアミドの合成 (2008)
  • Author(s): 太田佳宏, 上條祐介, 横山明弘, 横澤勉
  • Organizer: 第57回高分子討論会
  • Place of Presentation: 大阪(1G19)
  • Year and Date: 20080000
• [Presentation] Control over Molecular Weight and Polydispersity of Hyperbranched Polyamides (2008)
  • Author(s): T. Yokozawa
  • Organizer: Polycondensation 2008
  • Place of Presentation: Tokyo(IL03)
  • Year and Date: 20080000
• [Presentation] Synthesis of a Variety of Hyperbranced Polyamides with Low Polydispersity by Chain-Growth Condensation Polymerization of AB_2,Monomers (2008)
  • Author(s): Y. Ohta, Y. Kamijyo, A. Yokoyama, T. Yokozawa
  • Organizer: Polycondensation 2008
  • Place of Presentation: Tokyo(P27)
  • Year and Date: 20080000
• [Presentation] Synthesis of Well-Definded Hyperbranched Polyamides By Chain-Growth Condensation Polymerization of AB_2 Monomer (2008)
  • Author(s): Y. Ohta, A. Yokoyama, T. Yokozawa
  • Organizer: The 3rd Joint International Symposium on Macrocyclic & Supramolecular Chemistry (III ISMSC)
  • Place of Presentation: Las Vegas
  • Year and Date: 20080000
• [Presentation] 種々のAB_2 モノマーの連鎖縮合重合による分子量分布の狭いハイパーブランチポリアミドの合成 (2008)
  • Author(s): 上條祐介, 太田佳宏, 横山明弘, 横澤勉
  • Organizer: 第57回高分子学会年次大会
  • Place of Presentation: 横浜(1F-17)
  • Year and Date: 20080000
• [Presentation] AB_2モノマーの連鎖縮合重合によるハイパーブランチポリアミドの分子量と分子量分布の制御 (2007)
  • Author(s): 太田佳宏, 横山明弘, 横澤勉
  • Organizer: 第56回高分子討論会
  • Place of Presentation: 名古屋(1C16)
  • Year and Date: 20070000
• [Presentation] 多官能性開始剤からのAB_2モノマーの連鎖縮合重合による分子量分布の狭いハイパーブランチポリアミドの合成 (2007)
  • Author(s): 太田佳宏, 横山明弘, 横澤勉
  • Organizer: 第56回高分子学会年次大会
  • Place of Presentation: 京都(2Pa033)
  • Year and Date: 20070000
• [Book] Polycondensation In Macromolecular Engineering(K. Matyjaszewski, Y. Gnanou, L. Leibler, Eds.) (2007)
  • Author(s): T. Yokozawa
  • Total Pages: 295-349
  • Publisher: Wiley-VCH