Fracture phenomena associating with strain-induced density fluctuations in glassy polymers

2008 Fiscal Year Final Research Report

• Project/Area Number: 19550206
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Polymer/Textile materials
• Research Institution: Kyoto University
• Principal Investigator: TAKENAKA Mikihito Kyoto University, 大学院・工学研究科, 講師 (30222102)
• Co-Investigator(Kenkyū-buntansha): HASEGAWA Hirokazu 京都大学, 大学院・工学研究科, 教授 (60127123)
• Project Period (FY): 2007 – 2008
• Keywords: 高分子材料物性

Research Abstract

ガラス状高分子のガラス転移点以下では、密度揺らぎは大きな応力の空間不均一性を生じさせる。その密度に伴う応力の空間不均一性が、延伸下においては粘弾性効果によって密度揺らぎの誘起が起こり、それが非線形粘弾性現象の発現および破壊現象が起こることが明らかになった。

Research Products

• [Journal Article] Ultra Small-Angle X-ray Scattering Studies on Structural Changes in Micrometers Upon Uniaxial Stretching of Segmented Polyurethaneureas (2009)
  • Author(s): Shinichi Sakurai, Hidekazu Yoshida, Fumio Hashimoto, Miaki Shibaya,Hideaki Ishihara, Nori Yoshihara, Shotaro Nishitsuji, Mikihito Takenaka
  • Journal Title: Polymer 50 Pages: 1566-1576
• [Journal Article] Structure analyses of swollen rubber-filler systems by using contrast variation SANS (2009)
  • Author(s): Mikihito Takenaka, Shotaro Nishitsuji, Naoya Amino, Yasuhiko Ishikaka, Daisuke Yamaguchi, Satoshi Koizumi
  • Journal Title: Macromolecules 42 Pages: 308-311
• [Journal Article] Effect of Thermomechanical History on the Crystallization of Poly(ether-block-amide) (2008)
  • Author(s): Bruno Tavernier, Jan Mewis, Peter Van Puyvelde, Mikihito Takenaka, Benoit Ernst, Takeji Hashimoto
  • Journal Title: POLYMER ENGINEERING AND SCIENCE 48 Pages: 2418-2425
• [Journal Article] Directed self-assembly of diblock copolymer thin films on chemically-patterned substrates for defect-free nano-patterning (2008)
  • Author(s): Yasuhiko Tada, Satoshi Akasaka, Hiroshi Yoshida, Hirokazu Hasegawa, Elizabeth Dobisz, Dan Kercher, Mikihito Takenaka
  • Journal Title: Macromolecules 41 Pages: 9267-9276
• [Journal Article] Cylindrical Domains of Block Copolymers Developed via Ordering under Moving Temperature Gradient : Real-Space Analysis (2008)
  • Author(s): Kazuki Mita, Mikihito Takenaka, Hirokazu Hasegawa, and Takeji Hashimoto
  • Journal Title: Macromolecules 41 Pages: 8789-8799
• [Journal Article] Macroscopically oriented lamellar microdomains created by ''cold zone-heating'' method involving OOT (2008)
  • Author(s): Kazuki Mita, Hirokazu Tanaka, Kenji Saijo, Mikihito Takenaka, Takeji Hashimoto
  • Journal Title: Polymer 49 Pages: 5146-5157
• [Journal Article] Stability of Fddd phase in diblock copolymer melt (2008)
  • Author(s): Myung Im Kim, Tsutomu Wakada, Satoshi Akasaka, Shotaro Nishitsuji, Kenji Saijo, Hirokazu Hasegawa, Kazuki Ito, and Mikihito Takenaka a
  • Journal Title: Macromolecules 41 Pages: 7667-7670
• [Journal Article] Ordering of Cylindrical Domains of Block Copolymers under Moving Temperature Gradient : Separation of ∇ T-induced Ordering from Surface-Induced Ordering (2008)
  • Author(s): Kazuki Mita, Hirokazu Tanaka, Kenji Saijo, Mikihito Takenaka, and Takeji Hashimoto
  • Journal Title: Macromolecules 41 Pages: 6787-6792
• [Journal Article] Ordering of Cylindrical Domain of Block Copolymers under Moving Temperature Gradient : Effects of Moving Rate (2008)
  • Author(s): Kazuki Mita, Hirokazu Tanaka, Kenji Saijo, Mikihito Takenaka, and Takeji Hashimoto
  • Journal Title: Macromolecules 41 Pages: 6780-6786
• [Journal Article] Architecture dependence of thermal fluctuation effects on the order-disorder transition of block copolymer melts (2008)
  • Author(s): Ken-ichi Nakamura, Shotaro Nishitsuji, Mikihito Takenaka, Makoto Ohuchi, and Mitsuo Sawamoto
  • Journal Title: Polymer 49 Pages: 2979-2984
• [Journal Article] コントラスト変調小角中性子散乱法による膨潤ゴムの構造解析 (2008)
  • Author(s): 竹中幹人, 西辻祥太郎, 網野直也, 石川泰弘, 山口大輔, 小泉智, 橋本竹治
  • Journal Title: 日本ゴム協会誌 第81巻 Pages: 334-338
• [Journal Article] Shear-SALS Studies of Shear-Induced Concentration Fluctuations and Steady State Viscoelastic Properties (2008)
  • Author(s): Maya Koga, Mikihito Takenaka, Takeji Hashimoto, Tadashi Inoue, and Hiroshi Watanabe
  • Journal Title: J. Chem. Phys 128 Pages: 164911-1-164911-12
• [Journal Article] Alkoxy-Derived Multiscale Porous TiO2 Gels Probed by Ultra-Small-Angle X-Ray Scattering and Small-Angle X-Ray Scattering (2008)
  • Author(s): Junko Konishi, Koji Fujita, Kazuki Nakanishi, Shotaro Nishitsuji, Mikihito Takenaka, Kiyotaka Miura and Kazuyuki Hirao
  • Journal Title: Journal of Sol-Gel Science and Technology 46 Pages: 63-69
• [Journal Article] New Insight into Hierarchical Structures of Carbon Black Dispersed in Polymer Matrices : A Combined Small-angle Scattering Study (2008)
  • Author(s): Mikihito Takenaka
  • Journal Title: Macromolecules 41 Pages: 453-464
• [Journal Article] Ordering Cylindrical Microdomains for Binary Blends of Block Copolymers with Graphoepitaxy (2007)
  • Author(s): Hirokazu Hasegawa, Feng Chen, Satoshi Akasaka, Tomohiro Inoue, Mikihito Takenaka, and Hiroshi Yoshida
  • Journal Title: MACROMOLECULAR RAPID COMMUNICATIONS 28 Pages: 2137-2144
• [Journal Article] Self-Assembling in polymerization processes of N-Isopropylacrylamide (2007)
  • Author(s): Mikihito Takenaka, Naoki Iwase, Shotaro Nishitsuji, and Kazuki Ito
  • Journal Title: Polymer Journal 39 Pages: 1112-1116
• [Journal Article] Cylindrical Domains of Block Copolymers Developed via Ordering under Moving Temperature Gradient (2007)
  • Author(s): Kazuki Mita Hirokazu Tanaka, Kenji Saijo, Mikihito Takenaka and Takeji Hashimoto
  • Journal Title: Macromolecules 40 Pages: 5923-5933
• [Journal Article] Alignment of Cylindrical Microdomains on a Grating Substrate by Binary Blends of Polystyrene-Poly(methyl methacrylate) (2007)
  • Author(s): Feng Chen, Satoshi Akasaka, Tomohiro Inoue, Mikihito Takenaka, Hirokazu Hasegawa, and Hiroshi Yoshida
  • Journal Title: Journal of Photopolymer Science and Technology 20 Pages: 505-510
• [Journal Article] Orthorhombic Fddd Network in Diblock Copolymer Melts (2007)
  • Author(s): Mikihito Takenaka, Tsutomu Wakada, Satoshi Akasaka, Shotaro Nishitsuji, Kenji Saijo, Hirofumi Shimizu, Myung Im Kim, and Hirokazu Hasegawa
  • Journal Title: Macromolecules 40 Pages: 4399-4402
• [Journal Article] Butterfly patterns in crystalline polymers under uniaxial stretch (2007)
  • Author(s): Mikihito Takenaka, Hirofumi Shimizu, and Shotaro Nishitsuji
  • Journal Title: Physical Review E 75 Pages: 061802-1-061802-4
• [Presentation] Stretch-induced density fluctuations in glassy polymers (2008)
  • Author(s): Mikihito Takenaka
  • Organizer: American Polymer Soceity March meeting
  • Place of Presentation: New Orlean, U.S.A.
  • Year and Date: 2008-03-12
• [Presentation] 高分子準希薄溶液の濃度ゆらぎの暖和過程における粘弾性効果について (2007)
  • Author(s): 西辻祥太郎
  • Organizer: 第55回レオロジー討論会
  • Place of Presentation: 金沢大学(角間キャンパス)
  • Year and Date: 2007-11-03
• [Presentation] ガラス状高分子の延伸誘起濃度揺らぎにおける冷却速度依存性 (2007)
  • Author(s): 竹中幹人
  • Organizer: 第55回レオロジー討論会
  • Place of Presentation: 金沢大学(角間キャンパス)
  • Year and Date: 2007-11-01
• [Presentation] ガラス状高分子の延伸誘起濃度揺らぎにおける延伸速度依存性 (2007)
  • Author(s): 竹中幹人
  • Organizer: 第55回レオロジー討論会
  • Place of Presentation: 金沢大学(角間キャンパス)
  • Year and Date: 2007-11-01
• [Presentation] 結晶性高分子材料における延伸による相分離挙動の観察 (2007)
  • Author(s): 荻野 慈子
  • Organizer: 第56回高分子学会討論会
  • Place of Presentation: 名古屋工業大学
  • Year and Date: 2007-09-21
• [Presentation] 高分子系の延伸誘起密度揺らき (2007)
  • Author(s): 竹中幹人
  • Organizer: 第56回高分子学会討論会
  • Place of Presentation: 名古屋工業大学
  • Year and Date: 2007-09-20
• [Presentation] ガラス状高分子の延伸誘起相分離 (2007)
  • Author(s): 竹中幹人
  • Organizer: 第56回高分子学会年次大会
  • Place of Presentation: 京都国際会館会議場
  • Year and Date: 2007-05-30
• [Presentation] Iannirubert-Marrucci モデルを用いた計算機シュミレーションによる高分子準希薄溶液の流動誘起相分離現象のダイナミクスに関する研究 (2007)
  • Author(s): 西辻祥太郎
  • Organizer: 第56回高分子学会年次大会
  • Place of Presentation: 京都国際会館会議場
  • Year and Date: 2007-05-30