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Study of piezo-electric elastomer as tactile sensor of a robot

Research Project

Project/Area Number 06555205
Research Category

Grant-in-Aid for Developmental Scientific Research (B)

Allocation TypeSingle-year Grants
Research Field Structural/Functional materials
Research InstitutionOsaka University

Principal Investigator

ADACHI Keiichiro  Osaka University Faculty of Science, Associate Professor, 理学部, 助教授 (00028226)

Co-Investigator(Kenkyū-buntansha) SHIKATA Toshiyuki  Osaka University Faculty of Science Assistant Professor, 理学部, 助手 (10178858)
渡辺 宏  京都大学, 化学研究所, 助教授 (90167164)
小高 忠男  大阪大学, 理学部, 教授 (20027022)
Project Period (FY) 1994 – 1995
Project Status Completed (Fiscal Year 1995)
Budget Amount *help
¥6,000,000 (Direct Cost: ¥6,000,000)
Fiscal Year 1995: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 1994: ¥5,000,000 (Direct Cost: ¥5,000,000)
KeywordsPiezoelectric elastomer / Space-charge / Parallel dipole / Poly (propylene oxide) / Poly (dimethyl siloxane) / Emulsion / Polarization / Stiren-isoprene-stirene triblock copolymer / 圧電性 / エラストマー / ロボット / 触覚センサー / ゴム / 架橋 / 電場 / 架橋高分子 / 複素誘電率 / 複素圧電率 / ブロック共重合 / ポリフォスファゼン
Research Abstract

Aiming an application to the tactile sensor of a robot, we investigated the preparation and physical properties of piezo-electric elastomers. Three types of piezo-electric elastermers were designed namely, space-charge type (SC), parallel dipole type (PD), and rubber-rod-like polymer blend type (RRB). As an SC type elastomer, we used an emulsion of poly (propylene oxide) (PPO) doped with lithiumperchlorate and telechelic poly (dimethyl siloxane) (PDMS) which cross-links by heating. The morphology change under an electric field was first investigated for uncross-linked system. The migration of charged droplets towards the electrodes resulted in a deviation of the distribution of space charge. Based on this observation an electret composed of PPO/PDMS was prepared by cross-linking of PDMS under a strong electric field. The elastomer exhibited piezoelectricity higher than that of poly (vinylidene fluoride). Complicated piezoelectric sygnals were observed depending on the manner of applying stress indicating that the elastomer can distingush objects on which are touching the elastomer. As a PD type piezo-electric elastomer, we used stirene-isoprene-sryrene triblock copolymers (SIS) in which the isoprene block has a dipole aligned in the direction parallel to the chain contour and the stirene block acts as the cross-link. The results of dielectric measurements of SIS indicate that polarization is achieved by jump of the stirene block chains from one domain to the other. To inverstigate the rate of polarization in an RRB type elastomer, we carried out dielectric measurements on poly (hexyl isocyanate) /polyisoprene/toluene ternary system.

Report

(3 results)
  • 1995 Annual Research Report   Final Research Report Summary
  • 1994 Annual Research Report
  • Research Products

    (16 results)

All Other

All Publications (16 results)

  • [Publications] K.Adachi: "Dielectric Spectroscopy on Dilute Blends of Polyisoprene/Polybutadiene : Effects of Matrix Polybutadiene on the Dynamics of Probe Polyisoprene." Macromolecules. 28. 3588-3596 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] K.Mitani: "Ion Conduction in LiSCN/Dimethyformamide/Poly (propylene oxide) System. I. Dissociation Equilibria of LiSCN" J.Polym.Sci.Polym.Phys.Ed.33. 931-946 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] K.Mitani: "Ion Conduction in LiSCN/Dimethyformamide/Poly (propylene oxide) System. II. Mobility of Lithium and Thiocyanate Ions." J.Polym.Sci.Polym.Phys.Ed.32. 947-954 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 西川和仁: "ポリプロピレン/ポリジメチルシロキサン混合系の電場によるモルフォロジー変化" レオロジー学会誌. (発表予定).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 西川和仁: "空間電荷型圧電性エラストマーの調製と電気的性質" レオロジー学会誌. (発表予定).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] K.Adachi: "Dilectric Normal Mode Relaxation of Tetherzed Polyisoprene Chains in Styrene-Isoprene Block Copolymers" Pure Appl.Chemistry. (発表予定).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] K.Adachi: "Dielectric Spectroscopy on Dilute Blends of Polyisoprene/Polybutadiene : Effects of Matrix Polybutadiene on the Dynamics of Probe Polyisoprene." Macromolecules. 28. 3588-3596 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] K.Mitani: "Ion Conduction in LiSCN/Dimethylformamide/Poly (propylene oxide) System. I.Dissociation Equilibria of LiSCN" J.Polym.Sci.Polym.Phys.Ed.33, (4). 937-946 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] K.Mitani: "Ion Conduction in LiSCN/Dimethylformamide/Poly (propylene oxide) System. II.Mobility of Lithium and Thiocyanate Ions." J.Polym.Sci.Polym.Phys.Ed.33, (4). 947-954 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] K.Adachi: "Dielectric Normal Mode Relaxation of Tethered Polyisoprene Chains in Stirene-Isoprene Block Copolymers" Pure Appl.Chem.(in press).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] J.J.Freire: "End-to-end Vector Correlation Function in Many-Chain Systems." Macromolecules. 28. 4747-4749 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] K.Adachi: "Dielectric Spectroscopy on Dilute Blends of Polyisoprene/Polybutadiene:Effects of Matrix Polybutadiene on the Dynamics of Probe Polyisoprene." Macromolecules. 28. 3588-3596 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] K.Mitani: "Ion Conduction in LiSCN/Dimethylformamide/Poly(propylene oxide) System.I.Dissociation Equilibria of LiSCN" J.Polym.Sci.Polym.Phys.Ed.33. 937-946 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] K.Mitani: "Ion Conduction in LiSCN/Dimethylformamide/Poly(propylene oxide) System.II.Mobility of Lithium and Thiocyanate Ions." J.Polym.Sci.Polym.Phys.Ed.33. 947-954 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] O.Urakawa: "Dielectric Normal Mode Relaxation of Poly(lactone)s" Macromolecules. 27. 7410-7414 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 足立桂一郎: "スチレン-イソプレン-スチレントリブロック共重合体の分極過程と圧電性" 日本レオロジー学会誌. (発表予定).

    • Related Report
      1994 Annual Research Report

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Published: 1994-04-01   Modified: 2016-04-21  

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