Hygroscopic Expansion of Polyester Films

スポンサーリンク

概要

• 論文の詳細を見る

• The hygroscopic expansion of polyethylene terephthalate (PET) and polyethylene 2,6-naphthalate (PEN) films was measured by use of a thermomechanical analyzer at 30, 40 or 50℃. Their initial weight increase was proportional to the square root of time after exposure to moisture, obeying Fick's law; the hygroscopic expansion with time showed the same relationship. The equilibrium moisture content was 1.0×10^<-5>/% RH for both films; the hygroscopic expansion at equilibrium was also about the same for these films. However, the diffusion constant for moisture in PEN films was 1._6×10^<-9> cm^2/s at 30℃ in comparison with 4._8×10^<-8> for PET, although the activation energies were 45 kJ/mol for PET and 41 for PEN.

• 社団法人応用物理学会の論文
• 1992-08-15

著者

• Tomie T

  Teijin Ltd. Hiroshima Jpn

• Tomie Takashi

  Recording Media Research Laboratory Teijin Limited

• Tomie Takashi

  Advanced Film Products Laboratory Teijin Limited

• OUCHI Isuke

  Department of Electrical and Electronic Engineering,Tottori University

• HOSOI Masahiro

  Films Laboratories, Teijin Limited

• Hosoi Masahiro

  Films Laboratories Teijin Limited

関連論文

• The Structure of Co-Cr Films Sputtered onto a Moving Substrate : Magnetism, Magnetic Materials and Devices
• The Structure and Magnetic Properties of Mechanical Alloyed Fe_80(Y_2O_3)_
• The Influence of Adjacent Preformat Pits on Magneto-Optical Signals
• Hygroscopic Expansion of Polyester Films
• Dynamic Mechanical Behaviour of Thin Metal-Layer Coated Polyethylene Terephthalate Films under Torsional Oscillation
• Influence of Injection Molding Process on the Local Fluctuations of Magneto-Optical Signals

スポンサーリンク