Results 321 to 330 of about 79,151 (345)

Cold drawing of polyethylene terephthalate/polyethylene films

Journal of Applied Polymer Science, 1987
AbstractFilms made from a 77/23 weight percent polyethylene terephthalate/polyethylene blend were stretched using an Instron apparatus. The structures of the samples were examined by methods which included ion beam etching and electron microscopy. The drawn samples exhibited a metallically lustrous and highly reflective surface up to a draw temperature,
Frank E. Karasz, W. Hauffe, U. Ludwig, W. Berger   +3 more
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Polyethylene terephthalate as a capacitor dielectric [PDF]

Electrical Engineering, 1952
Polyethylene terephthalate, or “Mylar,” is a new rival of paper for use as the dielectric in electric capacitors. It appears superior in regard to insulation resistance, temperature coefficient of capacitance, and operating temperature range.
M. C. Wooley, William Mcmahon, G. T. Kohman   +2 more
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Morphology of amorphous polyethylene terephthalate

Journal of Macromolecular Science, Part B, 1983
Abstract A number of years ago the morphology of amorphous polyethylene terephthalate (PET) quenched from the melt at 280°C into ice water and cast from solution was reported [1]. A nodular structure ca. 75 A in diameter was described, the electron diffraction pattern consisting of a single diffuse ring.
H. Miyaji, H. Miyaji, Phillip H. Geil, S. Lee   +3 more
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On the molecular orientation of polyethylene terephthalate

Polymer Science U.S.S.R., 1983
On the basis of the regular way in which the intensities of two components of a complex band at 873 cm−1 (out-of-plane vibrations of CH groups in the benzene ring) change under the effects of deformation and heat applied to PETP filaments, it has been shown that the component at 872 cm−1 is connected with the vibrations of macromolecular fragments in ...
M.V. Shablygin, V. E. Geller, S. A. Baranova, P.M. Pakhomov, B. N. Klyushnik, S.A Gribanov   +5 more
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Molecular motions in polyethylene terephthalate

Journal of Colloid Science, 1963
Abstract The molecular motions in polyethylene terephthalate samples of different crystallinities have been investigated by dynamic mechanical measurements at a frequency of 1 cycle/sec. between −180° and +260°C., and are discussed in connection with nuclear magnetic resonance, dielectric, and X-ray results of other authors.
H. Breuer, K.H. Illers
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Diffusion of Gases in Polyethylene Terephthalate

Journal of Applied Physics, 1963
Diffusion of helium, oxygen, nitrogen, argon, carbon dioxide, and methane in glassy and rubbery polythylene terephthalate has been studied in the range 25° to 130°C. Despite the abnormal solution behavior of these gases in the glassy polymer, the diffusion process is evidently normal and Fickian: Correlation of solubility constants for oxygen and ...
Wolf R. Vieth, James A. Barrie, Alan S. Michaels   +2 more
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Aminolysis of polyethylene terephthalate waste

Polymer Degradation and Stability, 2006
Polyethylene terephthalate in the form of waste fibres and disposable soft drink bottles was subjected to depolymerisation through aminolysis using excess of ethanolamine in the presence of different simple chemicals, namely glacial acetic acid, sodium acetate and potassium sulphate, as catalysts.
Sanjeev R. Shukla, Ajay M. Harad
openaire   +2 more sources

Polycarbonate/ Polyethylene Terephthalate Alloy

1995
Publisher Summary This chapter focuses on the adoptability of ultrasonic welding in context to polycarbonate/polyethylene terephthalate (PC/PET) alloy. A few key highlights the results of impact modified PC/PET blend that can successfully be welded under a broad range of welding conditions.
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Deformation bands in polyethylene terephthalate

Journal of Physics D: Applied Physics, 1968
A study has been undertaken of the change in optical extinction direction in deformation bands produced by tensile and shear tests on oriented polyethylene terephthalate sheets. The change in extinction direction has been related theoretically to the band direction, the shear strain and the normal strain.
R. A. Duckett, N Brown, I. M. Ward
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Electroluminescence in Polyethylene Terephthalate

Japanese Journal of Applied Physics, 1974
Kwan-chi Kao, Katsumi Yoshino, Keiichi Kaneto, Yoshio Inuishi   +3 more
openaire   +2 more sources