Morphology and dynamic mechanical spectra of crystalline copolymers of ethylene and acenaphthylene

1976 ◽  
Vol 16 (7) ◽  
pp. 507-509 ◽  
Author(s):  
F. E. Bailey ◽  
E. R. Walter
Keyword(s):  
Dynamic Mechanical ◽  
Mechanical Spectra

The origin of a new transition in dynamic mechanical spectra of multilayer polymeric composite

Polymer ◽  
2012 ◽  
Vol 53 (12) ◽  
pp. 2519-2523 ◽  
Author(s):  
Jiabin Shen ◽  
Jiang Li ◽  
Shaoyun Guo
Keyword(s):  
Polymeric Composite ◽  
Dynamic Mechanical ◽  
Mechanical Spectra

Ductile Tantalum Oxide Protective Coatings

1984 ◽  
Vol 40 ◽  
Author(s):  
Hani L. Rizkalla ◽  
Stephen T. Wellinghoff
Keyword(s):  
Electron Beam ◽  
Tensile Strain ◽  
Protective Coatings ◽  
Tantalum Oxide ◽  
Atomic Motion ◽  
Polymer Substrates ◽  
Dynamic Mechanical ◽  
The Face ◽  
Mechanical Spectra ◽  
Similar Dynamic

AbstractAmorphous, anodic Ta2O5 films of 400 A thickness deposited on deformable polymer substrates deformed by microshear banding even at 5–10% tensile strain. Electron beam evaporated Ta2O5 (EBE) were considerably more brittle in tension on the same substrates, fracturing at strains less than 1%. Even though both films were amorphous to electron diffraction the EBE vibrational spectrum in the Ta2O5 region (900 cm-1 - 400 cm-1) was more reminiscent of thermally oxidized material that appears to have greater microstructural order. A significant dynamic mechanical peak was observed at 60–90°C for both Al and Ta foils coated with either anodic or EBE Ta2O5 films. This process was assigned to relaxation of interfacial stresses induced by atomic motion in the oxide in this temperature range. In the face of the rather similar dynamic mechanical spectra we suspect that the presence of a greater Packing heterogeneity might explain the greater brittleness of the EBE films.

Dynamic mechanical spectra of poly(itaconic acid esters) containing phenyl and cyclohexyl rings

Polymer ◽  
1975 ◽  
Vol 16 (12) ◽  
pp. 869-872 ◽  
Author(s):  
J.M.G. Cowie ◽  
I.J. McEwen ◽  
J. Veličković
Keyword(s):  
Itaconic Acid ◽  
Dynamic Mechanical ◽  
Mechanical Spectra ◽  
Acid Esters

The proper glass transition temperature of amorphous polymers on dynamic mechanical spectra

2013 ◽  
Vol 116 (1) ◽  
pp. 447-453 ◽  
Author(s):  
Zhouyue Lei ◽  
Wang Xing ◽  
Jinrong Wu ◽  
Guangsu Huang ◽  
Xiaoan Wang ◽  
...  
Keyword(s):  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Amorphous Polymers ◽  
Dynamic Mechanical ◽  
Mechanical Spectra
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