Low frequency dielectric behavior of polyamides

Baird, M. E.; Goldsworthy, G. T.; Creasey, C.J.

doi:10.1002/pol.1968.110061011

Cited by 16 publications

(1 citation statement)

References 16 publications

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“…Free charges are hindered in their drift motion and trapped at the boundaries between crystalline and amorphous phase. That causes a strong increase in the dielectric function at lower frequencies and at tempera-75 tures above the glass transition of the amorphous domain [20,23,24]. The time constant of the MWS process is inversely proportional to the conductivity of the material [20,25].…”

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Thermal and corrosion (in)stability of polyamide 6 studied by broadband dielectric spectroscopy

Füllbrandt

Wellert

Klitzing

et al. 2015

Polymer

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mentioning

confidence: 99%

Thermal and corrosion (in)stability of polyamide 6 studied by broadband dielectric spectroscopy

Füllbrandt

Wellert

Klitzing

et al. 2015

Polymer

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Glass Transition Temperatures of Polymers

Andrews

Grulke

1999

The Wiley Database of Polymer Properties

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VI-244 4.6. Poly(benzimidazoles) VI-245 4.7. Poly(benzothiazinophenothiazines) VI-245 4.8. Poly(benzothiazoles) VI-245 4.9. Poly(benzoxazlnes) VI-245 4.10. Poly(benzoxazoles) VI-245 4.11. Poly(carboranes) VI-245 4.12. Poly(dibenzofurans) VI-246 4.13. Poly(dioxoisoindolines) VI-246 4.14. Poly(fluoresceins) VI-247 4.15. Poly(furan tetracarboxylic acid diimides) VI-247 4.16. Poly(oxabicyclononanes) VI-247 4.17. Poly(oxadiazoles) VI-248 4.18. Poly(oxindoles) VI-248 4.19. Poly(oxoisoindolines) VI-248 4.20. Poly(phthalazines) VI-248 4.21. Poly(phthalides) VI-248 4.22. Poly(piperazines) VI-248 4.23. Poly(piperidines) VI-249 4.24. Poly(pyrazinoquinoxalines) VI-249 4.25. Poly(pyrazoles) VI-249 4.26. Poly(pyridazines) VI-249 4.27. Poly(pyridines) VI-249 4.28. Poly(pyromellitimides) VI-249 4.29. Poly(pyrrolidines) VI-250 4.30. Poly(quinones) VI-250 4.31. Poly(quinoxalines) VI-250 4.32. Poly(triazines) VI-252 4.33. Poly(triazoles) VI-252 Table 5. Copolymers VI-252 G. References VI-253 A. INTRODUCTIONAmorphous (noncrystalline) polymeric solids are either glasses or rubbers. A glassy polymer lacks long range order, and is below the temperature at which molecular motions take place on the time scale of the experiment. A rubbery polymer is above the temperature at which molecular motions take place on the time scale of the experiment. The glass transition temperature, T g , is the critical temperature that separates glassy behavior from rubbery behavior. Many amorphous solids, including polymers, organic liquids, biomaterials, some metals and alloys, and inorganic oxide glasses, exhibit glass transition temperatures. The dramatic change in the local movement of polymer chains at T g leads to large changes in a host of physical properties. These properties include density, specific heat, mechanical modulus, mechanical energy absorption, dielectric coefficients, acoustical properties, viscosity, and the rate of gas or liquid diffusion through the polymer, to name a few. Any of these properties can be used, at least in a crude manner, to determine T g . References page VI -253 Specific volume Gl assCrystal l i zati on vol ume change Li qui d

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Investigation of electrical conduction of thermally treated nylon‐6 films

Bhat

Kelkar

1989

Makromol. Chem.

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This paper reports the variation in electrical conduction of thermally treated nylon-6 films. The conductivity measurements were performed in vacuum over the temperature range from room temperature to 80 "C. The samples of the nylon-6 films varying in form and degree of crystallinity were prepared by heat-setting nylon4 films in nitrogen atmosphere at different temperatures for one hour. The results of the variation of conductivity with temperature and the current-voltage characteristics are used to analyze the mechanism of electrical conduction in nylon-6 as well as for the calculations of the activation energy of electrical conduction. A change in the structure of nylon-6 was found to affect both the mechanism of electrical conduction and the activation energy. a) Revised manuscript of September 14, 1988. b, Systematic IUPAC nomenclature: poly( I ,4-piperazinediylsebacoyl).

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Low frequency dielectric behavior of polyamides

Cited by 16 publications

References 16 publications

Thermal and corrosion (in)stability of polyamide 6 studied by broadband dielectric spectroscopy

Thermal and corrosion (in)stability of polyamide 6 studied by broadband dielectric spectroscopy

Glass Transition Temperatures of Polymers

Investigation of electrical conduction of thermally treated nylon‐6 films

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