Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Simon Frisk"'
Publikováno v:
ECS Transactions. 50:887-895
Nafion® perfluorosulfonic acid (PFSA) copolymer is considered an industry standard membrane material for use in PEM fuel cell applications. However, Nafion membranes has certain limitations; for example, fuel cell developers/automobile manufacturers
Autor:
Chiara Bertarelli, Simon Frisk, Maria C. Gallazzi, John F. Rabolt, Andrea Bianco, Giuseppe Zerbi
Publikováno v:
Synthetic Metals. 157:276-281
The electrospinning technique is used to obtain functionalized polymeric fibers. Blends of polyethyleneoxide (PEO) and poly-3-dodecylthiophene (P3DDT) have been spun from chloroform solution. The fibers diameter is approximately 1 μm and both polyme
Publikováno v:
Macromolecules. 37:6027-6036
The evolution of the morphology of poly(trimethylene terephthalate) (PTT) samples subjected to different processing conditions was studied using polarized Raman spectroscopy. Three films (amorphous...
Publikováno v:
Applied Spectroscopy. 58:279-286
For the first time, four different methods to determine the degree of molecular orientation from polarized Raman spectroscopy measurements are compared. The great influence of molecular orientation on the properties of polymers has driven the develop
Publikováno v:
Applied Spectroscopy. 56:145-149
A prototype, no-moving-parts, plane array infrared spectrograph (PA-IR) capable of routine spectral acquisition in the 3400 to 2000 cm−1 region has been constructed. The instrument includes a continuous source, Czerney–Turner type monochromator s
Publikováno v:
Applied Spectroscopy. 55:1287-1290
Raman spectra of as-spun fibers produced through electrospinning have shown that high S/N data can be obtained on 50-μm diameter fibers in relatively short collection times (25 s). Using this same instrumental approach, “real time” Raman spectra
Publikováno v:
Applied spectroscopy. 58(7)
Infrared rheo-optics combines dynamic mechanical analysis with infrared spectroscopy to provide molecular level information about the segmental reorientation and the changes in local environment associated with the dynamic deformation of polymers. Up
Publikováno v:
Applied spectroscopy. 57(9)
A new method has been developed to determine an orientation-independent Raman scattered intensity based on various polarized Raman measurements. The equivalent term in infrared spectroscopy is the structural absorbance, which has existed for many yea