Zobrazeno 1 - 10
of 36
pro vyhledávání: '"J. P. Luongo"'
Autor:
J. P. Luongo
Publikováno v:
Applied Spectroscopy. 38:195-199
Deposited films of amorphous silicon nitride, Si3N4, which are used for surface protection or as an insulating interlayer in microelectronic devices, have been studied by IR. The observed changes in the vibrational frequency location of the broad inf
Publikováno v:
Journal of Materials Science. 13:1761-1768
The modified chemical vapour deposition (MCVD) process for making fibre optic preforms uses direct oxidation of SiCl4, together with dopant chlorides to produce core glass. This reaction has been studied by direct infra-red absorption spectrophotomet
Autor:
J. P. Luongo, Harold Schonhorn
Publikováno v:
Journal of Polymer Science: Polymer Chemistry Edition. 13:1363-1372
A variety of techniques were used to follow the thermal degradation of a poly(parabanic acid) (PPA-M). The kinetic data associated with the weight loss as a function of time at elevated temperatures indicates a random initiation process followed by d
Publikováno v:
Macromolecules. 17:1650-1655
Identification chimique et quantification des sites d'oxydation d'echantillons ayant 0,6 a 1,9% d'oxygene. Nature du mouvement de l'eau dans le polymere oxyde
Autor:
J. P. Luongo
Publikováno v:
Journal of Polymer Science: Polymer Chemistry Edition. 12:1203-1208
Transcrystalline films of polyethylene were studied by polarized infrared spectroscopy with varying angles of incidence. The average orientation of the unit cells in the transcrystalline structure was shown to be such that the a axes were predominant
Publikováno v:
Journal of Polymer Science Part A: General Papers. 2:3067-3074
Equal radiation yields of hydrogen are obtained from bulk polyethylene and thin films of solution crystallized polyethylene, with a G value of 4.6. The corresponding value for very thick mats of the solution crystallized material is 3.4. Reasoning fr
Autor:
J. P. Luongo
Publikováno v:
Journal of Polymer Science. 42:139-150
Autor:
J. P. Luongo
Publikováno v:
Journal of Polymer Science Part A-2: Polymer Physics. 10:1119-1123
Poly(vinylidene fluoride) (PVF2) is currently used to form piezoelectric films. The PVF2 molecule can exist in more than one stable conformation and it has electrically polar groups making the polymer amenable to the electrification processes involve
Autor:
R. Salovey, J. P. Luongo
Publikováno v:
Journal of Polymer Science Part A-2: Polymer Physics. 4:997-1008
The transformations of the polymorphic forms of polybutene-1 (I,II,III) were studied by infrared spectroscopy. Attenuated total reflectance spectra demonstrate that the II → I transformation occurs initially and most rapidly on the film surfaces. E
Autor:
J. P. Luongo, A. Fratiello
Publikováno v:
Journal of the American Chemical Society. 85:3072-3075