Infrared spectroscopic examination of the surfaces of hydrated copoly(ether-urethane-ureas)

1990 ◽  
Vol 23 (20) ◽  
pp. 4357-4362 ◽  
Author(s):  
Paul M. Bummer ◽  
Kristine Knutson
2007 ◽  
Vol 23 (1) ◽  
pp. 54-56 ◽  
Author(s):  
David Weissbrodt ◽  
Ralf Mueller ◽  
Jessica Perrin ◽  
Juergen Backhaus ◽  
Jost B. Jonas

1959 ◽  
Vol 32 (3) ◽  
pp. 854-869 ◽  
Author(s):  
Dieter Hummel

Abstract The IR-spectroscopic identification of soft rubbers may be made by : 1. Breaking down the vulcanizate on a mill followed by boiling with o-dichlorobenzene and then the spectroscopic examination of the polymer recovered from the solution. 2. Thermal degradation of the vulcanizates followed by spectroscopic examination of the liquid and gaseous products of pyrolysis. The rubber base of hard rubbers is determined by spectroscopic examination of the materials obtained by thermal degradation of mixtures of the hard rubbers with zinc dust or powdered calcium.


1991 ◽  
Vol 44 (2) ◽  
pp. 130-139 ◽  
Author(s):  
D.Michael Byler ◽  
Walter V. Gerasimowicz ◽  
Vincent M. Stockette ◽  
Dennis D. Eberl

Author(s):  
A. C. Faberge

Benzylamine tartrate (m.p. 63°C) seems to be a better and more convenient substrate for making carbon films than any of those previously proposed. Using it in the manner described, it is easy consistently to make batches of specimen grids as open as 200 mesh with no broken squares, and without individual handling of the grids. Benzylamine tartrate (hereafter called B.T.) is a viscous liquid when molten, which sets to a glass. Unlike polymeric substrates it does not swell before dissolving; such swelling of the substrate seems to be a principal cause of breakage of carbon film. Mass spectroscopic examination indicates a vapor pressure less than 10−9 Torr at room temperature.


Sign in / Sign up

Export Citation Format

Share Document