RBS AND RAMAN-SPECTROSCOPY STUDY OF HEAT-TREATMENT EFFECT ON PHENOLFORMALDEHYDE RESIN

Authors
EVELYN AL ILA D JENKINS GM
Citation
Al. Evelyn et al., RBS AND RAMAN-SPECTROSCOPY STUDY OF HEAT-TREATMENT EFFECT ON PHENOLFORMALDEHYDE RESIN, Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms, 85(1-4), 1994, pp. 861-863
Citations number
4
Categorie Soggetti
Physics, Nuclear","Nuclear Sciences & Tecnology","Instument & Instrumentation
Journal title
Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms → ACNP
ISSN journal
0168583X
Volume
85
Issue
1-4
Year of publication
1994
Pages
861 - 863
Database
ISI
SICI code
0168-583X(1994)85:1-4<861:RARSOH>2.0.ZU;2-O
Abstract
Phenolformaldehyde resin, which is used to make items of glassy carbon hollow ware, contains residual alkaline catalyst and other impurities . Pyrolysis reduces the concentrations of hydrogen and oxygen during c ondensation and dehydrogenation reactions, which occur between 150 and 1000-degrees-C as the resin is converted to a polymeric glassy carbon . Molded samples heat-treated from 150 to 600-degrees-C and sprayed sa mples heat-treated to 1000 and 2500-degrees-C were studied using Ruthe rford backscattering spectrometry (RBS) and Raman spectroscopy. Raman spectroscopy was used to study the structural changes induced by heat treatment. Raman spectroscopy showed that most carbonization occurred at 500 to 600-degrees-C while the RBS data from resin samples at each temperature showed that oxygen and sodium concentrations were reduced at higher temperatures.