Degradation of poly(methylmethacrylate) by deep ultraviolet, x-ray, electron beam, and proton beam irradiations
Journal Article
·
· J. Vac. Sci. Technol., B; (United States)
The chemical changes in poly(methylmethacrylate) (PMMA) caused by irradiation with deep ultraviolet (UV), x-ray, electron, and proton beams were studied by gel permeation chromatography, Fourier-transform infrared, and UV spectroscopy. The quantitative analysis of spectroscopic changes (Beer's law) demonstrated a 1:1 correspondence between the disappearance of ester groups and the generation of double bonds in the polymer chain by all types of radiation. The ratio of main chain scission to changes in the number of ester groups and unsaturated bonds was compared to determine the characteristics of degradation of PMMA by the different types of radiation. This ratio for deep UV data was very close to the quantum yield of main chain scission of PMMA as reported in the literature. High-energy radiation was /similar to/0 x more efficient than deep UV in causing main chain scission with removal of fewer ester groups. Protons induced more main chain scission than electrons. X-ray irradiation was the most efficient at causing main chain scission of the four different types of radiation.
- Research Organization:
- Department of Chemistry, Rensselaer Polytechnic Institute, Troy, New York 12180-3590
- OSTI ID:
- 6708664
- Journal Information:
- J. Vac. Sci. Technol., B; (United States), Journal Name: J. Vac. Sci. Technol., B; (United States) Vol. 6:6; ISSN JVTBD
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400600* -- Radiation Chemistry
BARYONS
BEAMS
CHEMICAL ANALYSIS
CHEMICAL BONDS
CHEMICAL RADIATION EFFECTS
CHEMISTRY
COLLOIDS
DISPERSIONS
ELECTROMAGNETIC RADIATION
ELECTRON BEAMS
ELEMENTARY PARTICLES
ESTERS
FERMIONS
GELS
HADRONS
IONIZING RADIATIONS
LEPTON BEAMS
NUCLEON BEAMS
NUCLEONS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PARTICLE BEAMS
PMMA
POLYACRYLATES
POLYMERS
POLYVINYLS
PROTON BEAMS
PROTONS
QUANTITATIVE CHEMICAL ANALYSIS
RADIATION CHEMISTRY
RADIATION EFFECTS
RADIATIONS
ULTRAVIOLET RADIATION
X RADIATION
400600* -- Radiation Chemistry
BARYONS
BEAMS
CHEMICAL ANALYSIS
CHEMICAL BONDS
CHEMICAL RADIATION EFFECTS
CHEMISTRY
COLLOIDS
DISPERSIONS
ELECTROMAGNETIC RADIATION
ELECTRON BEAMS
ELEMENTARY PARTICLES
ESTERS
FERMIONS
GELS
HADRONS
IONIZING RADIATIONS
LEPTON BEAMS
NUCLEON BEAMS
NUCLEONS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PARTICLE BEAMS
PMMA
POLYACRYLATES
POLYMERS
POLYVINYLS
PROTON BEAMS
PROTONS
QUANTITATIVE CHEMICAL ANALYSIS
RADIATION CHEMISTRY
RADIATION EFFECTS
RADIATIONS
ULTRAVIOLET RADIATION
X RADIATION