Polymerization of N-(fluoro phenyl) maleimides. [. gamma. radiation]

Journal Article · Mon Jan 01 04:00:00 EST 1979 · J. Polym. Sci., Polym. Chem. Ed.; (United States)

DOI:https://doi.org/10.1002/pol.1979.170170109· OSTI ID:6183639

Barrales-Rienda, J M; Ramos, J G; Chaves, M S

Poly(N-aryl maleimide)s of characteristic structures have been synthesized and some of their physical properties studied. The polymerization of N-(fluoro phenyl) maleimides by free-radical initiation in bulk or in solution and by anionic catalyst have been studied to compare the characteristics of polymerization by ..gamma..-ray irradiation with that by free-radical initiation. The polymers were characterized by elemental analysis, intrinsic viscosity, spectroscopy (IR and NMR), programmed thermogravimetric analysis, and x-ray diffraction. Spectra of polymers prepared by radiation and anionic polymerization were nearly identical with those of polymers prepared by free-radical polymerization initiated by azobisisobutyronitrile in bulk or in solution and by the self-initiated thermal polymerization. A variety of reaction conditions were tried, but all attempts to change the molecular structure of the polymers were unsuccessful. Rates of thermal degradation for poly(N-(fluoro phenyl) maleimide)s have been analyzed by using a multiple-heating-rate procedure. Overall activation energy, order of reaction, and frequency factor have been evaluated. 6 figures, 8 tables.

• Research Organization: Inst. de Plasticos y Caucho, Madrid, Spain
• OSTI ID: 6183639
• Journal Information: J. Polym. Sci., Polym. Chem. Ed.; (United States), Journal Name: J. Polym. Sci., Polym. Chem. Ed.; (United States) Vol. 17:1; ISSN JPLCA
• Country of Publication: United States
• Language: English

Related Subjects

38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400600* -- Radiation Chemistry
ACTIVATION ENERGY
ALKALI METAL COMPOUNDS
ALKANES
AROMATICS
ARYL RADICALS
AZO COMPOUNDS
BENZENE
CATALYTIC EFFECTS
CHEMICAL ANALYSIS
CHEMICAL RADIATION EFFECTS
CHEMICAL REACTION KINETICS
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
CHEMISTRY
COHERENT SCATTERING
COMPARATIVE EVALUATIONS
DATA
DATA FORMS
DIFFRACTION
ELECTROMAGNETIC RADIATION
ENERGY
EXPERIMENTAL DATA
FREQUENCY DEPENDENCE
GAMMA RADIATION
GRAVIMETRIC ANALYSIS
HYDROCARBONS
IMIDES
INFORMATION
INFRARED SPECTRA
IONIZING RADIATIONS
ISOLATED VALUES
KINETICS
LITHIUM COMPOUNDS
MAGNETIC RESONANCE
MEDIUM TEMPERATURE
NITRILES
NUCLEAR MAGNETIC RESONANCE
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC FLUORINE COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC POLYMERS
POLYMERIZATION
POLYMERS
QUANTITATIVE CHEMICAL ANALYSIS
RADIATION CHEMISTRY
RADIATION EFFECTS
RADIATIONS
RADICALS
REACTION KINETICS
RESONANCE
SCATTERING
SPECTRA
SYNTHESIS
TEMPERATURE DEPENDENCE
THERMAL ANALYSIS
THERMAL DEGRADATION
THERMAL GRAVIMETRIC ANALYSIS
VISCOSITY
X-RAY DIFFRACTION
YIELDS