ELECTRON SPIN RESONANCE SPECTRA OF POLYMETHYL METHACRYLATE AND POLYETHYL METHACRYLATE

A difference was shown to exist in the electron spin resonauce spectra of commercial-grade and laboratorypurified samples of polymethyl methacrylate and polyethyl methacmylate. This difference arises because of the presence of monomer. The spectra of the pure polymers show only partial resolution, while the spectra of samples containing monomer have the nine-line pattern as previously reported. (auth)