ELECTRON SPIN RESONANCE OF IRRADIATED SOLUTION-CRYSTALLIZED POLYETHYLENE

Journal Article · Tue Dec 31 23:00:00 EST 1963 · J. Polymer Sci., Pt. a

DOI:https://doi.org/10.1002/pol.1964.100020116· OSTI ID:4115242

Salovey, R; Yager, W A

If films containing oriented lamellae of solution-crystallized polyethylene were rotated in an external magnetic field, marked anisotropy in electron spin resonance was noted. When the magnetic field was perpendicular to the chains the spectrum consisted of ten lines with a hyperfine component separation of 15 gauss. When the magnetic field was parallel to the chains, the spectrum was a sextet with a splitting of 34 gauss. These splittings were in fairly good agreement with the studies of McConnell et al. on irradiated malonic acid single crystals. The high resolution and stability of electron spin resonance spectra of irradiated polyethylene crystallized from solution suggested greater perfection of crystalline order than in elongated fibers. Moreover, the results on solution-crystallized polyethylene indicated that the alkyl radicals are formed at random in the crystalline matrix. (auth)

• Research Organization: Bell Telephone Labs., Inc., Murray Hill, N.J.
• NSA Number: NSA-18-012203
• OSTI ID: 4115242
• Journal Information: J. Polymer Sci., Pt. a, Journal Name: J. Polymer Sci., Pt. a Vol. Vol: 2
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ALKYL RADICALS
CHEMISTRY
CONFIGURATION
CRYSTALS
DIAGRAMS
ELECTRON SPIN RESONANCE
ELECTRONS
ERRORS
FIBERS
FILMS
MAGNETIC FIELDS
MAGNETIC RESONANCE
MALONIC ACID
MEASURED VALUES
MOLECULES
MONOCRYSTALS
MOTION
ORGANIC ACIDS
POLYETHYLENES
RADIATION EFFECTS
RESOLUTION
RESONANCE
SAMPLING
SOLUTIONS
SPECTRA
SPECTRAL SHIFT
SPECTROSCOPY
SPIN