ON THE STRUCTURE OF POLYETHYLENE GRAFTS WITH PREIRRADIATION TECHNIQUE

Journal Article · Thu Dec 01 04:00:00 EST 1960 · J. Polymer Sci.

DOI:https://doi.org/10.1002/pol.1960.1204815022· OSTI ID:4005555

Sella, C

The structure and morphology of copolymers obtained by grafting styrene, vinyl acetate, acrylonitrile, snd methyl methacrylate monomers onto polyethylene preirradiated with gamma rays were investigated by x-ray analysis and electron microscopy. Analysis of the x-ray diagrams at large - angles permits the changes in crystallinity of the polymers subjected to grafting as well as deformation of the crystal lattice to be followed as function of the nature, frequency, and length of the molecules grsfted onto the polyethylene backbone. The grsfting reaction is heterogeneous, leading to the coexistence of three phases, namely, nongrafted polyethylene, grafted copolymer, and homopolymer. Electron microscopy demonstrated the form and distribution of the precipitated homopolymer as functions of grafting conditions (preliminary radiation, temperature, etc.) and preliminary thermal treatment (annealing, quenching, etc.) of the graft copolymer. (auth)

• Research Organization: CNRS, Bellevue, France
• NSA Number: NSA-15-019426
• OSTI ID: 4005555
• Journal Information: J. Polymer Sci., Journal Name: J. Polymer Sci. Vol. Vol: 48
• Country of Publication: Country unknown/Code not available
• Language: French

Related Subjects

ACETATES
ACRYLIC ACID
ACRYLONITRILES
ALUMINUM ALLOYS
ANNEALING
CANNING
CHEMICAL REACTIONS
CHEMISTRY
CONFIGURATION
CRYSTALS
CYANIDES
DISTRIBUTION
ELECTRON MICROSCOPY
GAMMA RADIATION
GRAFTS
HEAT TREATMENTS
HIGH TEMPERATURE
IRRADIATION
LATTICES
MATERIALS TESTING
METHACRYLIC ACID
MOLECULES
NITRILES
POLYETHYLENES
PRESSURE
STAINLESS STEELS
STYRENE
TRANSPLANTS
URANIUM DIOXIDE
VINYL RADICALS
X RADIATION