Graft polymerization of acrylic acid onto polyethylene film by preirradiation method. I. Effects of preirradiation dose, monomer concentration, reaction temperature, and film thickness. [Electron beams]

Journal Article · Mon Mar 01 04:00:00 EST 1982 · J. Appl. Polym. Sci.; (United States)

DOI:https://doi.org/10.1002/app.1982.070270322· OSTI ID:5531620

Ishigaki, I; Sugo, T; Senoo, K; Okada, T; Okamoto, J; Machi, S

Low- and high-density polyethylenes were irradiated by electron beams with dose of 2 to 50 Mrad and then immersed in aqueous solution of acrylic acid (monomer concentration from 30 to 100 wt %) for 10 min to 5h at a temperature of 25 to 40/sup 0/C. The degree of grafting increases with time and levels off. High density polyethylene shows lower grafting rate and higher final % grafting in compared with low-density polyethylene. Both grafting rate and final % grafting increase with total dose of preirradiation, but show some saturation at high doses. The highest grafting rate was observed at 60 wt % of monomer concentration where the grafted polyethylene swells to the largest extent in the monomer mixture. Apparent activation energies for the grafting are 19.6 and 27.3 kcal/mol for low- and high-density polyethylenes, respectively, reflecting the process of monomer diffusion in the film. Grafting rate decreases with increasing film thickness. Graft polymerization starts on the surface of the film and proceeds to the inner part with monomer diffusion through the grafted layer.

• Research Organization: Japan Atomic Energy Research Inst., Takasaki
• OSTI ID: 5531620
• Journal Information: J. Appl. Polym. Sci.; (United States), Journal Name: J. Appl. Polym. Sci.; (United States) Vol. 27:3; ISSN JAPNA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360406* -- Materials-- Polymers & Plastics-- Radiation Effects-- (-1987)
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400600 -- Radiation Chemistry
ACRYLIC ACID
BEAMS
CARBOXYLIC ACIDS
CHEMICAL RADIATION EFFECTS
CHEMICAL REACTIONS
CHEMISTRY
DATA
DOSES
ELECTRON BEAMS
EXPERIMENTAL DATA
FILMS
GRAFT POLYMERS
INFORMATION
LEPTON BEAMS
MEDIUM TEMPERATURE
MONOCARBOXYLIC ACIDS
NUMERICAL DATA
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PARTICLE BEAMS
POLYETHYLENES
POLYMERIZATION
POLYMERS
POLYOLEFINS
RADIATION CHEMISTRY
RADIATION DOSES
RADIATION EFFECTS
TEMPERATURE EFFECTS
TIME DEPENDENCE