Surface grafting of polyethylene by mutual irradiation in methyl acrylate vapor. III. Quantitative surface analysis by x-ray photoelectron spectroscopy. [Gamma radiation]

Journal Article · Sat Sep 01 04:00:00 EDT 1979 · J. Polym. Sci., Polym. Phys. Ed.; (United States)

DOI:https://doi.org/10.1002/pol.1979.180170910· OSTI ID:5977391

Yamamoto, F; Yamakawa, S

X-ray photoelectron spectroscopy (ESCA) has been used for quantitative surface analysis of surface grafts prepared by mutual irradiation of polyethylene (PE) in methyl acrylate (MA) vapor with ..gamma.. rays and high-energy electrons. The binding-energy shift between the C/sub 1s/ electrons in the ester group of poly(methyl acrylate) (PMA) and in PE is large enough (ca. 3.6 eV) to distinguish the PMA and PE components. The C/sub 1s/ peak-area ratio of ester carbon to other carbons is related quantitatively to graft composition by constructing a calibration curve for a given instrument and excitation source, with a series of homogeneous grafts of known composition used as the calibration standards. Using the calibration curve and the measured peak ratio, the surface composition of the surface grafts is determined. The relations between surface compositions according to ESCA and attenuated total reflection (ATR) infrared spectroscopy and between adhesive bond strength and ESCA composition are discussed. In the electron-induced grafts, the grafted surface reaches maximum adhesive bondability with attainment of 100 mole % MA in the surface detected by ESCA; i.e., with formation of a homopolymer layer. The ESCA composition can be used as an indicator of the presence of the homopolymer layer or as a criterion for predicting adhesive bond strength.

• Research Organization: Ibaraki Electrical Communication Lab., Tokai, Japan
• OSTI ID: 5977391
• Journal Information: J. Polym. Sci., Polym. Phys. Ed.; (United States), Journal Name: J. Polym. Sci., Polym. Phys. Ed.; (United States) Vol. 17:9; ISSN JPLPA
• Country of Publication: United States
• Language: English

Related Subjects

38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400600* -- Radiation Chemistry
ACRYLATES
CARBOXYLIC ACID SALTS
CHEMICAL RADIATION EFFECTS
CHEMISTRY
DATA
DATA FORMS
ELECTROMAGNETIC RADIATION
ELECTRONS
ELEMENTARY PARTICLES
EXPERIMENTAL DATA
FERMIONS
GAMMA RADIATION
GRAFT POLYMERS
INFORMATION
IONIZING RADIATIONS
ISOLATED VALUES
LEPTONS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC POLYMERS
POLYETHYLENES
POLYMERS
POLYOLEFINS
RADIATION CHEMISTRY
RADIATION EFFECTS
RADIATIONS