The surface modification of polyethylene by solution-phase photochemical grafting using short irradiation times
✍ Scribed by L. M. Hamilton; A. Green; S. Edge; J. P. S. Badyal; W. J. Feast; W. F. Pacynko
- Publisher
- John Wiley and Sons
- Year
- 1994
- Tongue
- English
- Weight
- 520 KB
- Volume
- 52
- Category
- Article
- ISSN
- 0021-8995
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✦ Synopsis
The surface modification of low-density polyethylene by solution-phase photochemical grafting with acrylic acid and acrylamide is described. After irradiation for 3 min, the contact angles of the modified surfaces with water were ca. 20, 30, and 40°C and ca. 40, 40, and 80°C for grafting solutions containing 2 M , 1 M , and 0.1M of acrylamide and acrylic acid respectively. X-Ray photoelectron spectroscopy (XPS) and attenuated total reflectance infrared spectroscopy ( ATRIR) of the modified polyethylene surfaces were consistent with the presence of grafts of polyacrylamide or poly (acrylic acid). Grafting using low concentrations of monomers, that is, O.lM, resulted in a small, 20' decrease in contact angle for grafting with acrylic acid but a larger, 60" decrease for acrylamide. 0 1994