Radiation effects on polymers—X: The grafting of acrylic acid on polyethylene in presence of a redox system using accelerated electrons
✍ Scribed by M.I. Aly; K. Singer; N.A. Ghanem; M.A. El-Azmirly
- Publisher
- Elsevier Science
- Year
- 1978
- Tongue
- English
- Weight
- 365 KB
- Volume
- 14
- Category
- Article
- ISSN
- 0014-3057
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✦ Synopsis
Films of low-density polyethylene grafted with various amounts of polyacrylic acid were prepared by the direct irradiation method, using a 10 MeV linear electron accelerator. Aqueous solutions of acrylic acid were used with FeSO4 • 7H20 as a redox system. The best graft/homopolymer ratios were obtained at radiation doses between 2 and 3 Mrad, at acrylic acid concentrations of 40-60~, and at FeSO~7H20 concentrations of 0.25 0.5°/o by weight. The grafted films were tested for reverse osmosis properties. A membrane with 60°{, polyacrylic acid content gave 87°/,, salt rejection and a water flux of 0.75 × 10 -5 gm/cm 2 per sec.