IMPROVEMENTS IN GRAFT POLYMERIZATION UTILIZING IONIZING RADIATION
More than one monomer can be grafted on a polymer by application to the polymer after it has been irradiated in the presence of oxygen to form active centers. Ways for doing this are discussed. One of the simplest ways is by interrupting the contacting steps before all the active centers are used up, letting the final step consume the rest of the centers. Another way is by temperature control; it is possible in this manner to control the areas where grafting occurs, e.g., for a polymer having amorphous and crystalline regions, grafting can be effected on the amphorous regions first by conducting the contacting step at a temperature below the melting point of the crystalline regions. Three examples of this method are given in which methyl methacrylate and acrylonitrile are grafted onto polyethylene and polypropylene. (D.L.C.)
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-15-002682
- OSTI ID:
- 4122330
- Report Number(s):
- GB 853970
- Country of Publication:
- United Kingdom
- Language:
- English
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