THE ROLE OF PARTITIONING OF REAGENTS IN GRAFTING AND CURING REACTIONSINITIATED BY IONIZING-RADIATION AND UV

Experimental evidence involving monomer absorption studies using triti ated styrene is shown to support the proposal that additives such as m ineral acids and certain inorganic salts when dissolved in the monomer solution enhance radiation grafting yields by a mechanism involving p artitioning of reagents. Photoinitiators such as benzoin ethyl ether a nd its methyl analogue are reported as new additives for grafting of s tyrene in methanol to cellulose and polypropylene initiated by ionizin g radiation. The partitioning concept is shown to be relevant in analo gous UV grafting and curing processes.