Abstract
Photo-induced graft polymerization of acrylic monomers on fiber surfaces pre-wetted with water or aprotic polar solvents is reviewed. The role of solvent-induced fiber swelling and monomer penetration in the grafting process is examined. The role of dyes, biacetyl, metal oxides, polar solvents, and hydrogen donors as accelerants in photo-grafting is explored. Grafting of monomers introduced as vapors is compared with grafting of monomers applied from wetting solution, and the nature of polymer deposition is considered for both systems. The physical and chemical properties of the resultant fiber grafts are examined and compared with untreated fibers. Grafting is shown to have a marked effect on the dyeing and color characteristics of the fibers. Photo-induced vapor phase grafting of acrylic monomers on pre-wetted fibers is shown to proceed rapidly with little homopolymer formation or interfiber bonding to give modified fabrics that retain major aesthetic characteristics and yet have improved properties dependent on the polymer grafted.
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