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Effects of photoirradiation on mechanical properties of glassy polymers
Photodegradation behaviors of some glassy polymers as polystyrene (PS), poly(methyl methacrylate) (PMMA), styrene-methyl vinylketone copolymer [P(St-MVK)] and methyl methacrylate-methyl vinylketone copolymer [P(MMA-MVK)] have been investigated in terms of some mechanical proper ties as tensile strength, elongation, flexure strength and flexure strain. The results obtained are as follows. 1) PS and P(St-MVK) have the same photodegradation tendency. However, the photodegra dation of P(St-MVK) isdoi:10.2115/fiber.43.2_97 fatcat:dmezw2ok55fw3kmhu6n6iax27u