Abstract
Poly (oxyethylene) dissolved in water was degraded by ozone accompanied by ultraviolet radiation of 253.7 nm. The reactor was a flat rectangular channel sandwiched with transparent quartz plates. A polymer solution was mixed with an ozone solution at the reactor inlet.The degradation rate of the polymer was proportional to the UV irradiation. A random degradation mechanism was realized when the polymerization degree was larger than 300. The activation energy was 30 kJ. mol-1, which was about half that for the case without UV radiation. The degradation rate was increased by 7-10 time at an irradiation of 5.5 W·m-2.
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