コロナ処理によるポリエチレンの表面活性化

概要

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The physical and chemical changes of polyethylene films exposed to oxygen corona and ozone were studied at various voltages and periods of treatment. Besides ethanolic sodium hydroxide solution, sulfur tetrafluoride was used to determine carboxyl groups in the presence of carbonyl groups in oxidized films. The results obtained are as follows. Corona treatment produced ethanol-soluble fraction on the surface, while ozone exposure caused no remarkable surface change. The quantity of ethanol-soluble fraction remarkably increased with voltage and time of corona treatment, and reached to 9. 3% in weight, equivalent to 1.7 pm in thickness for the 15 kv-120 min corona treated film. SF_4 method was a rapid method for determining ketone and acid contents, and caused no reaction product loss in corona treated films in the analysis process. At approximately equal carbonyl contents. the acid contents in corona treated films were always higher than those in ozone exposed films. For example, 69% of carbonyl groups was ketone and 31% was acid in the 10 kv-90 min corona treated film, while the proportion was 74% ketone and 26% acid in the 13 kv-120 min ozone exposed film.
社団法人日本材料学会の論文
1977-05-15