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首页> 外文期刊>journal of applied polymer science >Hydrophilic surface modification of polypropylene films by CCl4plasma
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Hydrophilic surface modification of polypropylene films by CCl4plasma

机译：Hydrophilic surface modification of polypropylene films by CCl4plasma

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AbstractThe CCl4plasma treatment of polypropylene films was investigated from the viewpoint of hydrophilic surface modification using a contact‐angle meter, ATR FTIR spectroscopy, and angular XPS. Hydrophilicity and chemical composition of the CCl4plasma treatment was effective in hydrophilic modification. The advancing contact angle of water for polypropylene films was decreased from 99° to 81‐7° by the CCl4plasma treatment, and the surface energy increased from 27.2 to 38.9‐67.7 mJ/m2when the discharge current varied from 50 to 150 mA. The CCl4plasma initiated chlorination, oxidation, and aluminum sputtering reactions. The chlorination of polypropylene films was favorable in a mild CCl4plasma operated at discharge current of 50 mA. The oxidation and aluminum sputtering reactions were predominant over the chlorination in strong CCl4plasmas operated at discharge currents of more than 75 mA. The chlorination initiated by the mild CCl4plasma was restricted near the film surface within 36 Å deep. The regions modified with the strong CCl4plasma reached inner layers of 36‐49 Å deep. Hydrophilicity caused by the CCl4plasma treatment may be due not only to chlorine functionalities but also to oxygen and aluminum functionalities. © 1993 John Wil

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