Carbonization of polytetrafluoroethylene surface by UV-induced grafting of vinylidene chloride

A method has been developed for modifying the surface layer of polytetrafluoroethylene by incorporation of poly(vinylidene chloride) via UV radiation-initiated graft polymerization of vinylidene chloride from the vapor phase using a PRK-4 mercury lamp. By the subsequent treatment of the composition...

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Bibliographic Details
Published inHigh energy chemistry Vol. 48; no. 5; pp. 353 - 357
Main Authors Abdrashitov, E. F., Kritskaya, D. A., Bokun, V. Ch, Ponomarev, A. N.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.09.2014
Subjects
Chemistry
Chemistry and Materials Science
Physical Chemistry
Plasma Chemistry
High Energy Chemistry
Graft Polymerization
Contact Angle
PTFE
Initial Thickness
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Summary:A method has been developed for modifying the surface layer of polytetrafluoroethylene by incorporation of poly(vinylidene chloride) via UV radiation-initiated graft polymerization of vinylidene chloride from the vapor phase using a PRK-4 mercury lamp. By the subsequent treatment of the composition with aqueous ammonia, dehydrochlorination (carbonization) of the grafted poly(vinylidene chloride) has been performed. The kinetics of UV grafting and the distribution of the carbonized phase in the polytetrafluoroethylene matrix have been studied. A material with the carbonized surface layer of a 10—30 μm thickness and a contact angle of about 57° remaining stable over time has been obtained.
ISSN:0018-1439
1608-3148
DOI:10.1134/S0018143914050026