Surface functionalization of poly(lactic acid) film by UV-photografting ofN-vinylpyrrolidone

Autor:	Mario H. Gutierrez-Villarreal, Mayra G. Ulloa-Hinojosa, Jose Gerardo Gaona-Lozano
Rok vydání:	2008
Předmět:	Materials science Polymers and Plastics N-Vinylpyrrolidone General Chemistry Surfaces Coatings and Films Contact angle chemistry.chemical_compound Monomer Photopolymer chemistry Polymerization Photografting Polymer chemistry Materials Chemistry Surface modification Antibacterial agent
Zdroj:	Journal of Applied Polymer Science. 110:163-169
ISSN:	1097-4628 0021-8995
DOI:	10.1002/app.28000
Popis:	The photoinitiated grafting of N-vinylpyrrolidone (NVP) onto poly(lactic acid) (PLA) film with the use of benzophenone (BP) as the initiator, modified the natural hydrophobic PLA behavior to an hydrophilic film with desirable wettability. The surface photografting parameters-percent conversion of monomer to overall photopolymerization (Cp), percent conversion of monomer to the photograft polymerization (Cg), and grafting efficiency (Eg) were calculated. The resulting film surface was analyzed using ATR-FTIR and UV spectroscopy, derivative spectroscopy and water contact angle. Besides, we demonstrated that the grafted polyvinylpyrrolidone chains could easily react with iodine to form a complex as the homopolymer does with antibacterial activity. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008
Databáze:	OpenAIRE
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