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Surface grafting polymerization of N ‐vinyl‐2‐pyrrolidone onto a poly(ethylene terephthalate) nonwoven by plasma pretreatment and its antibacterial activities
Author(s) -
Chen KoShao,
Ku YuanAn,
Lin HongRu,
Yan TsongRong,
Sheu DeyChyi,
Chen TimMo
Publication year - 2006
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.23111
Subject(s) - grafting , nonwoven fabric , materials science , monomer , polymer chemistry , contact angle , wetting , polyester , polymerization , nuclear chemistry , fourier transform infrared spectroscopy , ethylene , chemical engineering , composite material , chemistry , polymer , organic chemistry , catalysis , engineering , fiber
The objective of this research was the surface grafting polymerization of biocompatible monomer N ‐vinyl‐2‐pyrrolidone (NVP) onto a plasma‐treated nonwoven poly(ethylene terephthalate) (PET) substrate with ultraviolet (UV)‐induced methods. The effects of various parameters, such as the monomer concentration, reaction time, initiator (ammonium peroxodisulfate) concentration, and crosslinking agent ( N,N ′‐methylene bisacrylamide) concentration, on the grafting percentage were studied. The grafting efficiency of the modified nonwoven PET surfaces reached a maximum at 50 min of UV irradiation and with a 30 wt % aqueous NVP solution. After the plasma activation and/or grafting, the hydrophobic surface of the nonwoven was modified into a hydrophilic surface. NVP was successfully grafted onto nonwoven PET surfaces. The surface wettability showed that the water absorption of NVP‐grafted nonwoven PET (NVP‐ g ‐nonwoven PET) increased with increasing grafting time. NVP‐ g ‐nonwoven PET was verified by Fourier transform infrared spectra and scanning electron microscopy measurements. An antibacterial assessment using an anti‐ Staphylococcus aureus test indicated that S. aureus was restrained from growing in NVP‐ g ‐nonwoven PET. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 100: 803–809, 2006