Surface graft polymerization of acrylamide onto poly(ethylene terephthalate) film by UV irradiation

Uchida, Emiko; Uyama, Yoshikimi; Ikada, Yoshito

doi:10.1002/pola.1989.080270213

Cited by 78 publications

(55 citation statements)

References 9 publications

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“…[20][21][22][23] Patterning of proteins and subsequent cell adhesion has been achieved by conventional photoresist lithography, photochemistry, and self-assembled monolayers. 24 One of these patterning techniques, surface modification using projection masks and photograft copoly- merization, was developed and refined by Matsuda et al [5][6][7][8][9] to enable micropatterning of a polymer surface on the order of microns.…”

Section: Discussionmentioning

confidence: 99%

Spatial regulation and surface chemistry control of monocyte/macrophage adhesion and foreign body giant cell formation by photochemically micropatterned surfaces

DeFife

Colton

Nakayama

et al. 1999

J. Biomed. Mater. Res.

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A long-standing goal of biomedical device development has been the generation of specific, desired host blood and tissue responses. An approach to meeting this design criteria is precise surface modification that creates micropatterns of distinct physicochemical character to direct cell adhesion and behavior. For this study, poly(ethylene terephthalate) films were coated with poly(benzyl N, N-diethyldithiocarbamate-co-styrene) and sequentially exposed to monomer solutions for photoirradiation. A photomask was placed over different regions to generate micropatterned surfaces with graft polymer stripes of three distinct ionic characters. Human monocytes were cultured on these surfaces to ascertain whether adhesion and fusion of monocytes/macrophages could be controlled. Nonionic polyacrylamide greatly inhibited adhesion and induced clumping of the few monocytes that did adhere. Macrophage adhesion and spreading led to high degrees of interleukin-13 induced foreign body giant cell formation on both the anionic poly(acrylic acid), sodium salt, and benzyl N,N-diethyldithiocarbamate portions of the culture surface. In spite of the highest observed levels of monocyte/macrophage adhesion on cationic poly(dimethylaminopropylacrylamide), methiodide, the adherent cells were not competent to undergo fusion to form foreign body giant cells. These results suggest that inflammatory cell responses may be spatially controlled in a manner that may be ultimately exploited to improve the biocompatibility of medical devices.

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Section: Discussionmentioning

confidence: 99%

Spatial regulation and surface chemistry control of monocyte/macrophage adhesion and foreign body giant cell formation by photochemically micropatterned surfaces

DeFife

Colton

Nakayama

et al. 1999

J. Biomed. Mater. Res.

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“…Its high hydrophobicity of the surface, however, sometimes causes high static electrification, low wettability, and poor dyeability. To overcome these disadvantages of PET, various modifications, such as physical coating, 1-3 plasma discharge, 4 -6 alkaline treatment, [7][8][9][10] and graft polymerization, 11,12 have been applied to PET surfaces.…”

Section: Introductionmentioning

confidence: 99%

Surface modification of poly(ethylene terephthalate) film by coating with poly(ethylene glycol)-grafted polystyrene

Seto

Kishida

Muraoka

et al. 1999

J. Appl. Polym. Sci.

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ABSTRACT:The poly(ethylene glycol) (PEG)-grafted styrene (St) copolymer, which was formed as a nanosphere, was used as an agent to modify the surface of poly(ethylene terephthalate) (PET) film. The graft copolymer was dissolved into chloroform and coated onto the PET film by dip-coating method. The coated amount depends on the content ratios of PEG and St, the solution concentration, and the coating cycles. The graft copolymers having a low molecular weight of PEG-or St-rich content was fairly stable on washing in sodium dodecyl sulfate (SDS) aqueous solution. It was confirmed that the PET surface easily altered its surface property by the coating of the graft copolymers. The contact angles of the films coated with the graft copolymers were very high (ca. 105-120°). The coated film has good antistatic electric property, which agreed with PEG content. The best condition of coating is a one-cycle coating of 1% (w/v) graft copolymer solution. The coated surface had water-repellency and antistatic electric property at the same time. The graft copolymer consisted of a PEG macromonomer; St was successfully coated onto PET surfaces, and the desirable properties of both of PEG macromonomer and PSt were exhibited as a novel function of the coated PE film.

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“…22 The triboelectric charge of surface-grafted PET film is given in Table I. The charge generated upon rubbing at 25°C and 60% RH is -0.5 kV and the half decay times, when +5 kV and -5 kV are initially applied, are as short as 18 and 21 s, respectively, in contrast to those of the UV-irradiated films.…”

Section: Surface-grafted Materialsmentioning

confidence: 99%

Electrostatic properties of UV‐irradiated and surface‐grafted polymers

Uyama

Ikada

1990

J of Applied Polymer Sci

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SynopsisA polystyrene film, a poly(ethy1ene terephthalate) ( P E T ) film, and P E T fabrics were UVirradiated or surface-grafted with various hydrophilic monomers. Their electrostatic properties were studied by measuring the triboelectric charges generated upon mechanical rubbing of these materials and by following the decay of the charges generated upon exposing the polymeric materials to a high electric field. The UV-irradiated polymers carried lower electrostatic charges than those unirradiated after their surfaces were rubbed with a cotton fabrics under the same conditions. The generation of triboelectric charge depends on both the surface hydrophilicity and the past history of the specimens. Although hydrophilic groups introduced on the polymer surface by UV exposure exhibited little effect on decaying of the electrostatic charge, polymeric materials grafted with a large amount of water-soluble polymers, especially with ionic polymers, showed lower trihoelectric generation and faster decay of the static charge.

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Surface graft polymerization of acrylamide onto poly(ethylene terephthalate) film by UV irradiation

Cited by 78 publications

References 9 publications

Spatial regulation and surface chemistry control of monocyte/macrophage adhesion and foreign body giant cell formation by photochemically micropatterned surfaces

Spatial regulation and surface chemistry control of monocyte/macrophage adhesion and foreign body giant cell formation by photochemically micropatterned surfaces

Surface modification of poly(ethylene terephthalate) film by coating with poly(ethylene glycol)-grafted polystyrene

Electrostatic properties of UV‐irradiated and surface‐grafted polymers

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