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Adhesive Agent

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Tae-il Son – One of the best experts on this subject based on the ideXlab platform.

  • Synthesis of visible light-induced cross-linkable chitosan as an anti-Adhesive Agent
    Macromolecular Research, 2011
    Co-Authors: Kwang-il Kim, Yoshihiro Ito, Tae-il Son

    Abstract:

    Visible light-induced cross-linkable chitosan was synthesized by the incorporation of furfuryl isocyanate. The synthesized chitosan derivative was analyzed by ^1H NMR and GPC. The synthesized chitosan derivative showed no significant toxicity. The synthesized chitosan derivative was mixed with Rose Bengal in distilled water and irradiated with visible light for 5 min in the presence of a photomask. A micropattern that matched the micropattern of photomask was formed and the photoreactivity of the synthesized chitosan derivative was confirmed. Solidification of the synthesized chitosan is believed to have occurred by a photo-oxidation-induced cross-linking mechanism. Contact angle measurements and cell culture on the surface of solidified chitosan derivative were also carried out. Cell adhesion on the surface of solidified chitosan was not shown. Considering these results, the synthesized chitosan derivative is non-cytotoxic, solidifies rapidly by visible light not chemicals, and has fewer cell interactions. The synthesized chitosan derivative is a novel candidate for anti-Adhesive Agent.

  • Synthesis of visible light-induced cross-linkable chitosan as an anti-Adhesive Agent
    Macromolecular Research, 2011
    Co-Authors: Kwang-il Kim, Yoshihiro Ito, Tae-il Son

    Abstract:

    Visible light-induced cross-linkable chitosan was synthesized by the incorporation of furfuryl isocyanate. The synthesized chitosan derivative was analyzed by 1H NMR and GPC. The synthesized chitosan derivative showed no significant toxicity. The synthesized chitosan derivative was mixed with Rose Bengal in distilled water and irradiated with visible light for 5 min in the presence of a photomask. A micropattern that matched the micropattern of photomask was formed and the photoreactivity of the synthesized chitosan derivative was confirmed. Solidification of the synthesized chitosan is believed to have occurred by a photo-oxidation-induced cross-linking mechanism. Contact angle measurements and cell culture on the surface of solidified chitosan derivative were also carried out. Cell adhesion on the surface of solidified chitosan was not shown. Considering these results, the synthesized chitosan derivative is non-cytotoxic, solidifies rapidly by visible light not chemicals, and has fewer cell interactions. The synthesized chitosan derivative is a novel candidate for anti-Adhesive Agent.
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  • Synthesis of O-carboxylated low molecular chitosan with azido phenyl group: Its application for adhesion prevention
    Macromolecular Research, 2010
    Co-Authors: Kwang-il Kim, Tae-il Son, Yoshihiro Ito, Jaehong Han, Jae-gwan Lee, Dong Keun Han, Kwang-sup Song, Eui-chan Jang

    Abstract:

    A water-soluble photo-reactive chitosan derivative was synthesized as a novel anti-Adhesive Agent by combining low molecular O-carboxymethyl chitosan and photo-reactive N-(4-azidobenzoyloxy) succinimide. Photoreactive low molecular O-carboxymethyl chitosan was analyzed by Fourier transform infrared spectroscopy (FTIR) and proton nuclear resonance spectroscopy (1H NMR). Photo-immobilization of the polymer was confirmed using photo-mask and the degree of cross-linking was measured from the immobilized dried weight. The cytotoxicity of the photo-reactive low molecular O-carboxymethyl chitosan was confirmed by a MTT assay. In vivo animal study was performed to identify the synthetic material for antiAdhesive effect. Furthermore, the protein release test that was performed to apply it as a drug-eluting anti-Adhesive Agent after bovine serum albumin (BSA), was immobilized to the photoreactive polymer. Because photo-reactive low molecular O-carboxymethyl chitosan has high water solubility as well as non-cytotoxicity and photoimmobilization, it may a suitable material for making drug-eluting antiAdhesive Agents.

Mikako Gushi – One of the best experts on this subject based on the ideXlab platform.

  • usage of uv curable oligomer based Adhesive Agent in hermatypic coral experimental research
    MethodsX, 2019
    Co-Authors: Ichiro Takeuchi, Hideyuki Yamashiro, Mikako Gushi

    Abstract:

    Abstract The global decline of the tropical and subtropical coral reefs requires urgent completion of various experiments that will reveal the factors influencing coral health. We describe the procedure of a new inexpensive, easy, and fast method for attaching fragments of the hermatypic coral Acropora spp. to small polycarbonate hexagon head bolts using Bondic®, an ultraviolet (UV)-curable oligomer-based Adhesive Agent made by Laser Bonding Tech, Inc. (Aurora, ON, Canada). The attachment was hardened within 10 s after applying the Adhesive to the cut surface of the coral fragment. The corals attached to polycarbonate bolt were tolerant to long-distance aerial transport 3 days after the attachment. In addition to its implementation in various experiments using hermatypic corals, this method will contribute to aquaculture of hermatypic corals, exhibition of corals in aquariums, and coral reef restoration. The advantages of this new method are summarized below: • A new UV-curable oligomer-based Adhesive Agent is used as an artificial substrate for coral. • This method is inexpensive, easy to use, and coral attaches quickly to the artificial substrate. • Corals attached to the artificial substrate can withstand long periods of transportation.

Maria Cristina Borsatto – One of the best experts on this subject based on the ideXlab platform.

  • Shear strength of the bond to primary dentin: influence of Er:YAG laser irradiation distance
    Lasers in Medical Science, 2011
    Co-Authors: Camila Scatena, Carolina Paes Torres, Jaciara Miranda Gomes-silva, Marta Maria Martins Giamatei Contente, Jesus Djalma Pécora, Regina Guenka Palma-dibb, Maria Cristina Borsatto

    Abstract:

    The aim of this study was to assess in vitro the influence of Er:YAG laser irradiation distance on the shear strength of the bond between an Adhesive restorative system and primary dentin. A total of 60 crowns of primary molars were embedded in acrylic resin and mechanically ground to expose a flat dentin surface and were randomly assigned to six groups ( n  = 10). The control group was etched with 37% phosphoric acid. The remaining five groups were irradiated (80 mJ, 2 Hz) at different irradiation distances (11, 12, 16, 17 and 20 mm), followed by acid etching. An Adhesive Agent (Single Bond) was applied to the bonding sites, and resin cylinders (Filtek Z250) were prepared. The shear bond strength tests were performed in a universal testing machine (0.5 mm/min). Data were submitted to statistical analysis using one-way ANOVA and the Kruskal-Wallis test ( p