• 제목/요약/키워드: Bionanocomposites

검색결과 2건 처리시간 0.016초

MWCNT/Fibrin Bionanocomposites by in situ Enzymatic Polymerization

  • Kim, Mi-Jin;Jang, Jun-Ho;Han, Jung-Hun;Lee, Yong-Won;Cho, Sang-Min;Son, Sung-Yong;Hulme, John;Choi, In-Sung S.;Paik, Hyun-Jong;An, Seong-Soo A.
    • Bulletin of the Korean Chemical Society
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    • 제30권2호
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    • pp.405-408
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    • 2009
  • In this work multiwalled carbon nanotube (MWCNT)/fibrin hybrid structures were synthesized via the transglutaminase- catalyzed polymerization of fibrinogen (FBG). Specifically, FBG was tethered onto oxidized MWCNTs by amide coupling, and the in situ polymerization of FBG to fibrin was performed by plasma transglutaminase (Factor XIIIa) in the presence of thrombin. The attached FBG was found to be biologically active and was polymerized to fibrin by thrombin and Factor XIIIa. MWCNT-FBG and MWCNT-Fibrin structures were characterized by FT-IR spectroscopy, transmission electron microscopy, and energy-dispersive X-ray (EDX) spectroscopy.

Physical properties of mungbean starch/PVA bionanocomposites added nano-ZnS particles and its photocatalytic activity

  • Yun, Yeon-Hum;Kim, Eun-Sik;Shim, Wang-Geun;Yoon, Soon-Do
    • Journal of Industrial and Engineering Chemistry
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    • 제68권
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    • pp.57-68
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    • 2018
  • The main objective of this study is to prepare the bionanocomposite films using mungbean starch (MBS), PVA, ZnS, and plasticizers, and to evaluate the physical properties, thermal stability, and photocatalytic activity. The bionanocomposite films were cross-linked by heat-curing process. The ZnS and bionanocomposite films were characterized by FT-IR, XRD, and SEM. The results indicated that the mechanical properties and water resistance enhanced up to 1.2-1.5 times by the addition of nano-ZnS particles, and the thermal stability was improved by the addition of nano-ZnS particles. The photocatalytic activity of the bionanocomposite films added nano-ZnS particles was examined using bisphenol A (BPA) and methyl orange (MO). In addition, the photodegradation efficiency of BPA and MO was evaluated using the pseudo-first order kinetic model (PFOK).