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Phuc D.H.,Ho Chi Minh City International University | Nguyen T.-H.,Ho Chi Minh City International University | Toi V.V.,Ho Chi Minh City International University | Tien P.V.,Research Laboratories of Saigon Hi Technology Park
IFMBE Proceedings | Year: 2015

In this study, Hyaluronan – Chitosan – Polyvinyl phosphonic acid (HA/Cs/PVPA) gel was fabricated by hydrogel method. The surface and the inner structure of the scaffold were tested by Scanning Electron Microscope (SEM). Cell proliferation on the hydrogel film was observed using light microscope. The hydrogels were expected to meet the requirement of bioglue for future application. © Springer International Publishing Switzerland 2015. Source


Luong T.-H.,Ho Chi Minh City International University | Ngoc Dang T.-N.,Ho Chi Minh City International University | Ngoc O.P.T.,Ho Chi Minh City International University | Dinh-Thuy T.-H.,Ho Chi Minh City International University | And 4 more authors.
IFMBE Proceedings | Year: 2015

Bombyx mori (B. mori) silkworms content two main protein kinds: the structural core protein, silk fibers, and the glue-like sericin coating. In contrast with silk fibers which are biocompatible, sericin is the main cause of inflammation. Hence, immunogenic sericin coating must be completely removed from silk fibers by degumming method before applying for medical uses. Several degumming processes have been applied with different chemical treatments, pH of degumming solution, time and temperature of degumming process. The purpose of this study was to investigate a new two-step degumming process that was simple, economic and suitable for B. mori silk. This process used solution with different temperatures and times of degumming. Observations under scanning electron microscope showed that there was no sign of either impurities or destruction or damage on the surface of silk fibers. It proved that the new degumming process is appropriate. © Springer International Publishing Switzerland 2015. Source


Huynh T.P.,Research Laboratories of Saigon Hi Technology Park | Ngo V.K.T.,Research Laboratories of Saigon Hi Technology Park | Nguyen D.G.,Research Laboratories of Saigon Hi Technology Park | Nguyen H.P.U.,Research Laboratories of Saigon Hi Technology Park | And 3 more authors.
Journal of Electronic Materials | Year: 2016

Gold nanobipyramids (NBPs) have attracted attention for producing smart sensing devices as diagnostic tools in biotechnological and medical applications, because they show more advantageous plasmonic properties than comparable gold nanorods. Normally, NBPs were synthesized using seed-mediated growth process at room temperature. In this report, our group describes a method for synthesising of NBPs using microwave irradiation with ascorbic acid reduction and cetyltrimethylammonium bromide + silver nitrate (AgNO3) as capping agents. The advantages of this method are a highly effective approach to fast and uniform NBPs. The product was characterized by ultraviolet–visible spectroscopy, Fourier transform infrared spectroscopy, transmission electron microscopy, and x-ray powder diffraction. As an application in quartz crystal microbalance immunosensors, NBPs is conjugated with the chloramphenicol antibodies for signal amplification to detect chloramphenicol residuals in the QCM system. © 2016 The Minerals, Metals & Materials Society Source

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