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Synthesis of eva-G-ma and its effects on tensile properties and morphology of ethylene vinyl acetate copolymer/bamboo flour and polypropylene/ bamboo flour composites - Mai Duc HuynhGraft copolymer EVA-g-MA was successfully produced by melt mixing with the highest content MA grafted on EVA reaching 1.16 wt.%. The presence of MA improved the interaction between EVA-g-MA and BF, thus, enhanced tensile properties of EVA-g-MA/BF composites. The addition of EVA-g-MA into EVA/BF and PP/BF composites formed the good adhesion at t...
10 trang | Chia sẻ: honghp95 | Ngày: 02/12/2020 | Lượt xem: 770 | Lượt tải: 0
Preparation of magnetic antibacterial composite beads fe3o4/alginate/ag - Le Thi Thu HaIn this work, we synthesized and characterized the magnetic composite beads Fe3O4/alginate/Ag of the size about 1-2 mm, with the large Ag content (24.62 wt.%). The asprepared material has a high saturation magnetization value, Ms = 59 emu/g, and very good antibacterial activity against both gram (-) and gram (+) bacteria. With the concentration 3...
7 trang | Chia sẻ: honghp95 | Ngày: 02/12/2020 | Lượt xem: 757 | Lượt tải: 0
Investigation of the condition to synthesize hap/cnts coatings on 316lss - Nguyen Thi ThomIn this work, the optimal conditions to synthesize HAp/CNTs/316L SS were reported. The XRD results confirmed the crystallinity of the obtained HAp/CNTs coatings with the signals corresponding to the single phase of HAp at 2 = 31.77o and CNTs at 2 = 26.3o, with 6.95 % of CNTs in the coatings. The crystallinity and the composition of the coatings ...
13 trang | Chia sẻ: honghp95 | Ngày: 02/12/2020 | Lượt xem: 848 | Lượt tải: 0
Investigation in loading 5-Fluorouracil ability of iron-organic frameworks - Hoai Phuong Nguyen ThiThe results of the cytotoxicity test show that the MCF7 cells inhibitory capacity of different systems is different. As time increases, the inhibitory capacity on the cancer cells of all materials increases. However, this increase from the material is different. This result is related to the slow release of drugs from the carrier materials. The ...
9 trang | Chia sẻ: honghp95 | Ngày: 02/12/2020 | Lượt xem: 674 | Lượt tải: 0
Particulate silver coating on 316l stainless steel for biomedical implants - Ly Pham ThiThis article studied on the fabrication of the silver plating with the technical parameters as follows: AgNO3 solution had the concentration of 0.05 M and 0.275 M; current density was in the range of 0.05 ÷ 0.5 A/dm2, plating time varied from 1 to 10 minutes, heat treatment was at 500 oC for 15 minutes. The SEM images showed that the silver coa...
8 trang | Chia sẻ: honghp95 | Ngày: 02/12/2020 | Lượt xem: 733 | Lượt tải: 0
Evaluation of the anticorrosion of waterborne epoxy coatings containing cerium salt-Activated ceria nanoparticles deposited onto carbon steel substrate - Anh Son NguyenIn this study, the effect of cerium (III) ions activated CeO2 nanoparticles on the corrosion protection properties of the epoxy waterborne coating was investigated. The comparison between the pigments (activated nanoparticles, Ce(NO3)3 and CeO2) was also realized. The activated nanoparticles showed a better dispersion in the epoxy matrix than th...
8 trang | Chia sẻ: honghp95 | Ngày: 02/12/2020 | Lượt xem: 721 | Lượt tải: 0
Synthesis of copper-Based nanoparticle catalysts by different methods for total oxidation of vocs - T. Le MinhFigure 5 shows the catalytic activity for the n-butanol and toluene oxidation in the gas phase of the three catalysts. The results indicated that CuO/ -Al2O3 catalysts present high activity in the reaction of toluene and n-butanol. At 300 °C total conversion is reached. The catalytic activity of Cu-NTP catalyst is the best conversion for toluene...
7 trang | Chia sẻ: honghp95 | Ngày: 02/12/2020 | Lượt xem: 763 | Lượt tải: 0
Effect of caco3 filler on the degradation of high density polyethylene (hdpe) film containing prooxidants - Pham Thu TrangThe degradation of HDPE films containing CaCO3 and prooxidant additves was studies by accelerated weathering test. CaCO3 filler retards the degradation of HDPE films containing prooxidants by prolonging the induction phase of the degradation of HDPE films but they don’t affect to the mechanisms of degradation. FTIR spectra of HD103, HD203 films ...
8 trang | Chia sẻ: honghp95 | Ngày: 02/12/2020 | Lượt xem: 652 | Lượt tải: 0
Extraction of chondroitin sulfate from chicken keel cartilage by combined applicationof ultrasound treatment and alcalase hydrolysis - Truong Ngoc ThaoBy the combined application of ultrasound treatment and enzymatic hydrolysis with Alcalase, chondroitin sulfate (CS) was extracted from chicken keel cartilage with high yields. At the optimal conditions found for the ultrasound treatment by using Circumscribed Central Composite design and Modde 5.0 software, the yield of CS was 24.29 % of the ab...
11 trang | Chia sẻ: honghp95 | Ngày: 02/12/2020 | Lượt xem: 850 | Lượt tải: 0
Synthesis of phenothiazine derivatives as novel moieties toward utilization in alternative donor – acceptor conjugated polymers - Truong Tung KhuongTwo new phenothiazine derivatives, PDA and PyP, have been successfully synthesized via Buchwald-Hartwig C-N coupling amination with the present of catalytic palladium. The chemical structures of these products were analyzed by 1H NMR spectra while light absorption properties were characterized via UV – Vis spectroscopy in a series of different c...
7 trang | Chia sẻ: honghp95 | Ngày: 02/12/2020 | Lượt xem: 681 | Lượt tải: 0
