Composite Materials Doctoral thesis

The motivation to study the topics presented in the thesis comes from the analysis of published literatures, and from the evaluation of the application potential of composite material structures and intelligent optimization methods, especially the reliability-based optimization methods.

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The research objectives of the thesis: Mn-(Bi, Ga) based rare-earth-free hard magnetic materials. Soft magnetic materials of Fe-Co. Rare-earth-free hard magnetic nano composite materials of Mn-(Bi, Ga)/Fe-Co.

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Goals of the thesis: Preparing of zirconia/silane combined films on steel subtrate for organic coatings to replace phosphate and chromate pretreatment; Proposing the mechanism of film formation process and assessing characteristics of morphology, composition, electrochemical properties and bonding of the zirconia/silane film.

27p extraenglish 24-05-2021 21 5   Download

Research purpose: Preparation and characterization of nanocarrier systems for drug delivery system based on the modification of dendrimer (PAMAM) with biocompatible surfaces such as PNIPAM and PAA to improve the capping cisplatin.

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Objective: Study on synthesis of nano dendrimer PAMAM with anticancer drugs carboplatin (CAR) and oxaliplatin (OXA) to reduce the toxicity of the drug to normal cells and improve the effectiveness on cancer cell destruction by increasing solubility, increasing drug storage capacity, targeting drugs passively.

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The research objectives of the thesi: Manufacturing biochar (BC) and activated carbon from coffee husk; Fabrication of biochar/activated carbon composite materials from coffee husk and MnFe2O4 nanomaterials to treat Cr(VI) and Ni(II) ions in water. Clarifying adsorption mechanism and heavy metal ion adsorption model on VLHP from coffee husk.

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The thesis consists of 135 pages, including 21 tables of data, 50 figures and 144 references. The structure of the thesis consists of: Introduction: 4 pages; Overview: 32 pages; Experimental part: 13 pages; Results and discussion: 63 pages; Recent contributions of the thesis: 1 page; The list of published works: 2 pages; References: 18 pages. There is also an appendix containing the spectrums and diagrams that measure the characteristics and properties of components and AG/CS/LOV, AG/CS/LOV/ginsenoside Rb1 composites with 11 pages.

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Equivalent inclusion approach is then developed to account for possible diversions, such as non-idealistic geometric forms of the inhomogeneities, imperfect matrix-inclusion contacts, filler dispersions, and when the particular values of the fillers’ properties are unspecified, using available numerical or experimental reference conductivity data for particular composites.

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The objective of the research is to evaluate combination ability of nano additive with carbon black reinforced for rubber and rubber blend; create rubber nanocomposite materials with a high quality, solvent durability and sustainability in the naturally humid environment.

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Manufacture composite based on epoxy reinforced by glass fiber with organ – modified nanosilica using organotitanate curing agent that have good mechanical strength, thermal stability, flame restraint ability; improve the toughness of epoxy resin by incorporating reinforcing agent such as organ – modified nanosilica and glass fiber with appropriate manufacturing condition and ratio.

28p capheviahe26 25-01-2021 29 3   Download

Study the structural, morphological and physicochemical properties of synthetic materials by modern physical and chemical methods such as XRD, FTIR, SEM, TEM, XPS, EDX, BET, TG-DTA, UV -Vis; evaluation of photochemical catalyst using visible light in the decomposition of dyes RR-195, RY-145 on synthetic materials.

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Building approximation formulas using equivalentinclusion method to determine the effective values of the conductivity, the elastic modulus of compound-inclusion composite materials and applying numerical methods using finite elements (FE) calculated for some specific material models.

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Preparing of zirconia/silane combined films on steel subtrate for organic coatings to replace phosphate and chromate pretreatment; proposing the mechanism of film formation process and assessing characteristics of morphology, composition, electrochemical properties and bonding of the zirconia/silane film.

27p larachdumlanat129 20-01-2021 36 4   Download

Preparing of zirconia/silane combined films on steel subtrate for organic coatings to replace phosphate and chromate pretreatment. Proposing the mechanism of film formation process and assessing characteristics of morphology, composition, electrochemical properties and bonding of the zirconia/silane film.

27p trinhthamhodang7 31-08-2020 19 3   Download

Researching and developing technology for producing magnetic graphite materials from Vietnamese flake graphite sources as materials to be applied in treating the organic polluted environment.

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Study on fabrication proton exchange membrane fuel cell (PEMFC). Characteristics and selection of the optimal catalyst material and composition for the catalyst layer in membrane electrodes assembly (MEA) and to evaluate influence of manufacturing technological parameters on MEA properties and from that basis master core technology to develop MEA manufacturing process.

28p trinhthamhodang7 31-08-2020 22 2   Download