Search for dissertations about: "nanocomposite materials"

Showing result 1 - 5 of 97 swedish dissertations containing the words nanocomposite materials.

  1. 1. Biomimetic Formation of Calcium Phosphate Based Nanomaterials

    Author : Wenxiao He; [2014]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; superstructure; lyotropic liquid crystal; self-assembly; Calcium phosphate; bone-like apatite; amphiphilic peptide; nanocomposite; biomimetic mineralization;

    Abstract : The intercellular material in bone is a nanocomposite of aligned “hard” inorganics—calcium phosphate (CaP) platelets embedded in the long-range ordered “soft” organic collagen matrix. This elaborate structural arrangement redeems the weaknesses of the individual components (being soft protein or brittle mineral) and gives bone its excellent mechanical properties for the protection and support of our bodies. READ MORE

  2. 2. Nanocomposites for Use in Sliding Electrical Contacts

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Benny André; Uppsala universitet.; [2011]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; tribology; materials science; Materialvetenskap; Materials Science; Teknisk fysik med inriktning mot materialvetenskap; Engineering Science with specialization in Materials Science; Teknisk fysik med inriktning mot tribomaterial; Engineering Science with specialization in Tribo Materials;

    Abstract : In this thesis nanocomposite materials for use in high performance electrical contacts are tested. Self mating silver as coatings on cupper substrates are the most used material combination in power connectors today. In this work two new concepts were tested. READ MORE

  3. 3. Thermal Stability of Electrodeposited Nanocrystalline Ni- and Co-Based Materials

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Melina da Silva; [2007]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; nanocrystalline materials; 3DAP; nanocomposite; thermal stability; TEM; nickel; texture; DSC; cobalt; grain growth; EBSD;

    Abstract : The attractive properties associated with nanocrystalline materials are to a large extent a result of their high intercrystalline volume fraction. However, the intrinsic instability of the nanostructured state may compromise the gain in properties by the occurrence of grain growth during exposure at elevated temperatures. READ MORE

  4. 4. Investigation of electrical and magnetic properties of nanoparticles and nanofibers with the aim to tailor material properties of nanocomposites

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Anna Jänis; [2008]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; microscopy; ferrite; SiC; nanocomposite; nanowire; microwave absorbing properties; network analyzer; nanoparticle;

    Abstract : Nanocomposites are the subject of interest in this study which can be explained by the factum that using building blocks with dimensions in the nanosize range makes it possible to design and create new materials which can satisfy several functions at the same time for many applications. The applications of interest in this study belong to the microwave frequency region and for that reason a number of materials were investigated to define their microwave absorbing properties. READ MORE

  5. 5. Exploring Biopolymer-Clay Nanocomposite Materials by Molecular Modelling

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Yan Wang; KTH.; [2015]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; bio-nanocomposite; interfacial mechanism; binding affinity; dimensional stability; counterions; hydration; stress-strain behavior; xyloglucan; chitosan; chitin; molecular dynamics; montmorillonite.; 生物复合材料,界面机理,分子间亲和力,材料尺寸稳定性,抗衡离子,水合作用,应力应变表现, 木葡聚糖,壳聚糖,甲壳素,分子动力学模拟,蒙脱土; bio-nanokompositer; gränsytor; affinitet; dimensionsstabilitet; jonhydrering; spännings-töjningsbeteende; xyloglukan; kitosan; kitin; molekyldynamisk; montmorillonit.; Kemi; Chemistry; Fiber- och polymervetenskap; Fibre and Polymer Science; Materials Science and Engineering; Teknisk materialvetenskap;

    Abstract : In this thesis, bio-nanocomposites made from two alternative biopolymers and montmorillonite (Mnt) clay have been investigated by molecular modelling. These biopolymers are xyloglucan (XG) and chitosan (CHS), both of which are abundant, renewable, and cost-effective. READ MORE