Sökning: "star-shaped"

Visar resultat 1 - 5 av 17 avhandlingar innehållade ordet star-shaped.

  1. 1. Novel Possibilities for Advanced Molecular Structure Design for Polymers and Networks

    Författare :Anna Finne; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; ring-opening polymerization; coordination-insertion; germanium; cyclic tin alkoxides; spirocyclic initiators; poly L-lactide ; poly 1; 5-dioxepan-2-one ; triblock; star-shaped; network; functionalization; morphology; AFM; Polymer chemistry; Polymerkemi;

    Sammanfattning : Synthetic and degradable polymers are an attractive choicein many areas, since it is possible to control the way in whichthey are manufactured; more specifically, pathways tomanipulate the architecture, the mechanical properties and thedegradation times have been identified. In this work,L-lactide, 1,5-dioxepan-2-one and ε-caprolactone were usedas monomers to synthesize polymers with different architecturesby ring-opening polymerization. LÄS MER

  3. 2. Design of polyester and porous scaffolds

    Författare :Karin Odelius; Ann-Christine Albertsson; Monica Ek; Torbjörn Mathisen; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; ring-opening polymerization; porous scaffold; L-lactide; 5-dioxepane-2-one; ε-caprolactone; spirocyclic initiator; star-shaped polyester; Polymer chemistry; Polymerkemi;

    Sammanfattning : The use of synthetic materials for tissue and organ reconstruction, i. e. tissue engineering, has become a promising alternative to current surgical therapies and may overcome the shortcomings of the methods in use today. LÄS MER

  4. 3. Macromolecular design and architecture of aliphatic polyesters

    Författare :Karin Odelius; Ann-Christine Albertsson; Helmut Keul; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Ring-opening polymerization; L-lactide; 1; 5-dioxepane-2-one; ε-caprolactone; Polymerization kinetics; Star-shaped architecture; Spirocyclic tin initiator; Polymer chemistry; Polymerkemi;

    Sammanfattning : Public health care has reached a level where tissue or organ reconstruction by means of biodegradable short-term implants via e.g. tissue engineering will be practicable in the near future. LÄS MER

  5. 4. Asymptotic analysis of a nonlinear partial differential equation in a semicylinder

    Författare :Peter Rand; Henrik Shahgolian; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; MATHEMATICS; MATEMATIK;

    Sammanfattning : We study small solutions of a nonlinear partial differential equation in a semi-infinite cylinder. The asymptotic behaviour of these solutions at infinity isdetermined. First, the equation under the Neumann boundary condition is studied. LÄS MER

  7. 5. Strategies for Utilizing Biobased and Recycled Resources for Polylactide Plasticization

    Författare :Xi Yang; Minna Hakkarainen; Karin Odelius; Youssef Habibi; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Polylactide; poly 3-hydroxybutyrate ; poly butylene succinate-co-adipate ; bio-based; microwave; reactive extrusion; recycling; plasticizing; migration resistance; crystallization; polylaktid; poly 3-hydroxibutyrat ; poly butylen succinat-sam-adipat ; biobaserade; mikrovågsugn; reaktiv extrudering; återvinning; mjukgörare; migrationsmotstånd; kristallisering; Fiber- och polymervetenskap; Fibre and Polymer Science;

    Sammanfattning : There are many aspects that should be considered to achieve truly "environmental friendly" and "sustainable" materials. These include the raw material resource, the energy consumption, the chemicals generated and used, the emissions during production, processing, transportation, disposal and so on. LÄS MER