Sökning: "dynamic-mechanical behavior"

Visar resultat 1 - 5 av 8 avhandlingar innehållade orden dynamic-mechanical behavior.

  1. 1. Strategies for building polymers from renewable sources : Using prepolymers from steam treatment of wood and monomers from fermentation of agricultural products

    Författare :Margaretha Söderqvist Lindblad; KTH; []
    Nyckelord :renewable sources; biodegradable polymers; hemicellulose; 2-hydroxyethyl methacrylate; modification of hemicellulose; methacrylation reaction; rheology measurements; dynamic-mechanical behavior; 1; 3-propanediol; 1; 4-cyclohexanedimethanol; succinic ac;

    Sammanfattning : A strategic research area today is development of polymericproducts made from renewable sources. The ways of utilizingrenewable sources studied in this thesis are using 1)prepolymers obtained by steam treatment of wood and 2) monomersobtainable by fermentation of agricultural products. LÄS MER

  3. 2. Hemicellulose as barrier material

    Författare :Hartman Jonas; Ann-Christine Albertsson; Gunnar Henriksson; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Hemicellulose; galactoglucomannan; plasma surface treatment; vaporphase grafting; benzylation; contact angle; oxygen permeability; solution casting; Cellulose and paper engineering; Cellulosa- och pappersteknik;

    Sammanfattning : Polysaccharides constitute an important source of raw materials for the packaging industry today. Polysaccharides have good natural barrier properties which are necessary for packaging films. Cellulose is the forerunner among renewable polymers for such applications. Hemicelluloses represent a new interesting breed of barrier materials. LÄS MER

  4. 3. Synthesis and characterization of dendritic architectures

    Författare :Andreas Nyström; Anders Hult; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Biochemistry; Biokemi; Chemistry; Kemi;

    Sammanfattning : The goal of this work was to synthesize different dendritic architectures and evaluate the effect from the dendrons on the material properties. The work presented in this licentiate thesis, Synthesis and Characterization of Dendritic Architectures, is divided into major parts. LÄS MER

  5. 4. Waterborne Alkyd-Acrylic Hybrids with High Solids Content -Preparation and Properties-

    Författare :Mehrnoush Jowkar Deriss; Centrum för analys och syntes; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; biopolymers; Polymer technology; Polymerteknik;

    Sammanfattning : The work presented in this thesis concerns the preparation, characterization and film formation of a waterborne alkyd-acrylic hybrid system with high solids content of about 80 %. The alkyd-acrylic hybrids were prepared by slowly adding a linseed oil alkyd to an acrylic latex dispersion under stirring. LÄS MER

  7. 5. Correlating structure of (arabino)xylans and their derivatives to dispersibility and film properties

    Författare :Ratchawit Janewithayapun; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Wood glucuronoxylans and wheat bran arabinoxylan represent significant sources of underutilized natural polymers. In this work, I aim to address a key challenge to their effective valorization, which is their complex chemical-structure-property relationship. LÄS MER