Sökning: "Bio-based"

Visar resultat 1 - 5 av 73 avhandlingar innehållade ordet Bio-based.

  1. 1. High Performance Bio-based Composites Mechanical and Environmental Durability

    Detta är en avhandling från Luleå tekniska universitet

    Författare :Newsha Doroudgarian; Luleå tekniska universitet.; [2016]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Polymera konstruktionsmaterial; Polymeric Composite Materials;

    Sammanfattning : The presented work is a part of the ongoing effort on the development of high performance bio-based composites with enhanced durability, under static and dynamic mechanical loading including the exposure to elevated humidity. The impact of relative humidity on the performance of cellulosic fibers (natural and regenerated), bio-based resins and their composites was studied. LÄS MER

  2. 2. Bio-based Composites from Soybean Oil Thermosets and Natural Fibers

    Detta är en avhandling från Chalmers University of Technology

    Författare :Kayode Adekunle; Högskolan i Borås.; [2011]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Resource Recovery; Resursåtervinning; bio-based thermoset resins; natural fibres; hybrid composites; renewable resources; mechanical analysis; compression molding; lyocell fiber; Energi och material; hybrid composite; natural fiber; Bio-based thermoset resin;

    Sammanfattning : In order to reduce over-dependency on fossil fuels and to create an environment that is free of non-degradable plastics, and most importantly to reduce greenhouse gas emission, bio-based products are being developed from renewable resources through intense research to substitute conventional petrochemical-based plastics with renewable alternatives and to replace synthetic fibers with natural fibers. Many authors have done quite a lot of work on synthesizing polymers from renewable origin. LÄS MER

  3. 3. Sustainable synthetic pathways towards the formation of bio-based polymeric materials

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Susana Torrón; KTH.; [2016]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; bio-based; polymers; materials; Kemi; Chemistry;

    Sammanfattning : Increasing environmental and social awareness arising from the use of oil as main source of raw materials, has awaken the interest of many scientists to explore new synthetic pathways for polymer production. These new approaches embrace the use of alternative feedstock and sustainable synthetic routes aiming for enhancing biodegradability and recyclability. LÄS MER

  4. 4. Bio-based barriers from wood hydrolysates : A pilot-scale approach

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Soheil Saadatmand; KTH.; [2014]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Wood hydrolysate; biorefinery; oxygen permeability; multilayer barriers; food packaging.; vedhydrolysat; syrgaspermeabilitet; barriärskikt; livsmedelsförpackning;

    Sammanfattning : Wood hydrolysates (WHs) are liquids extracted from the hydrothermal treatment of wood. They exist as the byproduct of forestry industries such as the dissolving pulp and fiberboard industries. WHs are hemicellulose-based with a large share of lignin in the chemical composition. LÄS MER

  5. 5. Environmental Assessment of Emerging Bio-based Production - Possibilities in a Future Bio-economy

    Detta är en avhandling från Environmental and Energy Systems Studies, Lund university

    Författare :Anna Ekman; Lunds universitet.; Lund University.; [2012]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Biorefinery; Bio-based chemicals; Life cycle assessment; Industrial biotechnology; Bio-economy;

    Sammanfattning : The bio-economy has been put forward as a strategy to increase economic growth without this leading to increased emissions of greenhouse gases. A key concept behind the bio-economy is the increased use of biomass for applications such as the production of bio-based chemicals and materials but also an increased importance for biotechnology and biorefinery systems in the production of these products. LÄS MER