Search for dissertations about: "natural fibres"

Showing result 11 - 15 of 138 swedish dissertations containing the words natural fibres.

2. 11. Renewable Composites Prepared from Biobased Thermoset Resins

   Author : Dan Åkesson; Högskolan i Borås; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Renewable; natural fibre; composite; biobased thermoset resin;

   Abstract : In our efforts to create a more sustainable society, several researchers have tried to prepare composites from renewable materials in recent years. The use of natural fibres for reinforcement of composites has been relatively well studied. READ MORE

4. 12. Modification of fluff pulp fibres: Cross-linking and alkali extraction

   Author : Kristoffer Lund; Chalmers tekniska högskola; []
   Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; fibre network; dry defibration; network strength; fluff pulp; Absorption; cross-linking; alkali extraction; kraft pulp;

   Abstract : Fluff pulp has been one of the key components of hygienic products, such as diapers, for many years. Fluff pulp is dry defibrated and air-laid into the absorption core of diapers. The introduction of superabsorbent polymers (SAPs) in the 1980s decreased the dependence on fluff pulp, as the SAPs became the main absorbing material. READ MORE

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

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

   Abstract : 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. READ MORE

6. 14. Non-Invasive Multidimensional Imaging Applied on Biological Substances

   Author : Anders Kaestner; Högskolan i Halmstad; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Microwave propagation; Tomography; Polarimetry; Frequency estimation; Anisotropic media; Wood; Muscles; Paper; NATURAL SCIENCES; NATURVETENSKAP;

   Abstract : This thesis presents the research and development of a microwave in-strument to capture tomographic information from the inner structure ofthe biological sample. The principle of the instrument is based on theanisotropy introduced by the fibres in materials such as wood and musclesin terms of information regarding changes in the fibre structure. READ MORE

7. 15. Assembly characteristics of xylan rich extracts from birch

   Author : Peter Westbye; Chalmers tekniska högskola; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Xylan; Cellulose fibres; Adsorption; glucuronoxylan; Extraction; Aggregates; Solution properties;

   Abstract : The greenhouse effect is one of the most important environmental problems that mankind has to solve. One solution could be the utilization of biomass to create new materials and fuels. Traditionally wood has been used as timber and as a raw material for pulp and paper production. READ MORE