Search for dissertations about: "Bio-based polymers"

Showing result 21 - 25 of 40 swedish dissertations containing the words Bio-based polymers.

2. 21. Cryogels Based on Crosslinked Cells as Green Biocatalysts for Biotechnology

   Author : Oksana Zaushitsyna; Bioteknik; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Cells; Crosslinkers; PVA PEI; Immobilization; Biocatalysts; Biobased chemicals; Biotransformation; stress tolerance;

   Abstract : Abstract Due to the finite nature of fossil resources and their environmental impact, such as greenhouse gases and climate change, the bio-based production of chemicals, materials and fuels is the subject of extensive research in industrial biotechnology. Biotransformation and fermentation are considered to be mild, “green” processes that make use of effective and reliable biocatalysts to provide bio-based chemicals. READ MORE

4. 22. Effects of plasticizing and crosslinking on coatings based on blends of starch-PVOH and starch-lignin

   Author : Asif Javed; Henrik Ullsten; Peter Rättö; Lars Järnström; Douglas Bousfield; Karlstads universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Citric acid; Glycerol; Polyethylene glycol; Barrier coatings; Starch; Lignin; Mechanical properties; Poly vinyl alcohol ; Creasing; Adhesion; Cross-linking; Extrusion coating; Chemical Engineering; Kemiteknik;

   Abstract : A barrier material is usually needed on a fiber-based food package to protect the packed food from gases and moisture and thus maintain its quality. Barrier materials presently used in food packaging applications are mostly petroleum-based polymers. READ MORE

5. 23. Development of biocomposites from lactic acid thermoset resins and cellulose fibre reinforcements

   Author : Fatimat Oluwatoyin Bakare; Minna Hakkarinen; Högskolan i Borås; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; lactic acid; thermoset resin; renewable resources; natural fibre; regenerated cellulose fibre; composite; Resursåtervinning; Resource Recovery;

   Abstract : Synthesis of polymers from renewable origin has been reported by many authors and it has been found out that it has enormous potential and can serve as alternative to conventional thermoplastics and thermosets in many applications. The use of these renewable resources will provide sustainable platforms to substitute fossil fuel-based materials. READ MORE

6. 24. From Responsive Interfaces to Honeycomb Membranes by Controlled Radical Polymerisation

   Author : Daniel Nyström; Anders Hult; Søren Hvilsted; KTH; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Isoporous membranes; Silica nanoparticles; ATRP; Functional surfaces; cellulose; Polymer chemistry; Polymerkemi;

   Abstract : In this study, surface modification of both organic and inorganic substrates (in terms of cellulose and silica nanoparticles, respectively) has been explored using surface-initiated atom transfer radical polymerisation (ATRP). The desire to modify bio-based materials to fit into new application areas and the need for bio-based materials with improved material properties is steadily increasing due to environmental concern. READ MORE

7. 25. Design of Cellulose-Based Electrically Conductive Composites: Fundamentals, Modifications, and Scale-up

   Author : Karishma Jain; Lars Wågberg; Per A. Larsson; Davide Beneventi; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Cellulose nanofibrils; PEDOT:PSS; chemically-modified cellulose fibers; fundamental interactions; bioelectronics; energy storage; conductive paper production; large-scale production; Fiber- och polymervetenskap; Fibre and Polymer Science;

   Abstract : Modern demand for consumer electronics is fueling the generation of 'E-waste.' Furthermore, theraw materials and manufacturing methods used in the fabrication of electronics are not sustainable. READ MORE