Search for dissertations about: "nanofibrils orientation"

Showing result 1 - 5 of 12 swedish dissertations containing the words nanofibrils orientation.

2. 1. Tailoring Cellulose Nanofibrils for Advanced Materials

   Author : Núria Butchosa Robles; Qi Zhou; Kristiina Oksman; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; cellulose nanofibrils; bacterial cellulose; surface modification; carboxymethyl cellulose; polyethylene glycol; chitin nanocrystals; bactericidal activity; nanofibrils orientation; water redispersability; mechanical properties; dye removal; Fiber- och polymervetenskap; Fibre and Polymer Science;

   Abstract : Cellulose nanofibrils (CNFs) are nanoscale fibers of high aspect ratio that can be isolated from a wide variety of cellulosic sources, including wood and bacterial cellulose. With high strength despite of their low density, CNFs are a promising renewable building block for the preparation of nanostructured materials and composites. READ MORE

4. 2. Two-dimensional Nanocomposites Based on Cellulose Nanofibrils and Graphene Oxide

   Author : Hanieh Mianehrow; Lars Berglund; Aji Mathew; KTH; []
   Keywords : Cellulose nanofibrils; graphene oxide; orientation; reinforcement; oxygen barrier; bio-nanocomposite; moisture; molecular adhesion; interfacial shear strength.; Nanocellulosa; grafenoxid; orientering; förstärkning; syrebarriär; bionanokomposit; fukt; molekylär adhesion; skjuvhållfasthet hos gränsytan.; Fiber- och polymervetenskap; Fibre and Polymer Science;

   Abstract : Two-dimensional (2D) nanocomposites based on cellulose nanofibrils (CNF) and 2D nanomaterials are of interest as sustainable materials combining functional and structural properties. To achieve reinforcement effects from 2D nanomaterials, their orientation and dispersion state in the CNF matrix are important. READ MORE

5. 3. Orientation of elongated, macro and nano-sized particles in macroscopic flows

   Author : Karl Håkansson; Danel Söderberg; Fredrik Lundell; Lisa Prahl Wittberg; Jean-Yves Cavaillé; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Orientation; fibre; fibril; turbulent channel flow; particle streaks; flow focusing; cellulose nanofibrils; extensional flow; Smoluchowski; rotary diffusion;

   Abstract : Non-spherical particles are present all around us, in biological, industrial and environmental processes. Making predictions of their impact on us and systems in our vicinity can make life better for everyone here on earth. READ MORE

6. 4. Functional Nanocellulose–Tannin Materials Inspired by Nature and Traditional Processes

   Author : Konstantin Kriechbaum; Lennart Bergström; Alain Dufresne; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Cellulose; Nanofibrils; Tannin; Biobased; Films; Foams; Moisture resistance; Energy efficiency; Materials Chemistry; materialkemi;

   Abstract : Renewable and biodegradable alternatives to fossil-based materials are essential as concerns over depleting finite resources and the pollution of our ecosystems are growing. Abundant, highly anisotropic, and mechanically strong cellulose nanofibrils (CNF) are attractive building blocks for the fabrication of high-performance biobased materials that can compete with their conventional fossil-based counterparts. READ MORE

7. 5. Elasticity of Cellulose Nanofibril Materials

   Author : Gabriella Josefsson; E. Kristofer Gamstedt; Karin de Borst; Uppsala universitet; []
   Keywords : Cellulose nanofibrils; Elastic properties; Micromechanics; Composites; Engineering science with specialization in Applied Mechanics; Teknisk fysik med inriktning mot tillämpad mekanik;

   Abstract : The demand for renewable load-carrying materials is increasing with increasing environmental awareness. Alternative sources for materials manufacturing and design have to be investigated in order to replace the non-biodegradable materials. READ MORE