Search for dissertations about: "cellulose based hydrogel"

Showing result 1 - 5 of 22 swedish dissertations containing the words cellulose based hydrogel.

2. 1. Swelling of Cellulose Fibrillar Matrices and Gels

   Author : Pernilla Karlsson; Lars Wågberg; Per Tomas Larsson; Eero Kontturi; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; swelling; hydrogel; cellulose; wood; cellulose fibrils; Fiber- och polymervetenskap; Fibre and Polymer Science;

   Abstract : One of the major challenges of today´s society is to find a sustainable way to create a living based on the resources on earth. It is a challenge that includes a transition from fossil-based materials to renewable/biodegradable raw materials and also the creation of an environmentally friendly circular material flow. READ MORE

4. 2. 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

5. 3. Modified and hybrid cellulose-based materials for water purification

   Author : Dimitrios Georgouvelas; Aji Mathew; Henrikki Liimatainen; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Cellulose; lignocellulose; membranes; water treatment; heavy metal adsorption; dye adsorption; scalability; materialkemi; Materials Chemistry;

   Abstract : The need for clean water has led to the development of several different water treatment methods as well as to a large number of organic, inorganic, hybrid and/or composite materials that are used in these methods. Cellulose, being a highly abundant biopolymer with meritorious properties, such as high mechanical strength, tunable surface chemistry, high aspect ratio and surface area, to mention a few, is exploited in the current thesis for water treatment applications. READ MORE

6. 4. Wood-Based Nanocellulose In Lithium Ion Batteries and Electrochemical Coatings

   Author : Hyeyun Kim; Ann M. Cornell; Davide Beneventi; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; cellulose nanofibers; lithium ion battery; separator; electro-precipitation; hydrogel; Chemical Engineering; Kemiteknik;

   Abstract : Lithium ion batteries contain diverse functional polymeric materials, e.g. binders and separators. Naturally self-assembled wood cellulose can be disintegrated to nanosized particles with a diversity of morphology by top-down processes, adjusting the manufacturing parameters. READ MORE

7. 5. Polysaccharides from red and green seaweed : Extraction, characterisation and applications

   Author : Niklas Wahlström; Ulrica Edlund; Fredrik Gröndahl; Federica Chiellini; KTH; []
   Keywords : biorefinery; seaweed; macroalgae; Ulva; Porphyra; ulvan; porphyran; cellulose; gelatin; hydrogel; heavy metal; methylene blue; Fiber- och polymervetenskap; Fibre and Polymer Science;

   Abstract : Cultivation of seaweed has been conducted for centuries in Asia, but is largely undeveloped in Sweden even though there is potential for this industry. Seaweed offers benefits compared with land-based biomass cultivation. READ MORE