Sökning: "TEMPO-mediated oxidation"

Visar resultat 1 - 5 av 13 avhandlingar innehållade orden TEMPO-mediated oxidation.

1. 1. Structural and Electrochemical Properties of Functionalized Nanocellulose Materials and Their Biocompatibility

   Författare :Daniel O Carlsson; Maria Strømme; Leif Nyholm; Albert Mihranyan; Eva Malmström Jonsson; Uppsala universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Nanocellulose; nanofibrillated cellulose; Cladophora cellulose; polypyrrole; TEMPO-mediated oxidation; composite; porosity; cytocompatibility; blood compatibility; Engineering Science with specialization in Nanotechnology and Functional Materials; Teknisk fysik med inriktning mot nanoteknologi och funktionella material;

   Sammanfattning : Nanocellulose has received considerable interest during the last decade because it is renewable and biodegradable, and has excellent mechanical properties, nanoscale dimensions and wide functionalization possibilities. It is considered to be a unique and versatile platform on which new functional materials can be based. LÄS MER

3. 2. Oxidized Cladophora nanocellulose derivatives : Functionalization towards biocompatible materials

   Författare :Igor Rocha; Jonas Lindh; Natalia Ferraz; Albert Mihranyan; Maria Strömme; Eva Malmström Jonsson; Uppsala universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Cladophora nanocellulose; TEMPO oxidation; periodate oxidation; sulfonation; cellulose beads; surface properties; biomaterials; cell studies; hemocompatibility;

   Sammanfattning : Nanocellulose is a promising candidate for biomedical applications because of its enhanced mechanical properties, increased surface area and greater porosity compared to bulk cellulose.This thesis investigates the functionalization of Cladophora nanocellulose and evaluates the influence of these modifications on physicochemical properties and biocompatibility of the material. LÄS MER

4. 3. Chemical Modification of Nanostructured Wood for Functional Biocomposites

   Författare :Shennan Wang; Qi Zhou; Gustav Nyström; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Wood; nanostructured materials; nanocellulose; delignification; oxidation; crosslinking; amination; MOFs; transparent film; hydrogel; aerogel; biocomposites; mechanical properties; thermochromic materials; CO2 capture; protein immobilization.; Biotechnology; Bioteknologi;

   Sammanfattning : Recently emerged top-down processing concept has provided new insights into the chemical modification of wood at the nanoscale. Nanostructured wood with naturally aligned cellulose microfibrils, cell wall nanoporosity, and precisely tuned chemical composition has opened up numerous possibilities for advanced design of functional materials. LÄS MER

5. 4. The biology and properties of wood for nanocellulose production

   Författare :Anne Bünder; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
   Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

   Sammanfattning : Wood is a renewable and environmentally friendly raw material envisioned for the production of novel materials. In this interdisciplinary thesis project, I investigated genetic factors controlling cellulose biosynthesis, cellulose microfibril dimensions, wood mechanical properties and factors that influence nanocellulose extraction from wood. LÄS MER

7. 5. Multifunctional Glyconanomaterials : Applications in Biorecognition and Drug Delivery

   Författare :Zhou Juan; Ramström Olof; Ravin Narain; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; glyconanomaterials; cellulose nanocrystals; chitin nanocrystals; mesoporous silica nanoparticles; lectin; biorecognition; drug delivery; bacteria; cytotoxicity; perfluorophenylazide; fluorescent dye; carbohydrate ligands.;

   Sammanfattning : This thesis consists of three parts, which revolve around the fabrication of multifunctional glyconanomaterials (cellulose nanocrystals, chitin nanocrystals, mesoporous silica nanoparticles) and the development of their applications in biorecognition and nanomedicine.Part one presents a detailed introduction to glyconanomaterials, focusing on cellulose nanocrystals, chitin nanocrystals and mesoporous silica nanoparticles, including their general preparations, properties and applications. LÄS MER