Sökning: "Cellulose Nano Fibrils"

Visar resultat 1 - 5 av 14 avhandlingar innehållade orden Cellulose Nano Fibrils.

  1. 1. Design of Cellulose-based Materials by Supramolecular Assemblies

    Författare :Tobias Benselfelt; Lars Wågberg; Torbjörn Pettersson; Joseph Schlenoff; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Adhesion; adsorption; alginate; assemblies; biodegradable; biomaterials; biopolymers; cellulose; cellulose nanofibrils; CNFs; gas barrier; hemicellulose; interfaces; ion-ion correlation; latex; layer-by-layer; metal-ligand complexes; montmorillonite; multivalent ions; packaging; PISA; polyelectrolyte multilayers; polyelectrolytes; polysaccharides; RAFT; renewable; specific ion effects; supramolecular; surfaces; sustainable; thin films; water-resilient; xyloglucan; Fiber- och polymervetenskap; Fibre and Polymer Science;

    Sammanfattning : Due to climate change and plastic pollution, there is an increasing demand for bio-based materials with similar properties to those of common plastics yet biodegradable. In this respect, cellulose is a strong candidate that is already being refined on a large industrial scale, but the properties differ significantly from those of common plastics in terms of shapeability and water-resilience. LÄS MER

  3. 2. Phosphorylated Cellulose Nanofibrils : A Nano-Tool for Preparing Cellulose-Based Flame-Retardant Materials

    Författare :Maryam Ghanadpour; Lars Wågberg; Jeffrey W. Gilman; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; phosphorylated cellulose nanofibrils; flame-retardant; Fiber- och polymervetenskap; Fibre and Polymer Science;

    Sammanfattning : The growing awareness of the need for a circular society and a circular chemistry has spurred the interest in using wood-based cellulose as a raw material for the preparation of new macroscopic devices and construction materials. The interest has been particularly focused on cellulose nanofibrils (CNF), which has led to the development of new material concepts through a nanoscale bottom-up engineering using renewable CNF. LÄS MER

  4. 3. 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

  5. 4. Biomedical Applications of Bacterial Cellulose Fermentation, Morphology and Surface Properties

    Författare :Aase Katarina Bodin; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; biocompatibility; xyloglucan epitopes; mechanical properties; cell adhesion; tubular fermentation; morphology; Bacterial cellulose; surface properties; meniscus mold; crystal formation.; ozonation; adsorption;

    Sammanfattning : Because average life expectancy has increased and peoples lifestyles have changed, degenerative diseases have become a critical issue. The demand for biomedical materials to replace or improve major body systems (skeletal, circulatory and nervous, etc.) will increase as people strive to maintain good quality of life. LÄS MER

  7. 5. Utilizing Biopolymers in 3D Tumor Modeling and Tumor Diagnosis

    Författare :Negar Abbasi Aval; Torbjörn Pettersson; Aman Russom; Maria Tenje; KTH; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; 3D tumor modeling; Spheroids; Cellulose Nano Fibrils; Layer by Layer; Extracellular matrix; Circulating Tumor Capturing; Pancreatic ductal adenocarcinoma PDAC ; 3D-tumörmodellering; Sfärer; Cellulosa; Lager-på-lager; Extracellulärmatris; Infångning av cirkulerande tumörceller; Mänskliga Duktala Adenocarcinom-Hepatocyter; Fiber- och polymervetenskap; Fibre and Polymer Science;

    Sammanfattning : Cancer represents a significant global public health challenge and ranks as the second mostcommon cause of death in the United States. The onset of cancer entails an initial phasewhere cells lose their polarity and disconnect from the normal basement membrane, allowingthem to form distinct three-dimensional (3D) configurations that interact with adjacent cellsand the surrounding microenvironment. LÄS MER