Sökning: "nanocellulose"

Visar resultat 41 - 45 av 99 avhandlingar innehållade ordet nanocellulose.

  1. 41. Nanocelluloses - surface modification and use in functional materials

    Författare :Michaela Salajková; Lars Berglund; Gunnar Westman; Anna Finne; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Nanocellulose; surfactant; surface modification; papermaking process; quaternary ammonium salt;

    Sammanfattning : Cellulose nanocomposites offer interesting potential in terms of improved properties and new functionalities compared with microcomposites. Preparation from colloidal suspensions is promising, since high reinforcement content is possible and a wide range of constituents can be used. LÄS MER

  3. 42. Multifunctional Foams Based on Nanomaterials from Plants and Textile Waste

    Författare :Carina Schiele; Lennart Bergström; Emily Cranston; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; multifunctional foams; nanofibers; aramid; cotton; nanocellulose; heat transport; thermal conductivity; electromagnetic shielding; supercritical drying; freeze drying; materialkemi; Materials Chemistry;

    Sammanfattning : Nanoparticles extracted from plants or textile waste are promising candidates for the design of sustainable materials. In this thesis, I explored how nanoparticles extracted from trees and from Kevlar and cotton textile wastes can be processed to form lightweight composite foams. LÄS MER

  4. 43. Chemical Modification of Electrospun Cellulose Nanofibers

    Författare :Johannes Thunberg; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Cellulose Dissolution; Ionic liquid; Polypyrrole; Zeolitic Imidazolate Framework; Nanocellulose; Electrospinning; Cellulose; Metal-organic Framework;

    Sammanfattning : The forest industry is a large part of the Swedish economy and the export of pulp, paper and wood products constitutes 11% of the total Swedish export of goods. The main product of a pulp mill is purified cellulose, which has many great properties like biodegradability and non-toxicity. LÄS MER

  5. 44. Nanocellulose based 3D printed hydrogel scaffolds for cartilage and bone regeneration : Tuning of composition, pore structure and functions

    Författare :Sahar Sultan; Aji P. Mathew; Lennart Bergström; Gustav Nyström; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Nanocellulose materials; 3D printing; gradient biphasic hydrogel scaffolds; metal-organic frameworks; hydroxyapatite; cartilage and bone regeneration; osteochondral scaffolds; materialkemi; Materials Chemistry;

    Sammanfattning : Biobased-materials with customized scaffolds have played a prominent role in the success of tissue engineering (TE). Cellulose nanomaterials (CNM) isolated from the abundant biopolymer, cellulose, is explored in this thesis for TE engineering due to its versatile properties such as biocompatibility, high specific strength, surface functionality and water retention capacity. LÄS MER

  7. 45. Biofabrication, Biomechanics and Biocompatibility of Nanocellulose-based Scaffolds for Auricular Cartilage Regeneration

    Författare :Hector Martinez Avila; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Nasoseptal Chondrocytes; Tissue Engineering; Auricular Cartilage; Auricular reconstruction; Bacterial Nanocellulose; Neocartilage; Nanofibrillated Cellulose; Mononuclear Cells; 3D Bioprinting;

    Sammanfattning : In about 2:10,000 births the external part of the ear, the auricle, is severely malformed or absent. Furthermore, tumors and trauma can cause defects to the auricle. LÄS MER