Sökning: "nanofibrils"

Visar resultat 11 - 15 av 89 avhandlingar innehållade ordet nanofibrils.

1. 11. Porous Materials from Cellulose Nanofibrils

   Författare :Nicholas Tchang Cervin; Lars Wågberg; Björn Lindman; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Poröst material; cellulosa nanofibriller; Fiber- och polymervetenskap; Fibre and Polymer Science;

   Sammanfattning : In the first part of this work a novel type of low-density, sponge-like material for the separation of mixtures of oil and water has been prepared by vapour deposition of hydrophobic tri-chloro-silanes on ultra-porous cellulose nanofibril (CNF) aerogels. To achieve this, a highly porous (>99%) robust CNF aerogel with high structural flexibility is first formed by freeze-drying an aqueous suspension of the CNFs. LÄS MER

3. 12. Surface modification approaches of cellulose nanofibrils and their effect on dispersibility

   Författare :Tahani Kaldéus; Eva Malmström; Tekla Tammelin; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; cellulose nanofibrils; colloidal stability; re dispersibility; surface modification; bio-nanocomposites; interface; cellulosa nanofibriller; kolloidal stabilitet; re dispergerbarhet; ytmodifiering; bio-nanokompositer; gränssnitt; Fiber- och polymervetenskap; Fibre and Polymer Science;

   Sammanfattning : In the strive to find and develop sustainable bio-based materials an increased interest for nanocellulosic materials as attractive alternatives has arisen during the past decades. This can be attributed to their abundant renewability, remarkable inherent mechanical properties and their capability to be chemically modified. LÄS MER

4. 13. The effect of wood properties on oxidative isolation of cellulose nanofibrils and characterization of networks

   Författare :Simon Jonasson; Kristiina Oksman; Lars Wågberg; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; cellulose nanofibrils; wood; TEMPO-oxidation; nanofibril network; lignin; tension wood; transgenic tree; Trä och bionanokompositer; Wood and Bionanocomposites;

   Sammanfattning : Wood is a natural resource that has been an integral part of society for as long as humans have been on Earth. From serving as fuel for fire and construction material the applications of wood has been developed in modern times and only surged as a consequence of societal strive for sustainability and usage of green resources. LÄS MER

5. 14. Hierarchical Assembly Investigations and Multiscale Characterization of Protein-based Materials : Insights from Whey Protein Nanofibrils and Recombinant Spider Silk Microspheres

   Författare :Eirini Ornithopoulou; My Hedhammar; Thomas Crouzier; Christina Divne; Tim Melander Bowden; KTH; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Hierarchical Assembly; Protein-based materials; Whey Protein Nanofibrils; β-Lactoglobulin; Recombinant Spider Silk; Microspheres; Biomedical Applications; Surface Biofunctionalization; Hierarkisk montering; Proteinbaserade material; Vassleprotein nanofibriller; β-Laktoglobulin; Rekombinant spindelsilke Mikrosfärer; Biomedicinska tillämpningar; Ytbiokonjugering; Biotechnology; Bioteknologi;

   Sammanfattning : Protein-based materials, with their unique properties of combining high strength, while maintaining elasticity, and their inherent biocompatibility, hold immense potential for various applications. In order to harness these properties, we need to understand and control how protein building blocks come together to form hierarchically structured materials. LÄS MER

7. 15. Plant protein nanofibrils : characterising properties for future food

   Författare :Anja Herneke; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
   Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

   Sammanfattning : This thesis explores the potential of protein nanofibrils (PNFs) as an ingredient to generate structure in food. Proteins from whey and from plants were used to form PNFs, with particular focus on proteins extracted from plants. PNFs were formed by heating (85-90 °C) the proteins at pH 2 for 24-96 h. LÄS MER