Search for dissertations about: "Nanofibrillar"

Showing result 1 - 5 of 11 swedish dissertations containing the word Nanofibrillar.

  2. 1. Nanofibrillar Materials for Organic and Printable Electronics

    Author : Ana Lopez Cabezas; Li-Rong Zheng; Shi-Li Zhang; Zhi-Bin Zhang; Donald Lupo; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Organic electronics; polyaniline; carbon nanotubes; composite; spray coating; solution processability; morphology; electrical conductivity; ageing; sensor; system integration;

    Abstract : In recent years, organic electronics have attracted great attention due to their multiple advantages such as light weight, flexibility, large area fabrication and cost-effective production processes. The recent progress in fabricating organic electronic devices has been achieved with the development of new materials which provide competing functionalities to the electronics devices. READ MORE

  4. 2. Microfibrillated cellulose: Energy-efficient preparation techniques and applications in paper

    Author : Mikael Ankerfors; Lars Wågberg; Akira Isogai; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Microfibrillated cellulose; microfibrillar cellulose; nanofibrillated cellulose; nanofibrillar cellulose; cellulose nanofibrils; nanocellulose; MFC; NFC; CNF; production techniques; energy efficient; gel properties; films; enzymes; carboxymethylation; carboxymethyl cellulose; CMC; mechanical properties; oxygen barrier; homogenization; linting; papermaking; Fiber- och polymervetenskap; Fibre and Polymer Science;

    Abstract : This work describes three alternative processes for producing microfibrillated cellulose (MFC; also referred to as cellulose nanofibrils, CNF) in which bleached pulp fibres are first pretreated and then homogenized using a high-pressure homogenizer. In one process, fibre cell wall delamination was facilitated by a combined enzymatic and mechanical pretreatment. READ MORE

  5. 3. Microfibrillated cellulose : Energy-efficient preparation techniques and key properties

    Author : Mikael Ankerfors; Lars Wågberg; Minna Hakkarainen; Paul Gatenholm; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Microfibrillated cellulose; microfibrillar cellulose; nanofibrillated cellulose nanofibrillar cellulose; nanocellulose; MFC; NFC; production techniques; energy efficient; gel properties; films; enzymes; carboxymethylation; carboxymethyl cellulose; CMC; mechanical properties; oxygen barrier; homogenization;

    Abstract : This work describes three alternative processes for producing microfibrillated cellulose (MFC) in which pulp fibres are first pre-treated and then homogenized using a high-pressure homogenizer. In one process, fibre cell wall delamination was facilitated with a combined enzymatic and mechanical pre-treatment. READ MORE

  6. 4. Recombinant spider silk for biomedical applications - from functionalizing surfaces of synthetic materials to in vitro modelling of tissues

    Author : Christos Panagiotis Tasiopoulos; My Hedhammar; Antonella Motta; KTH; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; recombinant spider silk; surface functionalization; in vitro tissue models; membrane-based models; barrier tissues; cell co-culture; tissue engineering; Bioteknologi; Biotechnology;

    Abstract : Spider silk is a natural protein-based material known for its medicinal use and remarkable mechanical properties. Structures made thereof are both strong and elastic and have been shown to be favorable matrices for tissue engineering. READ MORE

  7. 5. Spider Silk Nanostructuring and its Applications for Tissue Engineering

    Author : Linnea Gustafsson; Wouter van der Wijngaart; David Kaplan; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; recombinant spider silk; nanostructures; microstrucutres; nanowires; nanochains; nanodisks; nanomembranes; tissue engineering; in-vitro models; medical technology; health technology; nanomedicine; rekombinant spindelsilke; nanostrukturer; mikrostrukturer; nanotrådar; nanokedjor; nanodiskar; nanomembran; vävnadsteknik; in vitro-modeller; medicinsk teknik; hälsoteknik; nanomedicin; Electrical Engineering; Elektro- och systemteknik;

    Abstract : This thesis introduces new ways to produce micro-and nanostructures of recombinant spider silk and explores ways to characterize their topography, mechanical properties, cell compatibility, and permeability. The suitability of the formed structures for applications within tissue engineering, primarily in vitro tissue modeling, is also investigated. READ MORE