Search for dissertations about: "polymer gels"

Showing result 21 - 25 of 72 swedish dissertations containing the words polymer gels.

  2. 21. Mechanical and swelling properties of hydrogels

    Author : Ting Yang; Anders Hult; Michael Malkoch; Jöns Hilborn; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : Hydrogels have been used as one of the novel soft materials in many biomedical applications such as drug delivery and tissue engineering for recent decades.In the main part of this work, bi-functional poly(ethylene glycol) (PEG) precursors with either thiols (PEG-SH) or allyls (PEG-Al) , covering molecular weights from 3 kDa to 8 kDa were synthesized and thoroughly characterized by 1H NMR, 13C NMR, FT-Raman and MALDI-TOF techniques. READ MORE

  4. 22. Exploring bis-MPA Based Dendritic Structures in Biomedicine

    Author : Oliver Andrén; Michael Malkoch; Peter Löwenhielm; Sandra Garcia Gallego; Karen Wooley; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Dendrimers; Polymers; antibacterial; self-assembly; Kemi; Chemistry;

    Abstract : In the last decades there has been significant advances in polymer chemistry. New coupling chemistries, polymerization techniques and accelerated approaches enable researches to push the limits of structural control. READ MORE

  5. 23. Tailored cellulosic materials by physical adsorption of polyelectrolytes

    Author : Andrew Marais; Lars Wågberg; Andreas Fery; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : The growing interest in using bio-based resources has made forest-based cellulose (used as fibre and nanofibril building elements) a good candidate for the development of new materials. In order to be used in commercial applications, cellulose must however be processed and/or functionalized to provide the final material with specific properties. READ MORE

  6. 24. Cellulose in Quaternary Ammonium-based Solvents: Dissolution, Modification and Coagulation

    Author : Shirin Naserifar; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; gelation; etherification; quaternary ammonium hydroxides; cellulose; dissolution;

    Abstract : Processing cellulose through dissolution and regeneration is essential for many applications, yet challenges are posed because it does not readily melt or dissolve in commonly used aqueous and organic solvents. Consequently, extensive efforts have been devoted to developing novel and efficient solvents for cellulose, as well as exploring new functionalization routes. READ MORE

  7. 25. Catanionic Aggregates in Gels : Prolonged Drug Release and Potential Implications for Topical Use

    Author : Noel Dew; Erik Björk; Stefan Ulvenlund; Uppsala universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Pharmaceutics; Galenisk farmaci; Galenisk farmaci; Pharmaceutics;

    Abstract : Gels are popular dosage forms.  This topical dosage form may be advantageous compared to oral or parenteral dosage forms. Favorable rheological or bioadhesive properties of gels might provide extended contact times at the site of administration compared to aqueous solutions. READ MORE