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Visar resultat 1 - 5 av 24 avhandlingar som matchar ovanstående sökkriterier.

  1. 1. Functional hybrid and composite porous membranes derived from imidazolium-type poly(ionic liquid)

    Författare :Atefeh Khorsand Kheirabad; Jiayin Yuan; Naser Tavajohi Hassan Kiadeh; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; poly ionic liquid ; porous polyelectrolyte membranes; composite materials; functional membranes; materialkemi; Materials Chemistry;

    Sammanfattning : Poly(ionic liquid)s (PIL)s, as a subclass of polyelectrolytes, are composed of polymeric backbones with ionic liquid (IL)-based species in each repeating unit. Recent studies have deepened the understanding of the PIL concept in terms of characteristics, functions and applications in comparison to classical ILs and traditional polyelectrolytes. LÄS MER

  3. 2. Gas Adsorption and Permeation in MFI Zeolites and Membranes

    Författare :Sang Wirawan; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; composite membranes; TPD; MFI zeolites; WGS membrane reactor; adsorption; FTIR spectra;

    Sammanfattning : The single and multi component gas adsorption behavior on silicalite-1 and cation exchanged MZSM-5 zeolites (M = H, Na, and Ba) were investigated by a step change response method. Temperature programmed desorption (TPD) and in-situ fourier transform infrared (FTIR) spectroscopy were also performed to study the type of adsorbed species and their thermal stabilities. LÄS MER

  4. 3. A vibrational spectroscopic study of functional colloidal silica and proton conducting membranes

    Författare :Anna Martinelli; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; colloidal; composite; gel; fuel cell; vibrational spectroscopy; filler;

    Sammanfattning : .... LÄS MER

  5. 4. Composite Materials in Molecular Imprinting Technology

    Författare :Ecevit Yilmaz; Tillämpad biokemi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; immobilized template; molecularly imprinted polymer; composite material; polymerization method; heterogeneous imprinting; surface; morphology; Polymer technology; Polymerteknik; biopolymers;

    Sammanfattning : Molecularly imprinted polymers (MIPs) are artificial plastic materials that mimic antibodies or enzymes. Like natural antibodies or enzymes, molecularly imprinted polymers can selectively bind target molecules or can promote catalytic reactions. LÄS MER

  7. 5. Modified and hybrid cellulose-based materials for water purification

    Författare :Dimitrios Georgouvelas; Aji Mathew; Henrikki Liimatainen; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Cellulose; lignocellulose; membranes; water treatment; heavy metal adsorption; dye adsorption; scalability; materialkemi; Materials Chemistry;

    Sammanfattning : The need for clean water has led to the development of several different water treatment methods as well as to a large number of organic, inorganic, hybrid and/or composite materials that are used in these methods. Cellulose, being a highly abundant biopolymer with meritorious properties, such as high mechanical strength, tunable surface chemistry, high aspect ratio and surface area, to mention a few, is exploited in the current thesis for water treatment applications. LÄS MER