Search for dissertations about: "Polymerteknik"

Showing result 1 - 5 of 39 swedish dissertations containing the word Polymerteknik.

  1. 1. Free Volume Depth Profiling at Polymer Surfaces and Interfaces

    University dissertation from Birgitta Ryd, Polymer Science & Engineering, Center for Chemistry and Chemical Engineering, Lund

    Author : John Algers; Lunds universitet.; Lund University.; [2004]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; biopolymers; Polymerteknik; Polymer technology; polymer interfaces; polymer surfaces; positron lifetime; free volume;

    Abstract : Pulsed low energy positron beams provide a unique and non-destructive tool to depth probe the free volume of polymers at surfaces and interfaces. Since the employment of low energy positron beams in polymer research is an emerging technique, some focus in this thesis has been on extracting methods and equations needed to interpret the experimental data. READ MORE

  2. 2. Asymmetrical Flow Field-Flow Fractionation and Multiangle Light Scattering for Molar Mass Analysis of Polysaccharide Derivatives

    University dissertation from Mats Andersson, Technical Analytical Chemistry, Center for Chemistry and Chemical Engineering, Lund University, Lund, Sweden

    Author : Mats Andersson; Lunds universitet.; Lund University.; [2003]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; polysaccharide derivatives ethylhydroxyethyl cellulose; molar mass analysis; asymmetrical flow field-flow fractionation; multiangle light scattering; polymer size distribution; Polymer technology; biopolymers; Polymerteknik;

    Abstract : Popular Abstract in Swedish Polymerer är en grupp av kemiska ämnen som vi idag har stor användning av för, bland annat, tillverkning av olika plaster. Det finns polymerer av en mängd olika typer varav de baserade på stärkelse och cellulosa, såkallade cellulosa- och stärkelsederivat, är av särskilt industriellt och vetenskapligt intresse då de är både biokompatibla och finns i mycket stora mängder i naturen. READ MORE

  3. 3. Oxidative Degradation of Polyethylene - A Cause of Off-flavour

    University dissertation from Thorbjörn Andersson, Tetra Pak R&D AB, SE- 22186 Lund, Sweden

    Author : Thorbjörn Andersson; Lunds universitet.; Lund University.; [2004]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; biopolymers; Polymerteknik; Polymer technology; off-flavour; degradation; polyethylene;

    Abstract : Polyethylene is the most frequently used polymer material in food packaging today. The polymer is often processed by film extrusion and extrusion coating between 250°C and 325°C. READ MORE

  4. 4. Polymer Displacement and Supermacroporous Cryogels - Two New Tools in Chromatographic Separation of Biomolecules and Bioparticles

    University dissertation from Department of Biotechnology, Lund University

    Author : Pär Arvidsson; Lunds universitet.; Lund University.; [2003]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; biopolymers; Polymerteknik; Biochemical technology; Polymer technology; IMAC; dye-affinity; affinity chromatography; viable cells; cell chromatography; non-clarified cell homogenate; cryogel; Polymer displacement; supermacroporous; Biokemisk teknik;

    Abstract : Production of protein is often accompanied with difficulties due to the large amounts of different biological material resulting from fermentation. This makes purification necessary and affinity chromatography is usually involved as being biospecific, although suffering from limitations as low recovery due to ineffective elution and inability to handle particulate materials. READ MORE

  5. 5. Molecularly Imprinted Polymers at the Nanometric Scale: Synthetic Receptors for Chemical Sensors

    University dissertation from Lund University

    Author : Anne-Sophie Belmont; Lunds universitet.; Lund University.; [2006]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; biopolymers; Polymer technology; Biokemisk teknik; Biochemical technology; Nanostructures; Synthetic Receptors; Optical Sensors; Molecular Imprinting; Polymer; Polymerteknik;

    Abstract : In this thesis, polymerisation techniques or deposition methods have been developed permitting the creation of thin molecularly imprinted polymer (MIP) films or patterns and their interfacing with transducer surfaces for biosensor applications. The creation of ultra thin films has been achieved using two different techniques, spin-coating and in-situ polymerization of thin films of monomers containing a sacrificial polymeric porogen, and autoassembly of MIP nanoparticles with the aid of an associative linear polymer. READ MORE