Search for dissertations about: "powder polymers"

Showing result 1 - 5 of 17 swedish dissertations containing the words powder polymers.

  1. 1. Improved high velocity cold copaction processing polymer powder to high performance parts

    University dissertation from Stockholm : KTH

    Author : Bruska Azhdar; Sture Persson; Cornell Nicolescu; [2005]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; high-velocity compaction; powder polymers; polyamide-11; relaxation assist; compactibility; relative green density; morphology; pull-out; springback; NATURAL SCIENCES Chemistry Organic chemistry Polymer chemistry; NATURVETENSKAP Kemi Organisk kemi Polymerkemi;

    Abstract : A uniaxial High-Velocity Compaction (HVC) process for polymer powder using a cylindrical, hardened steel die and a new technique with relaxation assist was tested with a focus on the compactibility characteristics and surface morphology of the compacted materials using various heights of relaxation assist device with different compacting profiles.Relaxation assist device was presented as a new technique to reduce springback, pull-out phenomenon and to improve the compaction process. READ MORE

  2. 2. Thermoset polymers and coatings subjected to high compressive loads

    University dissertation from Stockholm : KTH

    Author : Daniel Ståhlberg; Mats Johansson; Gijsbertus de With; [2006]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; polymers; organic coating; thermoset; mechanical properties; compression; TECHNOLOGY Materials science Surface engineering; TEKNIKVETENSKAP Teknisk materialvetenskap Ytbehandlingsteknik;

    Abstract : This study describes the mechanical response of thermoset polymers under high compressive loads. The study is divided into two parts. The first part focuses on the behaviour of a powder coating when used in a clamping force joint and how the properties vary when the chemical and physical structure of the coating is changed. READ MORE

  3. 3. Mesostructured particulate silica materials with tunable pore size Synthesis, characterization and applications

    University dissertation from Stockholm : KTH

    Author : Malin Helena Sörensen; Per Claesson; Viveka Alfredsson; [2009]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Mesoporous materials; aersol-based process; emulsion-based process; biocatalysis; sustained release; 3D hexagonal; 2D hexagonal; powder; spherical particles; liquid crystalline phases; AFM-porosimetry; Pluronic; MEDICINE Chemistry; MEDICIN Kemi;

    Abstract : Colloidal assemblies of surfactants and polymers in aqueous solutions have been used by human mankind for hundreds of years and they are of great importance in many of our technological processes, such as fabrication of soap and papermaking. Less than two decades ago the idea of using colloidal assemblies as templates of inorganic materials was borne. READ MORE

  4. 4. Drugs and polymers in dissolving solid dispersions NMR imaging and spectroscopy

    University dissertation from Stockholm : KTH

    Author : Carina Dahlberg; István Furó; Anna Millqvist-Fureby; Michael Schuleit; Jadwiga Tritt-Goc; [2010]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; NATURAL SCIENCES Chemistry Physical chemistry; NATURVETENSKAP Kemi Fysikalisk kemi; NATURAL SCIENCES Chemistry Physical chemistry Surface and colloid chemistry; NATURVETENSKAP Kemi Fysikalisk kemi Yt- och kolloidkemi; PHARMACY; FARMACI;

    Abstract : The number of poorly water-soluble drug substances in the pharmaceutical pipeline is increasing, and thereby also the need to design effective drug delivery systems providing high bioavailability. One favourable formulation approach is preparation of solid dispersions, where dispersing a poorly water-soluble drug in a water-soluble polymer matrix improves the dissolution behaviour and the bioavailability of the drug. READ MORE

  5. 5. Thermoset polymers and coatings subjected to high compressive loads

    University dissertation from Stockholm : Fiber- och polymerteknologi

    Author : Daniel Ståhlberg; [2004]
    Keywords : ;

    Abstract : This study describes the mechanical response of thermosetpolymers under high compressive loads. The study is dividedinto two parts. One part is focusing on the behaviour of apowder coating when used in a clamping force joint and how theproperties varies when varying the physical structure of thecoating. READ MORE