Search for dissertations about: "oxygen transmission rate"

Showing result 1 - 5 of 17 swedish dissertations containing the words oxygen transmission rate.

  2. 1. Food and Packaging Interactions Affecting Food Quality

    Author : Fredrik Johansson; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; sorbed vegetable oil; oxygen transmission rate; food packaging; supercritical fluid extraction; inertness test; refillable PET bottles; permeability; aroma; interactions; sorption;

    Abstract : Food and packaging interactions that may impair the food quality have been studied and methods to determine these interactions have been developed. An off-line supercritical fluid extraction method using carbon dioxide was developed and used to extract sorbed low molecular weight compounds from polymer films. READ MORE

  4. 2. Taming of Oxygen in the Electron Microscope : Effects of High Energy Electron Irradiation on O2 and Oxides

    Author : David Wahlqvist; NanoLund: Centre for Nanoscience; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Transmission electron microscope; Environmental transmission electron mircoscopy; Electron Beam damage; Oxidation; carbon black;

    Abstract : Transmission electron microscopy (TEM) is an atomic resolution technique that allows for in depth analysis of the properties of different materials by passing high energy electrons through a thin sample and detecting how they are affected. However, due to the strong interaction between electrons and matter, the probability of the sample remaining unperturbed by the electron irradiation is small. READ MORE

  5. 3. Employing Metal Iodides and Oxygen in ALD and CVD of Functional Metal Oxides

    Author : Jonas Sundqvist; Anders Hårsta; Roy Gordon; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Inorganic chemistry; CVD; ALD; tantalum oxide; hafnium oxide; tin oxide; epitaxy; Ta2O5; HfO2; SnO2; XRD; Oorganisk kemi; Inorganic chemistry; Oorganisk kemi; Inorganic Chemistry; Oorganisk kemi;

    Abstract : Many materials exhibit interesting and novel properties when prepared as thin films. Thin film metal oxides have had an impact on the technological progress of the microelectronics mainly due to their electrical and optical properties. READ MORE

  6. 4. Barrier Properties of greaseproof paper

    Author : Henrik Kjellgren; Gunnar Engström; Lennart Stolpe; Karlstads universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Greaseproof papers; Air permeance; Coatings; Chitosan; Oxygen Barrier properties; Chemical Engineering; Kemiteknik; Chemical engineering;

    Abstract : The barrier properties of greaseproof paper are achieved by extensive beating of the fibres. This treatment results in high costs for energy, both as beating energy and drying energy. A full-scale trial has been performed to investigate the role of the pulp with respect to energy demand and the barrier properties of the final papers. READ MORE

  7. 5. Effects of plasticizing and crosslinking on the mechanical and barrier properties of coatings based on blends of starch and poly(vinyl alcohol)

    Author : Asif Javed; Lars Järnström; Henrik Ullsten; Peter Rättö; Karlstads universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Citric acid; Glycerol; Polyethylene glycol; Barrier properties; Starch; Mechanical properties; Polyvinyl alcohol; Adhesion; Cross linking; Extrusion coating; Chemical Engineering; Kemiteknik;

    Abstract : In the last decades, intensive research has been carried out in order to replace oil-based polymers with bio-based polymers due to growing environmental concerns. So far, most of the barrier materials used in food packaging are petroleum-based materials. READ MORE