Search for dissertations about: "oxygen barrier"

Showing result 1 - 5 of 112 swedish dissertations containing the words oxygen barrier.

  1. 1. Hemicellulose as barrier material

    University dissertation from Stockholm : KTH

    Author : Hartman Jonas; KTH.; [2006]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Hemicellulose; galactoglucomannan; plasma surface treatment; vaporphase grafting; benzylation; contact angle; oxygen permeability; solution casting; TECHNOLOGY Chemical engineering Chemical process and manufacturing engineering Cellulose and paper engineering; TEKNIKVETENSKAP Kemiteknik Kemisk process- och produktionsteknik Cellulosa- och pappersteknik;

    Abstract : Polysaccharides constitute an important source of raw materials for the packaging industry today. Polysaccharides have good natural barrier properties which are necessary for packaging films. Cellulose is the forerunner among renewable polymers for such applications. Hemicelluloses represent a new interesting breed of barrier materials. READ MORE

  2. 2. Barrier properties of greaseproof paper

    University dissertation from Institutionen för kemi

    Author : Henrik Kjellgren; Karlstads universitet.; [2005]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TECHNOLOGY Chemical engineering; TEKNIKVETENSKAP Kemiteknik; Chemical Engineering; Kemiteknik; Greaseproof papers; Air permeance; Coatings; Chitosan; Oxygen Barrier properties;

    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

  3. 3. Dispersion Coating for Active Food Packaging: : Aroma Interactions and Oxygen Scavenging

    University dissertation from Fakulteten för teknik- och naturvetenskap

    Author : Anna Nestorson; Karlstads universitet.; [2007]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TECHNOLOGY Chemical engineering; TEKNIKVETENSKAP Kemiteknik; Chemical Engineering; Kemiteknik; Active food packaging; Dispersion coating; Latex; Aroma compounds; Oxygen scavenging;

    Abstract : ABSTRACTActive packaging materials prolong the shelf life or preserve the quality of packed food by absorbing oxygen, ethylene, moisture or odours, or by releasing antimicrobial agents, antioxidants or flavours. In dispersion coating, a latex is applied onto paper or paperboard to form a barrier film against water, water vapour, oil or gases. READ MORE

  4. 4. Xyloglucan-based polymers and nanocomposites – modification, properties and barrier film applications

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Joby Kochumalayil Jose; KTH.; KTH.; [2012]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; xyloglucan; packaging; oxygen barrier; nanocomposites;

    Abstract : Biopolymers from renewable resources are of interest for packaging applications as an alternative to conventional petroleum-based polymers. One of the major application areas for biopolymers is food packaging, where a candidate polymer should meet critical requirements such as mechanical and oxygen barrier performance, also in humid conditions. READ MORE

  5. 5. Influence of paper properties and polymer coatings on barrier properties of greaseproof paper

    University dissertation from Karlstad : Karlstads universitet

    Author : Henrik Kjellgren; Karlstads universitet.; [2007]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TECHNOLOGY Chemical engineering; TEKNIKVETENSKAP Kemiteknik; Chemical Engineering; Kemiteknik; Greaseproof paper; Barrier properties; Gas barrier; Paper properties; Coatings;

    Abstract : Greaseproof paper has a dense structure and therefore provides a natural barrier against materials like fat and oils. The barrier is obtained by extensive refining of the pulp. READ MORE