Sökning: "oxygen barrier"
Visar resultat 21 - 25 av 39 uppsatser innehållade orden oxygen barrier.
21. Production of Dialdehyde Cellulose and Periodate Regeneration: Towards feasible oxidation processes
Magister-uppsats, Karlstads universitet/Institutionen för ingenjörs- och kemivetenskaperSammanfattning : Cellulose is an attractive raw material that has lately become more interesting thanks to its degradability and renewability and the environmental awareness of our society. With the intention to find new material properties and applications, studies on cellulose derivatization have increased. LÄS MER
22. Starch and Hemicellulose as Barrier Materials in Food Packaging : - A study of the materials permeability and structure with polyvinyl alcohol as a reference
Master-uppsats, Karlstads universitet/Fakulteten för hälsa, natur- och teknikvetenskap (from 2013)Sammanfattning : To prevent permeation through food packages, the packaging are often combined with barrier coatings. Many of these coatings are petroleum based and wished to be replaced with renewable materials. LÄS MER
23. Graphene-based Coatings for Heat Exchangers
Master-uppsats, Lunds universitet/Centrum för analys och syntesSammanfattning : This master thesis is a part of a larger interwork between SP, KTH and Alfa Laval funded by the SIO graphene programme, which end goal is to formulate an anti-corrosion coating based on graphene or graphene related materials (GRMs). The investigation is partly based on an article “Novel anticorrosion coatings prepared from polyaniline/graphene composites” from 2012 by Chang et al in combination of knowledge acquired during a previous EU project, www. LÄS MER
24. Carboxylated Cellulose Nanocrystals Extraction from Kraft Pulp Using Ammonium Persulfate as Low Cost Source & Sustainable Method for High Quality Flexible Packaging Bio-coating
Master-uppsats, Lunds universitet/FörpackningslogistikSammanfattning : One of the leading challenges presented in 21st century for packaging industry is to address the growing environmental problems related to non-renewable flexible packaging. This leads to new growing interest in bio-based materials, among them cellulose nanocrystals (CNCs), which have already shown good performance in improving anti-fog and oxygen & water vapor barrier properties when applied to flexible film. LÄS MER
25. Avvattning av nanocellulosa i en DDA
Uppsats för yrkesexamina på grundnivå, KTH/Skolan för kemivetenskap (CHE)Sammanfattning : Genom laborativa försök skulle avvattning och retention av nanocellulosa i en DDA (Dynamic drainage analyzer) undersökas. Detta genom att tillsätta retentionskemikalier i varierande mängder för att se hur det påverkade avvattningen. LÄS MER