Sökning: "plasticizer"

Visar resultat 21 - 25 av 59 avhandlingar innehållade ordet plasticizer.

1. 21. Processing and properties of nanocomposites based on polylactic acid, chitin and cellulose

   Författare :Natalia Herrera Vargas; Kristiina Oksman; Aji P. Mathew; Jyrki Vuorinen; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Nanocomposite; Cellulose; Chitin; Extrusion; Polylactic acid; Trä och bionanokompositer; Wood and Bionanocomposites;

   Sammanfattning : The production of bio-based and biodegradable nanocomposites has gained attention during recent years for environmental reasons; however, the large-scale production of these nanocomposites still poses challenges. The objective of this work has been to prepare bio-based and biodegradable nanocomposites via liquid-assisted extrusion and to gain a deeper understanding of the process and the relationship between the process, composition, structure and properties. LÄS MER

3. 22. Development of new blood banking strategies for processing and storage of red blood cell components

   Författare :Linda Larsson; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :;

   Sammanfattning : The field of red blood cell (RBC) components has been quite uneventful during the last few decades, save for the experimental exploration of alternative additive solution compositions. The reason is likely that the RBC quality has been good enough and the shelf-life of conventional RBC concentrates (RCC) has been long enough to not really motivate the workload that any dramatic changes would implicate. LÄS MER

4. 23. Bio-based materials from crambe and carinata industrial oilseed meals : compression moulded and extruded oilseed meal plastics

   Författare :William Newson; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
   Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

   Sammanfattning : Protein-based plastics are considered as a new route for valorisation of oilseed meal from the industrial oil crops Crambe abyssinia (crambe) and Brassica carinata (carinata) as they cannot be used for animal feed or human food. To convert oilseed meals into protein-based plastic films compression moulding was used with varying processing temperature, chemical additives and protein extraction conditions. LÄS MER

5. 24. Barrier and Mechanical Properties of Starch Films Based on Regular Potato Starches and High Amylose Potato Starches

   Författare :Agneta Jansson; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Chemical Engineering; Kemiteknik;

   Sammanfattning : The object of this work was to investigate the film properties of modified regular potato starch and modified high amylose potato starch with different small molecules tested as possible plasticizers. The studies focused on barrier properties such as water vapour permeability (WVP, WVPe), the glass transition temperature (Tg) and mechanical (tensile) properties. LÄS MER

7. 25. Edible and Biodegradable Whey Protein Films as Barriers in Foods and Food Packaging

   Författare :Martin Anker; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; water vapor permeability; critical gel concentration; BETA-lactoglobulin; whey protein; mechanical properties; moisture content; microstructure; glass transition temperature; oxygen permeability;

   Sammanfattning : This thesis focuses on the characterization of whey protein films. The films were cast from heated aqueous solutions and dried in a climate room at 23 °C and 50% relative humidity for 16 h. The microstructure of the films was found to be dependent on the protein concentration, the plasticizers, and the pH. LÄS MER