Sökning: "Styrene"
Visar resultat 21 - 25 av 86 avhandlingar innehållade ordet Styrene.
21. Hemicellulose as barrier material
Sammanfattning : 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. LÄS MER
22. Improved properties of thermoplastic wood flour composites
Sammanfattning : In this study the properties of composites made of wood flour and thermoplastics have been investigated. In order to improve the interfacial adhesion between hydrophobic and nonpolar thermoplastics and hydrophilic and polar wood flour different additives have been used as compatibilizers in composites systems. LÄS MER
23. In vitro models to study mechanisms of neural cell death induced by toxic agents
Sammanfattning : Neurotoxicity arises when exposure to toxic agents, either naturally occurring or manmade substances, alters the normal activity and/or structure of the nervous system. This can lead to disruption of vital metabolic processes and eventually to cell death. Certain unique features of the nervous system make it particularly vunerable to toxicants, e. LÄS MER
24. Free Volume Determination in Polymers and Polymer Blends
Sammanfattning : The free volume of a polymer, which corresponds to the unoccupied regions accessible to segmental motions, is an important parameter for understanding and predicting many of its characteristic properties. The concept of free volume is the basis for understanding the molecular mobility in polymers. LÄS MER
25. Bio-based Composites from Soybean Oil Thermosets and Natural Fibers
Sammanfattning : In order to reduce over-dependency on fossil fuels and to create an environment that is free of non-degradable plastics, and most importantly to reduce greenhouse gas emission, bio-based products are being developed from renewable resources through intense research to substitute conventional petrochemical-based plastics with renewable alternatives and to replace synthetic fibers with natural fibers. Many authors have done quite a lot of work on synthesizing polymers from renewable origin. LÄS MER