Sökning: "Cellulosic"
Visar resultat 21 - 25 av 109 avhandlingar innehållade ordet Cellulosic.
21. Appropriate conditions for polyelectrolyte titration to determine the charge of cellulosic fibers
Sammanfattning : The polyelectrolyte titration method has been developed overthe years in order to determine the surface charge ofcellulosic fibers. The conditions have been varied depending onthe author. LÄS MER
22. Self Assembly of Hardwood Xylan -In Aqueous Solution and at Cellulosic Surfaces
Sammanfattning : The climate change on our planet is an issue of great concern. The dignity of this issue was confirmed by the award of the international panel of climate change (IPCC) the Nobel peace prize. This problem arises from the way that we live our lives, how we produce energy, materials and chemicals from a fossil source. LÄS MER
23. Betulin-modified cellulosic textile fibers with improved water repellency, hydrophobicity and antibacterial properties
Sammanfattning : Textiles made from natural sources, such as cotton and flax, have advantages over those made of synthetic fibers in terms of sustainability. Unlike major synthetic fibers that have a negative impact on the environment due to poor biodegradability, cotton cellulose is a renewable material. LÄS MER
24. Hierarchical cellulosic reinforcement for composites: enhanced resistance to moisture and compatibility with polymers
Sammanfattning : Cellulosic fibres (flax, hemp, regenerated cellulose) possess decent mechanical properties and they are gaining interest as an alternative to synthetic reinforcement (e.g. glass fibres) in polymers to reduce the petroleum consumption and pollution. LÄS MER
25. The effects of cellulosic fiber charges on polyelectrolyte adsorption and fiber-fiber interactions
Sammanfattning : The surface charges of cellulosic fibers contribute to several papermaking operations that influence the manufacture and final properties of paper. This thesis investigates the effect of the surface charges on wet-end chemistry, e.g. LÄS MER