Search for dissertations about: "glass-transition"

Showing result 1 - 5 of 111 swedish dissertations containing the word glass-transition.

2. 1. Effect of water on the glass transition and properties of solid-state pharmaceutical formulations

   Author : Ekaterina Bogdanova; Vitaly Kocherbitov; Thomas Rades; Malmö universitet; []
   Keywords : glass transition; glass transition temperature; relaxation; sucrose; trehalose; maltodextrin; lysozyme; unfolding; hydration; solid-stae; sorption calorimetry; Health and society; Hälsa och samhälle;

   Abstract : The aim of this thesis was to increase our knowledge of the glassy state and the glass transition phenomenon and to evaluate the effect of water on the glassy state. To accomplish this, investigations were focused on the amorphous sucrose-water (paper I, II, III), trehalose-water (paper I), maltodextrin-water (paper I), and lysozyme-sucrose-water (paper IV) systems. READ MORE

4. 2. Glass Transition Dynamics in Soft Condensed Matter

   Author : Johan Mattsson; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; polymer films; beta relaxation; hydrogen bond; glass transition; polymer dynamics; cooperativity; confinement; IXS; Brillouin light scattering; excess wing;

   Abstract : Materials of very different character, ranging from polymers to metals can be made into glasses. The structural and dynamical properties of glass-forming materials are fundamentally different from those found in crystals. Hence, glassy materials exhibit unique characteristics, which make them suitable for a wide range of applications. READ MORE

5. 3. The glass transition and dynamics of thin polymer films

   Author : Johan Mattsson; Chalmers tekniska högskola; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Brillouin light scattering; polymer dynamics; QCM; thin films; glass transition; confinement; cooperativity; polystyrene;

   Abstract : .... READ MORE

6. 4. Effect of hydration on thermodynamic, rheological and structural properties of mucin

   Author : Yana Znamenskaya; Malmö högskola; []
   Keywords : mucous gel; mucus; mucin; PGM; BSM; BSM chitosan multilayers; hydration; water sorption isotherm; relative humidity; water activity; bound water; enthalpy of hydration of biopolymer; glass transition; rheology; phase diagram; fiber-like structure; dumbbell-like structure; sorption calorimetry; DSC; QCM-D; SAXS; AFM;

   Abstract : Mucus, an adherent hydrated layer covering the epithelium, is found in all internal tracts of the body and plays an important role in animal and human life. One of the essential functions of mucus is protection of tissues against dehydration. READ MORE

7. 5. Sweet stability

   Author : Kajsa Ahlgren; Chalmers tekniska högskola; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; myoglobin; lysozyme; amyloid fibrils; DSC; trehalose; protein denaturation; neutron scattering; glass transition; sucrose;

   Abstract : The disaccharide trehalose is known for its ability to stabilise proteins by preventing aggregation and elevating their denaturation temperature, consequently avoiding unfolding. The folding and function of proteins are vital for many biological processes. READ MORE