Search for dissertations about: "dynamic mechanical analysis Macromolecular chemistry clay triacetin water PEO HPMC isotherm surface"

Found 1 swedish dissertation containing the words dynamic mechanical analysis Macromolecular chemistry clay triacetin water PEO HPMC isotherm surface.

2. 1. Water diffusion and free volume in hydrophilic polymers

   Author : Charlotte Trotzig; Centrum för analys och syntes; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Physical chemistry; free volume; self-diffusion; degree of crystallinity; glass transition temperature; tensile storage modulus; surface tension; isotherm; HPMC; PEO; water; triacetin; clay; Macromolecular chemistry; dynamic mechanical analysis; Fysikalisk kemi; differential scanning calorimetry; nuclear magnetic resonance; positron annihilation; Makromolekylär kemi;

   Abstract : During moisture uptake in polymers, the diffusion of the water molecules is believed to occur via unoccupied voids. These voids are called free volume cavities and their sizes are continuously altered when the moisture content in the polymer is enhanced. READ MORE