Search for dissertations about: "natural polymers"

Showing result 1 - 5 of 627 swedish dissertations containing the words natural polymers.

2. 1. Conjugated polymers for optoelectronics

   Author : Lars Johan Lindgren; Chalmers tekniska högskola; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Polymer Light-Emitting Diodes; Conjugated polymers; Polyfluorenes; Polymer Solar Cells;

   Abstract : The work presented in thesis is divided into two parts; conjugated polymers for light-emitting diodes and conjugated polymers for solar cells. The main focus was on the synthesis and characterisation of the conjugated polymers, together with device preparation and characterisation. READ MORE

4. 2. Dendrimers and dendronized polymers : synthesis and characterization

   Author : Andreas Nyström; Anders Hult; A. Dieter Schlüter; KTH; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Dendrimers; dendronized polymers; atom transfer radical polymerisation; ring-opening metathesis polymerization; reversible addition-fragmentation chain transfer polymerization; 2; 2-bis methylol propionic acid; tri-block copolymers; rheology; differential scanning calorimerty; 1H-NMR self-diffusion; Polymer chemistry; Polymerkemi;

   Abstract : The goal of this work was to synthesize complex macromolecular architectures such as dendrimers and dendronized polymers, and evaluate the effect from the dendrons on the optical and material properties. The work presented in this doctoral thesis, Dendrimers and Dendronized Polymers - Synthesis and Characterization, is divided into one minor and one major part. READ MORE

5. 3. Macroscopic Volume and Free Volume of Polymer Blends and Pressure-densified Polymers

   Author : Marcus Schmidt; Chalmers tekniska högskola; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; free-volume theories; refractive index; Lorentz-Lorenz equation; loss tangent; Avrami equation; freezing fractions; copolymers; polymer blends; pressure dilatometry; Tait equation of state; free-volume distributions; pressure-densified polymers; entropy of melting; dynamic-mechanical analysis; positronium; positron annihilation; free volume; cavity size; polymers; bulk modulus; PVT; phase separation; compressibility; thermal expansivity;

   Abstract : The macroscopic volume V as a function of pressure P and temperature T is obtained from PVT measurements. PVT data is sensitive to the state of polymers and changes therein. Moreover, PVT data gives access to the free-volume fraction. READ MORE

6. 4. Functional Degradable Polymers : from the monomeric point of view

   Author : Peter Olsén; Ann-Christine Albertsson; Karin Docent; Andrew Dove; KTH; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES;

   Abstract : Degradable polymers is key, within the future vison, of creating a sustainable society were all aspects, cradle to grave, can be realized in a sustainable way. It is imperative to consider, how the monomer is formed, its polymerization, the material properties created and the final degradation behavior. READ MORE

7. 5. Polymers at interfaces : or statistical thermodynamics for chain molecules subjected to constraints

   Author : Mikael Björling; Lund Lunds universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES;

   Abstract : .... READ MORE