Sökning: "Polymer egenskaper"

Visar resultat 16 - 20 av 108 uppsatser innehållade orden Polymer egenskaper.

1. 16. Användning av den vattenbaserade emulsionspolymeren för utveckling avspecifika egenskaper hos tegel och betong: syntes och karakterisering

   Master-uppsats, Högskolan i Borås/Akademin för textil, teknik och ekonomi

   Författare :Shahab Nasr; [2022]
   Nyckelord :Water-based acrylic styrene emulsion polymerization; Coating; Nanocomposites; Concrete; Brick;

   Sammanfattning : Improvement properties of building materials are essential. In this dissertation thesis, the main concern had been on synthesizing a new resin to improve the properties of concrete and brick. Solvent-based polymers have been used for many years to improve the quality of building materials. LÄS MER

3. 17. Mapping of Material & Conversion Parameters of Packaging Production – Boardio®

   Master-uppsats, Lunds universitet/Kemiteknik (CI)

   Författare :Yusuf Qasem; Younes Chraibi Ottosson; [2022]
   Nyckelord :Chemical Engineering; Packaging; Packaging Production; Paperboard; Converting; Lamination; Extrusion; Die-cutting; X-ray tomography; GPI; Creasing; Perforation; Tensile Strength; Technology and Engineering;

   Sammanfattning : With an increased demand for sustainable packaging solutions for the ever-growing FMCG market, fiber-based systems rise as an answer to phasing out plastics in packages and reducing the humanity’s climate footprint. However, constructing a packaging solution largely consisting of paperboard comes with its challenges, such as integrating functionalities in the anisotropic paperboard that formerly were provided by a fundamentally different materials with divergent mechanical properties, being isotropic polymers. LÄS MER

4. 18. Characterization of PLA Nanoplastics, and Their Effects on Daphnia magna

   Master-uppsats, Lunds universitet/Centrum för analys och syntes

   Författare :Melinda Rydberg; [2022]
   Nyckelord :Polylactic acid; Polylactide; PLA; Nanoplastic; Daphnia magna; Toxicity; Polymer Technology; Chemistry; Earth and Environmental Sciences;

   Sammanfattning : As plastic pollution in aquatic environments keeps happening it has become more and more important to learn more about nanoparticles. Bio-based and biologically degradable plastics, such as polylactic acid (PLA), are gaining popularity and it is therefore important to determine whether they break down into nanoplastics or not. LÄS MER

5. 19. Polymer gel dosimetry - Using MRI-readout, simplified relatively non-toxic mixing procedure tested on FLASH

   Master-uppsats, Lunds universitet/Sjukhusfysikerutbildningen

   Författare :Maria Blomstedt; [2022]
   Nyckelord :Medicine and Health Sciences;

   Sammanfattning : Background: One of the polymer gel dosimeters available today is the N-isopropylamide (NIPAM) polymer gel dosimeter which has a less toxic monomer compared to other polymer gels and the advantage of being able to be manufactured under normal oxygen levels. Polymer gel dosimeters in general are advantageous independent dosimeters to use for verification of new radiation treatment techniques due to its favorable qualities such as very high resolution, 3D coverage, tissue equivalence and independence of energy and incident direction of the radiation beam. LÄS MER

7. 20. Characterization methodology to assess the mechanical properties of delignified birch/PMMA transparent wood biocomposites

   Master-uppsats, KTH/Fiber- och polymerteknologi

   Författare :Nicolò Arcieri; [2022]
   Nyckelord :Transparent wood; mechanical properties; fracture toughness; in situ experiments; cohesive zone model; Transparent trä; mekaniska egenskaper; brottsstyrka; in situ-experiment; modell för kohesionszonen;

   Sammanfattning : Transparent trä biokompositer (TW) är en ny attraktiv klass av biokomposit. De är uppbyggda av delignifierat trä som impregnerats med en polymer med matchande brytningsindexet.  TW kan skräddarsys för inom ett brett spektrum av funktionella, optiska och mekaniska egenskaper. LÄS MER