Sökning: "Solvent Retention Capacity"

Visar resultat 1 - 5 av 7 uppsatser innehållade orden Solvent Retention Capacity.

1. 1. BORTTAGNING AV TRYCKKÄNSLIG TEJP PÅ PAPPER En studie över användningen av hydrogeler

   Kandidat-uppsats, Göteborgs universitet/Institutionen för kulturvård

   Författare :Amanda Nyagake Mwita; [2023-11-07]
   Nyckelord :Pressure-sensitive tape; agar-gel; hydrogel; nanogel; paper conservation;

   Sammanfattning : The purpose of this thesis is to examine hydrogels practical efficiency in the removal of pressure-sensitive tapes on paper. The organic agar gel and synthetically produced Nanorestore Gel® PG5 Peggy Gel and Nanorestore Gel® High Water Retention are used in an experimental process upon removing three common pressure-sensitive tapes (PTSs) on paper. LÄS MER

3. 2. Investigating self-discharge in a graphite dual-ion cell using in-situ Raman spectroscopy.

   Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Strukturkemi

   Författare :Ismail Yussuf Hassan; [2023]
   Nyckelord :graphite; dual-ion battery; parasitic reaction; cathode-electrolyte interface; anion intercalation; concentrated electrolyte; self-discharge; Raman spectroscopy;

   Sammanfattning : Anion intercalation in the graphite positive electrode of a dual-ion battery requires high potential (> 4.3 V vs Li+/Li), which aggravates parasitic reactions involving electrolyte decomposition and Al corrosion, manifesting in poor coulombic efficiency, cycle life, and quick self-discharge. LÄS MER

4. 3. Modified cellulose synthesized by different deep eutectic solvents as an additive in paper making process

   Master-uppsats, Karlstads universitet

   Författare :Shiniar Said Saleh; [2023]
   Nyckelord :green chemistry; dry strength additives; deep eutectic solvents; sodium periodate oxidation; charge density; dewatering; mechanical strength.;

   Sammanfattning : The environmental concerns that come with the currently used traditional papermaking process where petroleum-based additives are used, has tempted researchers to study “green” additives by introducing environmentally friendly modifications of cellulose as an additive in the papermaking process. This thesis will spin further on that by producing additives with different charge densities and focus on to incorporate an etherification reaction into potentially greens systems based on non-toxic and readily biodegradable deep eutectic solvent (DES). LÄS MER

5. 4. Fluorine-free electrolytes for Li-ion batteries

   Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Strukturkemi

   Författare :Filippa Wahlfort; [2021]
   Nyckelord :Li-ion batteries; fluorine-free;

   Sammanfattning : Lithium-ion batteries are of great importance for today's society. The state-of-the-art batteries that are used today use a fluorinated electrolyte that contains the salt LiPF6 and acts as both a safety hazard and an environmental issue due to its ability to form the toxic gas hydrogen fluoride (HF). LÄS MER

7. 5. Baking volume of wheat flour : assessment of novel analyses and parameters in prediction

   Master-uppsats, SLU/Department of Molecular Sciences

   Författare :Assar Sundholm; [2021]
   Nyckelord :baking volume; wheat flour; Alveolab; SDmatic; SRC 2;

   Sammanfattning : In the milling industry baking volume is used as the gold standard for wheat flour quality. Determination of baking volume is a time-consuming and blunt method, demanding a quicker and more precise substitute. The aim of this thesis was to assess how different rheological and chemical parameters affect baking volume. LÄS MER