Essays about: "Oxidative degradation"

Showing result 1 - 5 of 21 essays containing the words Oxidative degradation.

  1. 1. Service life study of environmentally friendly lubricants.

    University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Author : Marybeth Chetachukwu Ugoh; [2023]
    Keywords : Base oil; Ageing; Glycerol; PPG; PEG; Squalene; Rapeseed oil; Ester; Paraffin; Oxidation; FTIR;

    Abstract : Environmentally friendly lubricants are in demand in response to the rising concerns and restrictive legislation that surround the use of mineral oil lubricants. One area of importance is understanding the service life of the environmentally friendly base oils of these non-toxic, biodegradable and renewable alternatives. READ MORE

  3. 2. Influence of Nrf2 Activators and Keap1 Inhibitors on Antioxidative Phenotypes of THP-1-Derived M1 and M2 macrophages: Therapeutic Potential for Systemic Lupus Erythematosus

    University essay from Uppsala universitet/Institutionen för immunologi, genetik och patologi

    Author : Leo Svahn; [2023]
    Keywords : NRF2; KEAP1; THP-1; M1; M2; SLE;

    Abstract : POPULAR SCIENTIFIC SUMMARY Systemic lupus erythematosus (SLE) is not your average disorder. It behaves like a mischievous troublemaker, wreaking havoc throughout the body, causing inflammation that affects multiple organs. READ MORE

  4. 3. Reduction of Acrylamide in Reject Water from Sludge Dewatering

    University essay from KTH/Hållbar utveckling, miljövetenskap och teknik

    Author : Martina Aspegren; [2023]
    Keywords : Water treatment techniques; Ozonation; Moving bed biofilm reactor; Trickling filter; Biological degradation; Lake Mälaren; attenreningstekniker; Ozonering; Biofilmreaktor med rörlig bädd; Biobädd; Biologisk nedbrytning; Mälaren;

    Abstract : Norrvatten produces and delivers drinking water to approximately 700 000 people in the northern part of the Stockholm region in Sweden. In their water treatment plant Görvälnverket, water from Lake Mälaren is purified. During the purification, sludge is produced. To be able to use the sludge as landfilling material, it must be dewatered. READ MORE

  5. 4. Reinforced Biodegradable Polymer Composite Material based on Japanese Washi Paper

    University essay from Uppsala universitet/Institutionen för kemi - Ångström

    Author : Lovisa Rova; [2022]
    Keywords : biodegradable; polymer; composite; paper-based; washi; poly butylene succinate ; biodegradation;

    Abstract : In this study, traditional Japanese washi paper was sandwiched with poly(butylene succinate)(PBS) in order to produce a paper-based composite material that can be biologically degraded. Specimens were prepared using a hot press, and the mechanical properties of the washi paperand the new composite material were investigated by tensile tests. READ MORE

  6. 5. Lifetime prediction of a polymeric propellant binder using the Arrhenius approach

    University essay from Uppsala universitet/Tillämpad materialvetenskap

    Author : Johannes Bohlin; [2021]
    Keywords : Polymer; Thermal-oxidative degradation; Lifetime prediction; Propellant; Arrhenius; Aging experiments; Diffusion-limited oxidation;

    Abstract : The thermal-oxidative degradation of a crosslinked hydroxy-terminated polybutadiene (HTPB)/cycloaliphatic diisocyanate (H12MDI) based polymer, which is commonly used as a polymeric binder in propellants, is investigated at temperatures from 95°C to 125°C with the aim of estimating the lifetime of the material in storage conditions (20°C) using the Arrhenius approach. Furthermore, the effect of antioxidants and to a lesser extent plasticizer on the degradation process was also studied. READ MORE