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Showing result 1 - 5 of 91 swedish dissertations matching the above criteria.

  2. 1. Heterogeneous Degradation and Recyclability of PP Studied by Imaging Chemiluminescence

    Author : Mikael Hamskog; Centrum för analys och syntes; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Teknik; Technological sciences; recyclability; mapping; surface; heterogeneity; heterogeneous; evaporation; ageing; hamamatsu; russel; ICL; CL; Irganox 1010; Irganox 1076; oxidation; hydroperoxide; radical; carbonyl; luminescence; chemiluminescence; imaging chemiluminescence; recycling; stabilization; polypropylene; degradation;

    Abstract : Oxidative degradation is a serious threat to long-term use and recyclability of polymers. Successful recycling of polymeric quality products requires characterization of the polymer material after reprocessing and use. READ MORE

  4. 2. Peroxyoxalate Chemiluminescence for Miniaturized Analytical Flow Systems

    Author : Tobias Jonsson; Umeå universitet; []
    Keywords : peroxyoxalate; chemiluminescence; nucleophilic catalysis; non-nucleophilic base; imidazole; triazole; aminopyridine; miniaturized; flow system; capillary electrophoresis; multivariate; analytisk kemi; Analytical Chemistry;

    Abstract : This thesis deals with the peroxyoxalate chemiluminescence (POCL) reaction and its application as a detection technique in flow systems for chemical analysis. Particularly, miniaturized flow systems aimed for separation of molecules. READ MORE

  5. 3. Oxidative spreading in polypropylene as studied by iImaging chemiluminescence

    Author : Petter Eriksson; KTH; []
    Keywords : Oxidation; Spreading; Chemiluminescence; Imaging; Polypropylene; PP; Polyamide; Gasphase;

    Abstract : .... READ MORE

  6. 4. Theoretical Studies of Ground and Excited State Reactivity

    Author : Pooria Farahani; Marcus Lundberg; Hans Karlsson; Isabelle Navizet; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Chemical Reactivity; Computational Chemistry; Dynamics; Ground and Excited States; Chemiluminescence; Atmospheric Chemistry;

    Abstract : To exemplify how theoretical chemistry can be applied to understand ground and excited state reactivity, four different chemical reactions have been modeled. The ground state chemical reactions are the simplest models in chemistry. To begin, a route to break down halomethanes through reactions with ground state cyano radical has been selected. READ MORE

  7. 5. Laser-Based Investigations of Combustion Phenomena in Gas Turbine Related Burners

    Author : Arman Subash; Förbränningsfysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Combustion; Gas turbine; Chemiluminescence; laser-based techniques; LIF; PIV; DLE; TARS; CH4; H2; OH; CH20; Equivalence ratio; flame stabilization; LBO; Flashback; RPL; Fysicumarkivet A:2018:Subash;

    Abstract : Experiments were performed on various combustion devices to investigate the flames employing different optical measurement techniques under atmospheric pressure conditions. Non-intrusive laser-based techniques provided in-situ information concerning different parameters of the combustion process, with a high degree of temporal and spatial resolution. READ MORE