Sökning: "pmma"

Visar resultat 1 - 5 av 49 uppsatser innehållade ordet pmma.

  1. 1. Morphological study of PS/PMMA-matrix on glass, related to vapour pressure, mass-fraction, and size

    Kandidat-uppsats, Karlstads universitet/Institutionen för ingenjörs- och kemivetenskaper (from 2013)

    Författare :Gustav Larsson; [2023]
    Nyckelord :organic solar cells; polymer; morphology; film; AFM;

    Sammanfattning : The objective of this study is to observe how changing amount or ratio between dried mixes of poly-methyl-methacrylate and poly-styrene change the surface appearance, and how the results might inform future design of Organic photovoltaic cells, whom are based on polymer mixtures and heavenly dependent on the arrangement of polymers. An atomic force microscope was used on glass surfaces coated in a poly-methyl-methacrylate/poly-styrene matrix and dried from either dichloromethane or ethyl-acetate to determine surface appearance. LÄS MER

  3. 2. Qualitative Analysis of Chlorinated Paraffins in Recycled Plastics

    Kandidat-uppsats, Örebro universitet/Institutionen för naturvetenskap och teknik

    Författare :Solal GAUDIN; [2023]
    Nyckelord :Short chain Chlorinated Paraffins SCCP Medium chain Chlorinated Paraffins MCCP Long chain Chlorinated Paraffins LCCP Recycled plastics Qualitative analysis Bioaccumulation Long range transport Gas Chromatography – Mass spectrometry;

    Sammanfattning : Described in many studies as dangerous for the environment and potentially carcinogenic for humans, Chlorinated Paraffins (CPs) are easily widespread due to their substantial production and use in different products. Previous studies reported the presence of CPs in different plastic polymers. LÄS MER

  4. 3. Analys av transparent trä tillverkat genom delignifiering och PMMA-infiltration

    Kandidat-uppsats, KTH/Kemiteknik

    Författare :Hannah Rosell; Tove Tisell Mikkelsen; Nadiya Wattar; Selma Kadric; [2023]
    Nyckelord :Transparent wood; fiber technology; polymer infiltration; delignification; wood chemistry;

    Sammanfattning : Rapporten presenterar en studie där tre trätyper, balsa, ask och björk, fabriceras genom en förutbestämd metod till transparent trä. Detta material har många möjliga applikationer, inklusive energieffektiva byggnader, förpackningar, solceller och elektroniska apparater. LÄS MER

  5. 4. Böjhållfasthet hos PMMA beroende på framställningsmetod, material och slitage efter termocykling. : -

    M1-uppsats, Malmö universitet/Odontologiska fakulteten (OD)

    Författare :Nemany Khadije; Abdallah Mohammed Awad; [2023]
    Nyckelord :Bettskenor; Böjhållfasthet; Fräsning; PMMA; TMD;

    Sammanfattning : Aim: The purpose of the study is to investigate the flexural strength of polymers (PMMA) intended for stabilization splints produced by heat-activated polymerization or milling, as well as how the flexural strength is affected wear.   Material and Methods: Twelve rectangular specimens in the dimensions 64 x 10 x 3 mm were produced by milling and divided into two groups: F (milled) and FS (milled subjected to wear testing). LÄS MER

  7. 5. 3D printing of ceramic composites with improved mechanical strength

    Master-uppsats, Uppsala universitet/Tillämpad materialvetenskap

    Författare :Liu Yuchen; [2023]
    Nyckelord :;

    Sammanfattning : AbstractCeramic materials have a wide range of applications in many fields, but their fragility limits theiruse in high strength and high stress environments. Therefore, by combining ceramic materialswith reinforcing agents, their mechanical properties can be improved. LÄS MER