Sökning: "anionic surfactant"

Visar resultat 1 - 5 av 6 uppsatser innehållade orden anionic surfactant.

  1. 1. Effects of mixed surfactant system on chemical and physical stability of human growth hormone

    Master-uppsats, Lunds universitet/Livsmedelsteknik och nutrition (master)

    Författare :Karnsinee Viriyayudhakorn; [2023]
    Nyckelord :human growth hormone; surfactant; refolding; protein stability; physical degradation; chemical degradation; pharmaceutical technology; Technology and Engineering;

    Sammanfattning : In protein formulation, addition of surfactants is commonly executed to enhance product stability and shelf-life. The reason is that surfactants can protect proteins against surface-induced aggregation. However, the interaction between surfactant and protein depends on the type of surfactant used. LÄS MER

  3. 2. The influence of molecular structure of phospholipids on the transition from micelles to bilayers in bile salt surfactant/phospholipid mixtures

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Institutionen för läkemedelskemi

    Författare :Zeyneb Alkademi; [2020]
    Nyckelord :phospholipids; micelles; bilayers; bile salt; surfactant;

    Sammanfattning : Phospholipid molecules self-assemble to form bilayers that are poorly soluble in an aqueous solvent. Phospholipids may, however, be readily dissolved by mixing with a bile salt or amphiphilic drug surfactant that forms mixed surfactant/phospholipid micelles. LÄS MER

  4. 3. The influence of salt in the formation of carboxylic functionalized mesoporous silica

    Master-uppsats, Lunds universitet/Kemiska institutionen

    Författare :Ruiyu Lin; [2012]
    Nyckelord :Nanokemi; Chemistry;

    Sammanfattning : Popular summary This master thesis was focused on the influence of salt, such as NaCl and CaCl2, in the formation of carboxylic functionalized mesoporous silica materials. Mesoporous silica materials are one type of porous materials with a pore size between 2 and 5 nm (1݊݉ = 0.000000001 ݉ ). LÄS MER

  5. 4. Investigation of the micelle-to-vesicle transition in mixtures of an anionic and a cationic surfactant: the effect of adding salt

    Master-uppsats, KTH/Skolan för kemivetenskap (CHE)

    Författare :Josefine Leifsdotter; [2012]
    Nyckelord :SDS; DDAB; NaBr; Static light scattering; cryo-TEM; drug delivery; perforated vesicles; Krafft point;

    Sammanfattning : Catanoinic systems spontaneously form micelles and vesicles, which are self-assembled spherical structures made up by surfactants. In the core of the micelle a drug, or other organic substance, can be kept to stabilize it when placed in an aqueous environment. LÄS MER

  7. 5. Self-assembly in mixtures of an anionic and a cationic surfactant: A comparison between static light scattering and cryotransmission electron microscopy

    Master-uppsats, KTH/Skolan för kemivetenskap (CHE)

    Författare :Sara Skoglund; [2011]
    Nyckelord :surfactants; mixed micelles; vesicles; static light scattering; cryo-transmission electron microscopy;

    Sammanfattning : Surfactants self-assemble into aggregates above a certain concentration. In this work mixtures of the cationic surfactant cetyltrimetylammonium bromide (CTAB) and the anionic surfactant sodium octyl sulfate (SOS) were investigated systematically. LÄS MER