Search for dissertations about: "alkyl chain-length"

Showing result 1 - 5 of 29 swedish dissertations containing the words alkyl chain-length.

  2. 1. Adsorption of polyhydroxyl based surfactants

    Author : Maria Matsson; Per Claesson; Robert Meszaros; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Physical chemistry; surface chemistry; adsorption; surfactant; nonionic; alkyl glucoside APG ; ellipsometry; kinetics; alkyl amine oxide DDAO ; alkyl ammonium bromide DTAB ; solid liquid interface; synergism; coadsorption.;

    Abstract : Adsorption on solid surfaces from solution is a fundamental property of a surfactant. It might even be the most important aspect of surfactant behavior, since it influences many applications, such as cleaning, detergency, dispersion, separation, flotation, and lubrication. READ MORE

  4. 2. Enrichment of biogenic and anthropogenic organic substances on sea spray aerosols

    Author : Nikola Radoman; Ian Cousins; Matthew Salter; Jurgita Ovadnevaite; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Sea spray; Organic carbon; Dissolved organic matter; Phytoplankton bloom; Cationic surfactants; Perfluorinated alkyl acids; LC-MS; HRMS; Analytical Chemistry; analytisk kemi;

    Abstract : The world’s oceans are the source of one of the most abundant types of natural aerosols, namely sea spray aerosols (SSA). By scattering solar radiation, SSA play a significant role in controlling the Earth’s radiation budget, while they are also involved in the formation of clouds, acting as cloud condensation nuclei (CCN). READ MORE

  5. 3. Sources, transport and fate of perfluoroalkyl acids in the atmosphere

    Author : Jana Johansson; Ian Cousins; Tom Harner; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Perfluorinated alkyl acids; PFOS; PFOA; Isomers; Sources; Atmospheric transport; Sea spray; Gas-particle partitioning; Volatilisation; Applied Environmental Science; tillämpad miljövetenskap;

    Abstract : Perfluoroalkyl acids (PFAAs) are man-made chemicals which have been observed in the global environment, even in locations far away from where they are emitted. These persistent substances are taken up in humans and biota and may have toxic effects. READ MORE

  6. 4. Interactions between surfactants and starch : from starch granules to amylose solutions

    Author : Isabel Mira; Per Claesson; James N. Bemiller; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; food science and technology; polymer chemistry; Surface and colloid chemistry; Yt- och kolloidkemi;

    Abstract : Starch is a mixture of two polysaccharides, amylose (AM) and amylopectin, which occurs naturally in the form of microscopic granules that are abundantly found in tubers, roots, cereal grains and fruits. In order to bring out their functional properties as thickeners and texture enhancers, starch granules are often disrupted by heating in excess water. READ MORE

  7. 5. Formation mechanism of anionic-surfactant-templated mesoporous silica (AMS)

    Author : Chuanbo Gao; Osamu Terasaki; Anders Palmqvist; Stockholms universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; mesoporous silica; anionic surfactant; formation mechanism; structural control; Chemistry; Kemi; Structural Chemistry; strukturkemi;

    Abstract : This dissertation is focused on synthesis, characterization and formation mechanism of anionic-surfactant-templated mesoporous silica (AMS). Structural control mechanisms of AMS are investigated. READ MORE