Search for dissertations about: "crystallization"

Showing result 1 - 5 of 206 swedish dissertations containing the word crystallization.

  1. 1. Crystallization in Constrained Polymer Structures Approaching the Unsolved Problems in Polymer Crystallization

    University dissertation from Stockholm : KTH

    Author : Eugenia Núñez; Ulf W. Gedde; Bernard Lotz; [2006]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Crystallization; Constrained structures; poly ε–caprolactone ; poly ethylene oxybenzoate .; NATURAL SCIENCES Chemistry Organic chemistry Polymer chemistry; NATURVETENSKAP Kemi Organisk kemi Polymerkemi;

    Abstract : The knowledge regarding certain issues in polymer crystallization e.g. the possible existence of short–lived mesophases remains inconclusive due to experimental limitations. Polymers undergo chain folding upon crystallization, which introduces some complications that are not found in crystallization of low molar mass materials. READ MORE

  2. 2. Crystallization of Vanillin : Influence of Additives on Primary Nucleation

    University dissertation from Stockholm : Kemiteknik

    Author : Osvaldo Pino Garcia; [2001]
    Keywords : crystallization; nucleation; induction period; interfacial energy; molecular modelling; vanillin; additives;

    Abstract : .... READ MORE

  3. 3. Crystallization of Parabens Thermodynamics, Nucleation and Processing

    University dissertation from Stockholm : Kemiteknik

    Author : Yang Huaiyu; Åke Rasmuson; Joop ter Horst; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Nucleation; Induction time; Interfacial energy; Ethyl paraben; Propyl paraben; Butyl paraben; Methanol; Ethanol; Propanol; Acetone; Ethyl acetate; Solubility; Thermodynamics; Activity; Activity coefficient; Liquid-liquid phase separation; Ternary phase diagram; Melting point; Boiling point; Polarity; Cooling crystallization; Sandwich crystal; Porous; Particle Vision and Measurement; Focused Beam Reflectance Method; Infrared Spectroscopy; Confocal Raman Microscopy; X-Ray Diffraction; Differential Scanning Calorimetry; SRA - E-vetenskap SeRC ; SRA - E-Science SeRC ;

    Abstract : In this work, the solubility of butyl paraben in 7 pure solvents and in 5 different ethanol-water mixtures has been determined from 1 ˚C to 50 ˚C. The solubility of ethyl paraben and propyl paraben in various solvents has been determined at 10 ˚C. READ MORE

  4. 4. Cocrystals of theophylline : Thermodynamics and crystallization

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Shuo Zhang; Åke Rasmuson; Nicholas Blagden; [2013]

    Abstract : .... READ MORE

  5. 5. Physical properties and crystallization of theophylline co-crystals

    University dissertation from Stockholm : KTH

    Author : Shuo Zhang; Åke Rasmuson; Per Svensson; Mårten Behm; [2010]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Theophylline; oxalic acid; glutaric acid; maleic acid; co-crystal; decomposition temperature; melting temperature; solubility; crystallization; TECHNOLOGY Chemical engineering Chemical process and manufacturing engineering Molecular transport processes in chemical process engineering; TEKNIKVETENSKAP Kemiteknik Kemisk process- och produktionsteknik Molekylära transportprocesser i kemisk processteknik;

    Abstract : This work focuses on the physical properties and crystallization of theophyline co-crystals. Co-crystals of theophylline with oxalic acid, glutaric acid and maleic acid have been investigated.The DSC curves of these co-crystals show that their first endothermic peaks are all lower than the melting temperature of theophylline. READ MORE