Search for dissertations about: "gel swelling"

Showing result 1 - 5 of 22 swedish dissertations containing the words gel swelling.

  1. 1. Polymer Gels: Modeling the Swelling Behavior

    University dissertation from Physical Chemistry 1, Lund University

    Author : Stefanie Schneider; Lunds universitet.; Lund University.; [2003]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Fysikalisk kemi; Physical chemistry; Polymerteknik; biopolymers; Polymer technology; binding isotherms; polyelectrolyte-surfactant interactions; discontinuous volume transition; gel swelling; Monte Carlo simulation; polyelectrolyte gels;

    Abstract : Popular Abstract in Swedish Som man kan se av titeln handlar den här avhandlingen om polyelektrolytgeler. Vad är nu polyelektrolyter och vad är geler? Och vad är de bra till? Polymerer Polymerer är långa molekylkedjor, som förekommer i naturen men som också kan vara gjorda av människan. READ MORE

  2. 2. Swelling of Cellulose Fibrillar Matrices and Gels

    University dissertation from KTH Royal Institute of Technology

    Author : Pernilla Karlsson; KTH.; [2019]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; swelling; hydrogel; cellulose; wood; cellulose fibrils; Fiber- och polymervetenskap; Fibre and Polymer Science;

    Abstract : One of the major challenges of today´s society is to find a sustainable way to create a living based on the resources on earth. It is a challenge that includes a transition from fossil-based materials to renewable/biodegradable raw materials and also the creation of an environmentally friendly circular material flow. READ MORE

  3. 3. Heterogeneities in polymer gels: Effects on swelling and mechanical properties

    University dissertation from KTH Royal Institute of Technology

    Author : Mikael Larsson; [2010]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Elastomer; Phase separation; HPMC; Heterogeneities; Polyacrylic acid.; Microfibrillated cellulose; Gel; Filler; Glass transition temperature;

    Abstract : Polymeric hydrogels is a class of scientifically interesting materials that are being extensively studied. They are found in numerous applications within; drug delivery, hygiene products, food industry, analytical chemistry, etc. In addition, polymeric hydrogels have promising future applications as; cell scaffolds, implants, sensors, etc. READ MORE

  4. 4. Properties and Applications of Temperature Sensitive Gels

    University dissertation from Department of Chemical Engineering, Lund University

    Author : Matz Andersson; [1996]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Chemical technology and engineering; Swelling kinetics; Poly N-isopropylacrylamide gel; NiPAAm; Immobilisation; Hydrogels; Gel extraction; Flory-Huggins; Diffusion; Controlled Release; Kemiteknik och kemisk teknologi;

    Abstract : The work presented deals with the characterisation and application of critical gels. In order to provide a theoretical foundation, the thermodynamics of the reversible swelling and shrinking behaviour of such gels is outlined. The temperature-sensitive poly(N-isopropylacrylamide) gel (NiPAAm) was chosen for experimental investigation. READ MORE

  5. 5. On the Structure and Dynamics of Polyelectrolyte Gel Systems and Gel-surfactant Complexes

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Per Johan Råsmark; Uppsala universitet.; [2004]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Physical chemistry; polyelectrolyte gel; microgel; dynamic light scattering; Raman spectroscopy; periodic boundary conditions; percolation; hypersphere; Monte Carlo; Brownian dynamics; Fysikalisk kemi; NATURAL SCIENCES Chemistry Physical chemistry; NATURVETENSKAP Kemi Fysikalisk kemi;

    Abstract : This thesis describes the results of experimental work on polyelectrolyte gels and their interaction with oppositely charged surfactants, and presents two new algorithms applicable to the simulation of colloid and polymer systems.The model systems investigated were crosslinked poly(acrylate) (PA) and poly(styrene sulphonate) (PSS), and the surfactant was dodecyl trimethylammonium bromide (DoTAB). READ MORE