Search for dissertations about: "IPN"

Showing result 1 - 5 of 8 swedish dissertations containing the word IPN.

2. 1. Foam Core Materials for High Performance Sandwich Constructions: Preparation, Testing and Properties

   Author : Mikael Danielsson; Chalmers tekniska högskola; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; IPN; core material; low temperature; polyurea; polyethersulfone; gradient structure; foam; PVC; sandwich; waste; fire; smoke; toxicity; mechanical properties; Inter Penetrating Polymer Network; dynamic properties; high temperature;

   Abstract : The basic task for foams used as core materials in sandwich constructions is to separate the skin layers in order to enhance stiffness with little contribution to the total weight. However, modern design in sandwich technology require that core materials contribute to the perfor-mance with specific mechanical and physical properties. READ MORE

4. 2. Effect of solvents during material treatment applications : tuning hydrophilicity of silicone rubber and drug loading in mesoporous silica

   Author : Anna Hillerström; Jan van Stam; Lennart Piculell; Karlstads universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Solvents; liquid carbon dioxide; Interpenetrating Polymer Network IPN ; silicone rubber; hydrophilic; phase domains; mesoporous silica; ibuprofen; adsorption isotherms; release; Kemi; Chemistry;

   Abstract : Choosing the right solvent is critical for many industrial applications. A useful property for selection of solvents is their solubility parameters. This concept of solubility parameters is central to this thesis and has been used in two different case studies of material treatment applications. READ MORE

5. 3. Ultrasound-guided regional anesthesia in children and adults: aspects on central and peripheral blocks

   Author : Märit Lundblad; Karolinska Institutet; Karolinska Institutet; []
   Keywords : ;

   Abstract : The universal use of regional anesthesia has previously been hampered by fundamental factors, e.g. excessive failure rates, inability to detected anatomical variations and fear for unintentional tissue damage; all due to the inherent imprecision of previous localization techniques. READ MORE

6. 4. Hyaluronan Based Biomaterials with Imaging Capacity for Tissue Engineering

   Author : Yu Zhang; Dmitri Ossipov; Carsten Werner; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; hyaluronan; hydrogel; scaffold; tissue engineering; imaging; interpenetrating network; MRI; fluorescence imaging; scaffold degradation;

   Abstract : This thesis presents the preparation of hyaluronan-based biomaterials with imaging capability and their application as scaffolds in tissue engineering. First, we have synthesized HA derivatives functionalized with different chemoselective groups. READ MORE

7. 5. Morphology and Properties of Polymer Blends -Polypropylene and a Thermoplastic Elastomer -Polypropylene/Polyamide (1/1) and a Modified Thermoplastic Elastomer

   Author : Bertil Ohlsson; Centrum för analys och syntes; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Reactive Processing; Compatibilization; Thermal Properties; Mechanical Properties; Morphology; SEBS; Polyamide; Polymer Blends; Polypropylene; Polymer technology; biopolymers; Polymerteknik;

   Abstract : The search for polymeric materials with new property profiles has stimulated a great interest into polymer blends and reactive processing. During recent years many new blends have reached the market. READ MORE