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

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

   Sammanfattning : 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. LÄS MER

3. 2. Ageing behavior of plastics used in automotive fuel systems

   Författare :Xin-Feng Wei; Mikael S. Hedenqvist; Richard Olsson; Ulf W Gedde; Pieter Gijsman; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Automotive; Ageing; Polyamide; Diesel; Biodiesel; Diffusion; Oxidation; Plasticizer migration; Mechanical properties; Fracture behavior.; Fordon; Åldrande; Polyamid; Diesel; Biodiesel; Diffusion; Oxidation; Mjukgöraravgång; Mekaniska egenskaper; Brottegenskaper;

   Sammanfattning : The increase in service temperature and the use of biobased fuels, such as biodiesel, have raised concerns on the short/long-term performance of plastic components used in automotive fuel systems.In this work the ageing behavior of unreinforced and glass-fibre reinforced polyamide 12 (PA12), exposed to three different fuels (petroleum diesel, biodiesel, and a mixture of these (80/20)) at high temperature, was investigated. LÄS MER

4. 3. Design of renewable and functional polyamides and polyhydroxyurethanes with tunable structure-property relationships

   Författare :Charalampos Pronoitis; Karin Odelius; Minna Hakkarainen; Stefan Naumann; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; polyamide; polyhydroxyurethane; polyester; ring-opening aminolysis; ring-opening polymerization; covalent adaptable network; copolymer; complex architecture; polyamid; polyhydroxyuretan; polyester; ringöppningsaminolys; ringöppningspolymerisation; dynamiska nätverk; sampolymer; komplex arkitektur; Fiber- och polymervetenskap; Fibre and Polymer Science;

   Sammanfattning : Redesigning polymeric materials and rethinking their use is imperative in the prospect of a more sustainable future. Critical aspects in this endeavor are the use of renewable monomers to decrease the environmental footprint, implementing green syntheses and production processes and the design for increased recyclability as an end-of-life option to diverge from the generation of plastic waste. LÄS MER

5. 4. Preparation and Compatibilizing Properties of Poly(styrene-graft-ethylene oxide) in Polymer Blends

   Författare :Patric Jannasch; Centrum för analys och syntes; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Anionic Polymerization of Ethylene Oxide; Polystyrene; Polymer technology; biopolymers; Polymerteknik; Ethoxylation; Grafting; Poly styrene-graft-ethylene oxide ; Crystallization; Interphases; Macrophases; Poly butyl acrylate ; Compatibilization of Polymer Blends; Polyamide;

   Sammanfattning : One of the main trends in the polymer industry today is the increasing importance of polymer blends. Combining two or more immiscible polymers in a polymer blend often leads to multi-phase materials with desirable properties. LÄS MER

7. 5. Oxidative spreading in polypropylene as studied by iImaging chemiluminescence

   Författare :Petter Eriksson; KTH; []
   Nyckelord :Oxidation; Spreading; Chemiluminescence; Imaging; Polypropylene; PP; Polyamide; Gasphase;

   Sammanfattning : .... LÄS MER