Sökning: "PP"

Visar resultat 1 - 5 av 250 avhandlingar innehållade ordet PP.

  1. 1. Analytical techniques for quality assessment of separated and commingled recycled polymer fractions

    Författare :Walker Camacho; KTH; []
    Nyckelord :recycling; hdpe; pp; blends; nylon 6.6; abs; water content; mae; gc-ms; mir; chemiluminiscence;

    Sammanfattning : Different methods for quality assessment of separated andcommingled plastics from household and electronic waste havebeen developed. Especial attention has been given tospectroscopic methods since they are non-destructive andrequire little or no sample preparation at all. LÄS MER

  3. 2. Tuning the long-term properties to control biodegradation by surface modifications of agricultural fibres in biocomposites

    Författare :Thorsak Kittikorn; Monica Ek; Ferruccio Doghieri; KTH; []
    Nyckelord :agricultural fibres; biocomposites; renewable polymers; PP; PLA; PHBV; surface modifications; water uptake; microbial growth; biodegradation;

    Sammanfattning : Sustainable polymeric materials put emphasis on mastering the whole life-cycle of polymeric materials. This includes the choice of raw materials, selection of synthesis and processing, environmental impact during long-term use followed by detailed knowledge about recycling and waste management. LÄS MER

  4. 3. Mechanical and thermal properties of recycled WEEE plastic blends

    Författare :Sandra Tostar; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; SEBS; HIPS; extrusion; WEEE; WEEEBR; melt-blending; plastics recycling; gamma irradiation; PP; ABS; compatibilization; polymer degradation;

    Sammanfattning : Electronic waste is the fastest growing waste stream today, and the recycling of the plastics from waste electrical and electronic equipment (WEEE) has attracted great attention recently for environmental reasons and to comply with the European Union’s (EUs) WEEE Directive. The plastics fraction in WEEE is between 20 and 35 weight % (wt%). LÄS MER

  5. 4. Co-stimulation in gut mucosal immunity. Evidence of a differential regulationof local and systemic responses

    Författare :Eva Gärdby; Göteborgs universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; mucosal immunity; PP; cholera toxin; oral immunization; co-stimulation; Th1 Th2;

    Sammanfattning : In recent years we have learned that co-stimulatory factors are required as second signals for optimal T cell stimulation. Most types of immune responses are, therefore, dependent on the co-stimulatory signals that are provided by infection or immunization. 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