Sökning: "Crystalline Morphology"

Visar resultat 1 - 5 av 95 avhandlingar innehållade orden Crystalline Morphology.

1. 1. Polypropylene : Morphology, defects and electrical breakdown

   Författare :Sari J. Laihonen; Ulf W. Gedde; Erling Ildsten; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Chemical engineering; polypropylene; poly propylene-stat-ethylene ; crystal structure; morphology; crystallinity; crystallization kinetics; lamellae; spherulite; defect; Kemiteknik; Chemical engineering; Kemiteknik;

   Sammanfattning : Crystal structure, morphology and crystallization kinetics of melt-crystallized polypropylene and poly(propylene-stat-ethylene) fractions with 2.7 to 11.0 mol% of ethylene were studied by differential scanning calorimeter, wide- and small-angle X-ray scattering, polarized light microscopy, transmission electron microscopy and infrared spectroscopy. LÄS MER

3. 2. Barrier Properties of Liquid Crystalline Polymers and their Blends with PE and PETP

   Författare :Göran Flodberg; KTH; []
   Nyckelord :Blends; polyethylene; poly ethylene terephthalate ; liquid crystalline polymers; Vectra; barrier properties; morphology; pouches; sealing; migration; high performance liquid chromatography; HPLC ;

   Sammanfattning : .... LÄS MER

4. 3. Crystallinity and Morphology of Starch Polymers in Films

   Författare :Åsa Rindlav Westling; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; morphology; amylose; surface; thermal transitions; amylopectin; starch; crystallinity; film;

   Sammanfattning : Starch is a renewable material that can be converted into biodegradable plastic products, or films with excellent oxygen barrier properties. Films of potato starch, amylose, amylopectin and blends thereof were made by solution casting. LÄS MER

5. 4. The high Arctic summer aerosol : Size, chemical composition, morphology and evolution over the pack-ice

   Författare :Evelyne Hamacher-Barth; Caroline Leck; Stephan Weinbruch; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Arctic; aerosol; marine gel; electron microscopy; EDX-spectroscopy; chemical composition; morphology; size distribution; atmosfärvetenskap och oceanografi; Atmospheric Sciences and Oceanography;

   Sammanfattning : Aerosol particles, especially in the high Arctic are still not very well represented in climate models. Particle size and number concentrations are strongly under-predicted and temporal variations of aerosol composition and size are still not very well understood, mainly due to the sparsity of observations. LÄS MER

7. 5. Graphene Oxide Technology to Advance the Performance of Poly(lactic acid) Materials

   Författare :Huan Xu; Minna Hakkarainen; Jean-Marie Raquez; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Poly lactic acid ; Graphene Oxide; Stereocomplex; Nucleation Mechanism; Crystalline Morphology; Filler Structure; Mechanical Properties; Gas Barrier; Teknisk materialvetenskap; Materials Science and Engineering;

   Sammanfattning : In the past two decades, a burgeoning biorefinery concept has grown in concert with the materials science, contributing to the rise of biobased materials that respect environment and are versatile for various applications. An excellent example is poly(lactic acid) (PLA) that exhibits high strength and desirable degradability. LÄS MER