Sökning: "X-ray diffraction of polymers"

Visar resultat 11 - 15 av 29 avhandlingar innehållade orden X-ray diffraction of polymers.

  1. 11. Studies on structure and mechanism at formation of solid solutions and solid dispersions of hydrophobic drugs in polymers

    Författare :Marie Wulff; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Pharmaceutical chemistry; Farmaceutisk kemi; Pharmaceutical chemistry; Farmaceutisk kemi; Physical and Inorganic Pharmaceutical Chemistry; fysikalisk och oorganisk farmaceutisk kemi;

    Sammanfattning : The aim of the studies was to investigate the structures formed and mechanisms involved, when a hydrophobic drug is dispersed in a polymer carrier. The effect of different additives, like surfactants and cyclodextrins, was evaluated. The dispersions were prepared by the melting method. LÄS MER

  3. 12. Melt spinning of poly(vinylidene fluoride) mono- and bicomponent fibres and yarns : the formation of piezoelectric beta-phase crystallinity

    Författare :Anja Lund; Högskolan i Borås; []
    Nyckelord :fibres; PVDF; Textilteknologi;

    Sammanfattning : The present study investigates the possibilities of manufacturing piezoelectric polymer fibres or yarns for integration into textile materials. The polymers known to give the strongest piezoelectric effects are poly(vinylidene fluoride) (PVDF) and some of its copolymers. LÄS MER

  4. 13. On processing of thermoplastic starch

    Författare :Mats Thunwall; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; amylose; starch; extrusion; thermoplastic starch;

    Sammanfattning : Starch is a biodegradable material produced in many different crop plants. Since it is biodegradable, inexpensive, generally has good barrier properties and comes from a renewable source it would be an ideal material to use in e.g. packaging applications. LÄS MER

  5. 14. Development of hierarchical cellulosic reinforcement for polymer composites

    Författare :Abdelghani Hajlane; Angelika Bachinger; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Polymera konstruktionsmaterial; Polymeric Composite Materials;

    Sammanfattning : Cellulose is an environmentally friendly material which is obtainable in vast quantities, since it is present in every plant. Cellulosic fibers are commercially found in two forms: natural (flax, hemp, cotton, sisal, wood, etc.) and regenerated cellulose fibers (RCF). LÄS MER

  7. 15. Strategies to improve the aging, barrier and mechanical properties of chitosan, whey and wheat gluten protein films

    Författare :Idoia Olabarrieta; Mikael Hedenqvist; Jose Maria Lagaron; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Chemistry; biodegradable polymers; chitosan; whey protein; wheat gluten; poly ε-caprolactone ; montmorillonite; food packaging; permeability; mechanical properties; aging; pH; solubility; migration; solution casting.; Kemi; Chemistry; Kemi;

    Sammanfattning : Chitosan, Whey Protein Isolate (WPI) and vital wheat gluten (WG) are three biomaterials that have quite promising properties for packaging purposes. They have good film forming properties and good gas barrier properties in dry conditions. LÄS MER