Number of the records: 1  

Phase structure of symmetric tri-block-copolymers and their blends

  1. 1.
    0023705 - ÚMCH 2006 RIV PL eng J - Journal Article
    Baldrian, Josef - Steinhart, Miloš - Sikora, Antonín - Amenitsch, H. - Bernstorff, S.
    Phase structure of symmetric tri-block-copolymers and their blends.
    [Fázová struktura symetrických trojblokových kopolymerů a jejich směsí.]
    Fibres & Textiles in Eastern Europe. Roč. 13, č. 5 (2005), s. 35-40. ISSN 1230-3666. E-ISSN 1230-3666
    R&D Projects: GA ČR GA203/03/0611
    Institutional research plan: CEZ:AV0Z40500505
    Keywords : crystallization * block copolymers * blends
    Subject RIV: CD - Macromolecular Chemistry
    Impact factor: 0.397, year: 2005

    The series of block-copolymers blends PEO-b-PPO-b-PEO/PEO were studied during heating and cooling. The samples form different structures (lamellar, hexagonal and cubic) which change during both treatments. The periodicities formed in the structures are proportional to the molecular weight of pure PEO. The components of copolymers are not compatible; they are phase-separated in the melt also, which is demonstrated by the periodical structure observed by SAXS.

    Byly studovany směsi blokových kopolymerů PEO-b-PP-/PEO během zahřívání a ochlazování. Ve směsích se vytvořily lamelární hexagonální a kubické struktury. Periodicity v těchto strukturách byly úměrné molekulové váze PEO. V tavenině byly složky PEO a PPO fázově separovány a tvořily periodickou strukturu.
    Permanent Link: http://hdl.handle.net/11104/0112302

     
     
Number of the records: 1  

  This site uses cookies to make them easier to browse. Learn more about how we use cookies.