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Please use this identifier to cite or link to this item: http://repositorio.ufba.br/ri/handle/ri/8644

Title: Polypropylene-(high density polyethylene) precipitation from stirred solutions
Other Titles: European Polymer Journal
Authors: Esperidião, Maria Cecília Azevedo
Galembeck, Fernando
Issue Date: 1993
Abstract: The fast precipitation of mixtures of polypropylene (PP) with high density polyethylene (HDPE) from decalin solutions is affected by the stirring rate of the solutions. With fast stirring, two types of precipitates were obtained viz. globules dispersed in the liquid phase and fibres adhering to the stirrer. Studies by i.r., WAXD, DSC and optical microscopy indicated that the fibrous precipitate is more birefringent, richer in HDPE and richer in the PP fractions with higher isotactic helical content than the globular precipitate. The dried precipitates recrystallize during storage. HDPE undergoes “pseudo-monoclinic”-orthorhombic solid state phase transition.
Description: Texto completo: acesso restrito. p.993–997
URI: http://www.repositorio.ufba.br/ri/handle/ri/8644
ISSN: 0014-3057
Appears in Collections:Artigos Publicados em Periódicos (Quimica)

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