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https://repositorio.ufba.br/handle/ri/8644
metadata.dc.type: | Artigo de Periódico |
Title: | Polypropylene-(high density polyethylene) precipitation from stirred solutions |
Other Titles: | European Polymer Journal |
Authors: | Esperidião, Maria Cecília Azevedo Galembeck, Fernando |
metadata.dc.creator: | Esperidião, Maria Cecília Azevedo Galembeck, Fernando |
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. |
URI: | http://www.repositorio.ufba.br/ri/handle/ri/8644 |
Issue Date: | 1993 |
Appears in Collections: | Artigo Publicado em Periódico (Química) |
Files in This Item:
File | Description | Size | Format | |
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Esperidão 01.pdf Restricted Access | 789,62 kB | Adobe PDF | View/Open Request a copy |
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