SciELO - Scientific Electronic Library Online

 
vol.18 número3Biodegradation of polyurethane derived from castor oilBlenda de náilon-6,6/quitosana como adsorvente de corantes ácidos para reutilização das soluções de corantes tratadas em tingimentos de poliamida índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados

Journal

Artigo

Indicadores

Links relacionados

Compartilhar


Polímeros

versão impressa ISSN 0104-1428versão On-line ISSN 1678-5169

Resumo

PEREZ, Igor S. B.; MANRICH, Sati  e  MANRICH, Silvio. The effect of different block copolymers on post consumer HDPE/HIPS Blends: phase morphology and thermal properties. Polímeros [online]. 2008, vol.18, n.3, pp.207-214. ISSN 0104-1428.  https://doi.org/10.1590/S0104-14282008000300005.

Blending of post-consumer polyolefins/HIPS has been exploited for obtaining special films with a desired set of properties, which has required studies to understand the behavior of these materials. In this work the effects of commercial multiblock styrene-butadiene (SBS) and linear triblock styrene-(ethylene-co-butylene)-styrene (SEBS) copolymers in blends of post-consumer high density polyethylene (HDPE) and HIPS are reported. Thermal properties and phase morphology were comparatively analyzed for the additives aiming at verifying possible correlations between them. Decreased dimensions of the minor micro phase along with HDPE surface roughness after HIPS selective extraction, independently of the matrix being HIPS or HDPE, showed better effectiveness for SEBS as interfacial tension modifier or as surfactant at the different domains interface when compared with SBS. The results of thermal characterizations, e.g. lower HDPE melting temperature, lower degree of crystallinity, and higher polystyrene glass transition temperature in the presence of SEBS corroborated with this conclusion as it will be discussed further.

Palavras-chave : Post consumer HDPE/HIPS; blends; recycling; compatibilization; morphology; thermal characterization.

        · resumo em Português     · texto em Português     · Português ( pdf )

 

Creative Commons License Todo o conteúdo deste periódico, exceto onde está identificado, está licenciado sob uma Licença Creative Commons