Polystyrene modified by grafting

Polystyrene modified by grafting

Several grades of modified polystyrene were obtained through the graft polymerization of styrene in the presence of modifiers such as ethylene-vinyl acetate (EVA), low density polyethylene (PE), and polybutadiene (PB). These modifiers were used by themselves and in combination. In all cases, the modifier concentration was kept constant at 8% w/w, and the product properties were determined as a function of composition. The polymerization technique employed was that of mass/suspension. The best results were obtained for the PS/mixed modifiers systems. The results confirm that graft copolymers present better impact properties than those of mechanical blends of similar composition.

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Bibliographic Details
Main Authors: Rocha,Avani Maria C, Carvalho,Laura Hecker de, Souza,Antonio Gouveia de
Format: Digital revista
Language:English
Published: Sociedade Brasileira de Química 1997
Online Access:http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50531997000300002
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spelling oai:scielo:S0103-505319970003000022011-01-31Polystyrene modified by graftingRocha,Avani Maria CCarvalho,Laura Hecker deSouza,Antonio Gouveia de polystyrene grafting polybutadiene ethylene-vinyl acetate polyethylene Several grades of modified polystyrene were obtained through the graft polymerization of styrene in the presence of modifiers such as ethylene-vinyl acetate (EVA), low density polyethylene (PE), and polybutadiene (PB). These modifiers were used by themselves and in combination. In all cases, the modifier concentration was kept constant at 8% w/w, and the product properties were determined as a function of composition. The polymerization technique employed was that of mass/suspension. The best results were obtained for the PS/mixed modifiers systems. The results confirm that graft copolymers present better impact properties than those of mechanical blends of similar composition.info:eu-repo/semantics/openAccessSociedade Brasileira de QuímicaJournal of the Brazilian Chemical Society v.8 n.3 19971997-06-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50531997000300002en10.1590/S0103-50531997000300002
institution SCIELO
collection OJS
country Brasil
countrycode BR
component Revista
access En linea
databasecode rev-scielo-br
tag revista
region America del Sur
libraryname SciELO
language English
format Digital
author Rocha,Avani Maria C
Carvalho,Laura Hecker de
Souza,Antonio Gouveia de
spellingShingle Rocha,Avani Maria C
Carvalho,Laura Hecker de
Souza,Antonio Gouveia de
Polystyrene modified by grafting
author_facet Rocha,Avani Maria C
Carvalho,Laura Hecker de
Souza,Antonio Gouveia de
author_sort Rocha,Avani Maria C
title Polystyrene modified by grafting
title_short Polystyrene modified by grafting
title_full Polystyrene modified by grafting
title_fullStr Polystyrene modified by grafting
title_full_unstemmed Polystyrene modified by grafting
title_sort polystyrene modified by grafting
description Several grades of modified polystyrene were obtained through the graft polymerization of styrene in the presence of modifiers such as ethylene-vinyl acetate (EVA), low density polyethylene (PE), and polybutadiene (PB). These modifiers were used by themselves and in combination. In all cases, the modifier concentration was kept constant at 8% w/w, and the product properties were determined as a function of composition. The polymerization technique employed was that of mass/suspension. The best results were obtained for the PS/mixed modifiers systems. The results confirm that graft copolymers present better impact properties than those of mechanical blends of similar composition.
publisher Sociedade Brasileira de Química
publishDate 1997
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50531997000300002
work_keys_str_mv AT rochaavanimariac polystyrenemodifiedbygrafting
AT carvalholauraheckerde polystyrenemodifiedbygrafting
AT souzaantoniogouveiade polystyrenemodifiedbygrafting
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