Publicação
Morphology and rheology of polypropylene/polystyrene/clay nanocomposites in batch and continuous melt mixing processes
| Resumo: | The addition of organically modified layered silicates (organoclay) to highly immiscible polypropylene/polystyrene, PP/PS, blends leads to a significant change in blend morphology and rheology. In this study, the kinetics for morphological development of the blend nanocomposites was studied by two mixing methods (internal batch mixing and continuous mixing), with a focus on the mechanism of dispersion of the silicate layers and its dependence on mixing conditions. Through the use of a twin-screw co-rotating extruder specially modified with sampling ports along its length it was possible to study, for the first time, the kinetics of morphology developed upon mixing. The results show that the evolution of silicate layer dispersion during morphology occurs by and large relatively early in the mixing process and that the most favorable breaking process of the dispersed phase occurs initially due to the breaking up of the initial silicate tactoids into thinner ones and also due to their presence inside it. As a consequence of these sequential processes, the organoclay layers end up at the interface between the PP and the polystyrene phases and stabilize the morphology. |
|---|---|
| Autores principais: | Cho, Seahan |
| Outros Autores: | Hong, Joung Sook; Lee, Seung Jong; Ahn, Kyung Hyun; Covas, J. A.; Maia, J. M. |
| Assunto: | Batch melt mixing Continuous melt mixing Morphology development Organoclay PP/PS blends |
| Ano: | 2011 |
| País: | Portugal |
| Tipo de documento: | artigo |
| Tipo de acesso: | acesso restrito |
| Instituição associada: | Universidade do Minho |
| Idioma: | inglês |
| Origem: | RepositóriUM - Universidade do Minho |
| _version_ | 1867439883856904192 |
|---|---|
| author | Cho, Seahan |
| author2 | Hong, Joung Sook Lee, Seung Jong Ahn, Kyung Hyun Covas, J. A. Maia, J. M. |
| author2_role | author author author author author |
| author_facet | Cho, Seahan Hong, Joung Sook Lee, Seung Jong Ahn, Kyung Hyun Covas, J. A. Maia, J. M. |
| author_role | author |
| contributor_name_str_mv | RepositóriUM - Universidade do Minho |
| country_str | PT |
| creators_json_txt | [{\"Person.name\":\"Cho, Seahan\"},{\"Person.name\":\"Hong, Joung Sook\"},{\"Person.name\":\"Lee, Seung Jong\"},{\"Person.name\":\"Ahn, Kyung Hyun\"},{\"Person.name\":\"Covas, J. A.\"},{\"Person.name\":\"Maia, J. M.\"}] |
| datacite.contributors.contributor.contributorName.fl_str_mv | RepositóriUM - Universidade do Minho |
| datacite.creators.creator.creatorName.fl_str_mv | Cho, Seahan Hong, Joung Sook Lee, Seung Jong Ahn, Kyung Hyun Covas, J. A. Maia, J. M. |
| datacite.date.Accepted.fl_str_mv | 2011-02-01T00:00:00Z |
| datacite.date.available.fl_str_mv | 2011-12-14T11:23:58Z |
| datacite.date.embargoed.fl_str_mv | 2011-12-14T11:23:58Z |
| datacite.rights.fl_str_mv | http://purl.org/coar/access_right/c_16ec |
| datacite.subjects.subject.fl_str_mv | Batch melt mixing Continuous melt mixing Morphology development Organoclay PP/PS blends |
| datacite.titles.title.fl_str_mv | Morphology and rheology of polypropylene/polystyrene/clay nanocomposites in batch and continuous melt mixing processes |
| dc.contributor.none.fl_str_mv | RepositóriUM - Universidade do Minho |
| dc.creator.none.fl_str_mv | Cho, Seahan Hong, Joung Sook Lee, Seung Jong Ahn, Kyung Hyun Covas, J. A. Maia, J. M. |
| dc.date.Accepted.fl_str_mv | 2011-02-01T00:00:00Z |
| dc.date.available.fl_str_mv | 2011-12-14T11:23:58Z |
| dc.date.embargoed.fl_str_mv | 2011-12-14T11:23:58Z |
| dc.format.none.fl_str_mv | application/pdf |
| dc.identifier.none.fl_str_mv | https://hdl.handle.net/1822/15176 |
| dc.language.none.fl_str_mv | eng |
| dc.publisher.none.fl_str_mv | Wiley-VCH Verlag |
| dc.rights.none.fl_str_mv | http://purl.org/coar/access_right/c_16ec |
| dc.subject.none.fl_str_mv | Batch melt mixing Continuous melt mixing Morphology development Organoclay PP/PS blends |
| dc.title.fl_str_mv | Morphology and rheology of polypropylene/polystyrene/clay nanocomposites in batch and continuous melt mixing processes |
| dc.type.none.fl_str_mv | http://purl.org/coar/resource_type/c_6501 |
| description | The addition of organically modified layered silicates (organoclay) to highly immiscible polypropylene/polystyrene, PP/PS, blends leads to a significant change in blend morphology and rheology. In this study, the kinetics for morphological development of the blend nanocomposites was studied by two mixing methods (internal batch mixing and continuous mixing), with a focus on the mechanism of dispersion of the silicate layers and its dependence on mixing conditions. Through the use of a twin-screw co-rotating extruder specially modified with sampling ports along its length it was possible to study, for the first time, the kinetics of morphology developed upon mixing. The results show that the evolution of silicate layer dispersion during morphology occurs by and large relatively early in the mixing process and that the most favorable breaking process of the dispersed phase occurs initially due to the breaking up of the initial silicate tactoids into thinner ones and also due to their presence inside it. As a consequence of these sequential processes, the organoclay layers end up at the interface between the PP and the polystyrene phases and stabilize the morphology. |
| dirty | 0 |
| eu_rights_str_mv | restrictedAccess |
| format | article |
| fulltext.url.fl_str_mv | https://repositorium.uminho.pt/bitstreams/52a2c5cd-93ac-472b-8b02-d1e9b5b1f51d/download |
| id | rum_7cf537675d5cf294e29cec9aa4d8a1a4 |
| identifier.url.fl_str_mv | https://hdl.handle.net/1822/15176 |
| instacron_str | repositorium |
| institution | Universidade do Minho |
| instname_str | Universidade do Minho |
| language | eng |
| network_acronym_str | rum |
| network_name_str | RepositóriUM - Universidade do Minho |
| oai_identifier_str | oai:repositorium.uminho.pt:1822/15176 |
| organization_str_mv | urn:organizationAcronym:repositorium |
| person_str_mv | Cho, Seahan Hong, Joung Sook Lee, Seung Jong Ahn, Kyung Hyun Covas, J. A. Maia, J. M. |
| publishDate | 2011 |
| publisher.none.fl_str_mv | Wiley-VCH Verlag |
| reponame_str | RepositóriUM - Universidade do Minho |
| repository_id_str | urn:repositoryAcronym:rum |
| service_str_mv | urn:repositoryAcronym:rum |
| spelling | engWiley-VCH VerlagporThe addition of organically modified layered silicates (organoclay) to highly immiscible polypropylene/polystyrene, PP/PS, blends leads to a significant change in blend morphology and rheology. In this study, the kinetics for morphological development of the blend nanocomposites was studied by two mixing methods (internal batch mixing and continuous mixing), with a focus on the mechanism of dispersion of the silicate layers and its dependence on mixing conditions. Through the use of a twin-screw co-rotating extruder specially modified with sampling ports along its length it was possible to study, for the first time, the kinetics of morphology developed upon mixing. The results show that the evolution of silicate layer dispersion during morphology occurs by and large relatively early in the mixing process and that the most favorable breaking process of the dispersed phase occurs initially due to the breaking up of the initial silicate tactoids into thinner ones and also due to their presence inside it. As a consequence of these sequential processes, the organoclay layers end up at the interface between the PP and the polystyrene phases and stabilize the morphology.application/pdfporMorphology and rheology of polypropylene/polystyrene/clay nanocomposites in batch and continuous melt mixing processesCho, SeahanHong, Joung SookLee, Seung JongAhn, Kyung HyunCovas, J. A.Maia, J. M.HostingInstitutionOrganizationalRepositóriUM - Universidade do Minhoe-mailmailto:repositorium@usdb.uminho.ptrepositorium@usdb.uminho.ptISSNIsPartOf1438-7492DOIIsPartOf10.1002/mame.2010001942011-12-14T11:23:58Z2011-022011-02-01T00:00:00ZHandlehttps://hdl.handle.net/1822/15176http://purl.org/coar/access_right/c_16ecrestricted accessBatch melt mixingContinuous melt mixingMorphology developmentOrganoclayPP/PS blends1018257 bytesliteraturehttp://purl.org/coar/resource_type/c_6501journal articlehttp://purl.org/coar/access_right/c_16ecapplication/pdffulltexthttps://repositorium.uminho.pt/bitstreams/52a2c5cd-93ac-472b-8b02-d1e9b5b1f51d/download |
| spellingShingle | Morphology and rheology of polypropylene/polystyrene/clay nanocomposites in batch and continuous melt mixing processes Cho, Seahan Batch melt mixing Continuous melt mixing Morphology development Organoclay PP/PS blends |
| status | SINGLETON |
| subject.fl_str_mv | Batch melt mixing Continuous melt mixing Morphology development Organoclay PP/PS blends |
| title | Morphology and rheology of polypropylene/polystyrene/clay nanocomposites in batch and continuous melt mixing processes |
| title_full | Morphology and rheology of polypropylene/polystyrene/clay nanocomposites in batch and continuous melt mixing processes |
| title_fullStr | Morphology and rheology of polypropylene/polystyrene/clay nanocomposites in batch and continuous melt mixing processes |
| title_full_unstemmed | Morphology and rheology of polypropylene/polystyrene/clay nanocomposites in batch and continuous melt mixing processes |
| title_short | Morphology and rheology of polypropylene/polystyrene/clay nanocomposites in batch and continuous melt mixing processes |
| title_sort | Morphology and rheology of polypropylene/polystyrene/clay nanocomposites in batch and continuous melt mixing processes |
| topic | Batch melt mixing Continuous melt mixing Morphology development Organoclay PP/PS blends |
| topic_facet | Batch melt mixing Continuous melt mixing Morphology development Organoclay PP/PS blends |
| url | https://hdl.handle.net/1822/15176 |
| visible | 1 |