Repository logo
 
Publication

Preparation of polypropylene-based nanocomposites using nanosized MCM-41 as support andin situpolymerization

2016Journal article Restricted access
Simple item page
dc.contributor.authorGonzález, Darío M.
dc.contributor.authorQuijada, Raúl
dc.contributor.authorYazdani-Pedram, Mehrdad
dc.contributor.authorLourenço, J. P.
dc.contributor.authorRibeiro, M. Rosário
dc.date.accessioned2016-02-25T16:42:28Z
dc.date.available2016-02-25T16:42:28Z
dc.date.issued2016
dc.description.abstractMCM-41 nanoparticles were used for preparing nanocomposites through the in situ polymerization of propylene. The performance of the catalytic system and the final properties of thematerials obtained are highly dependent on themethodology used for impregnation of the catalyst onto the support particles, and therefore an optimization study for the impregnation methodology of the catalyst (Me2Si(Ind)2ZrCl2)was carried out. Two differentmethodologieswere used; the results in terms of catalytic activity and polymer molecular masses indicated that the most promising one involved the pre-activation of the catalyst with the cocatalyst, methylaluminoxane, followed by impregnation onto the MCM-41 nanoparticles. Thus, an optimized route for the preparation of polypropylene nanocomposites achieving significant improvements in catalyst activity was developed. The nanocomposite materialswere characterized by GPC, TGA and DSC. The dispersion state and the size of the nanoparticles incorporated in the polypropylene matrix were investigated by transmission electron microcopy. Additionally, this methodology allows simultaneous control of the desired amount of support and the concentration of catalyst to be used in the in situ polymerization.pt_PT
dc.identifier.citationPolym Int 2016; 65: 320–326pt_PT
dc.identifier.doihttps://dx.doi.org/10.1002/pi.5057pt_PT
dc.identifier.issn0959-8103
dc.identifier.otherAUT: JLO01215;
dc.identifier.urihttp://hdl.handle.net/10400.1/7748
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherWiley / Society of Chemical Industrypt_PT
dc.relation.publisherversionhttp://onlinelibrary.wiley.com/doi/10.1002/pi.5057/epdfpt_PT
dc.subjectMCM-41 nanoparticlespt_PT
dc.subjectSupported catalystpt_PT
dc.subjectMetallocene catalystpt_PT
dc.subjectPolypropylenept_PT
dc.subjectNanocompositespt_PT
dc.titlePreparation of polypropylene-based nanocomposites using nanosized MCM-41 as support andin situpolymerizationpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage326pt_PT
oaire.citation.issue3
oaire.citation.startPage320pt_PT
oaire.citation.titlePolymer Internationalpt_PT
oaire.citation.volume65pt_PT
person.familyNameLourenço
person.givenNameJoão P.
person.identifier634248
person.identifier.ciencia-idF81F-A1F0-2A7C
person.identifier.orcid0000-0002-0501-6672
person.identifier.ridA-7758-2008
person.identifier.scopus-author-id57195730600
rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicationf66ab886-d989-4c1d-9550-527507723c26
relation.isAuthorOfPublication.latestForDiscoveryf66ab886-d989-4c1d-9550-527507723c26

Files

Original bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
Gonz-lez_et_al-2016-Polymer_International.pdf
Size:
544.55 KB
Format:
Adobe Portable Document Format
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
3.46 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

FCT2-Artigos (em revistas ou actas indexadas)