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dc.contributor.author
Castillo, Luciana Andrea
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dc.contributor.author
Capiati, Numa Jose
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dc.contributor.author
Barbosa, Silvia Elena
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dc.contributor.other
Silva, Luciano Paulino
dc.contributor.other
Barbosa Fernandes, Eduardo
dc.date.available
2021-04-16T16:51:54Z
dc.date.issued
2013
dc.identifier.citation
Castillo, Luciana Andrea; Capiati, Numa Jose; Barbosa, Silvia Elena; Mechanical properties of polypropylene/talc composites: Role of the mineral morphology and particle surface modification; Nova Science Publishers; 2013; 145-160
dc.identifier.isbn
978-1-62417-142-0
dc.identifier.uri
http://hdl.handle.net/11336/130219
dc.description.abstract
Talc filled Polypropylene (PP) is a very used versatile composite as it combines a relative good performance with easy processability and low cost. Talc addition strongly affects PP properties mainly by their effect on crystallization. It is an efficient nucleating agent, changing the morphology, chain orientation, crystal type and crystallinity degree of PP. Such properties can indeed be tailored by changing the volume fraction, shape, and size of the talc particles. According to the genesis, talc has different morphologies and different associated minerals. These aspects conferred it specific whiteness, particle shape, oil absorption, and amphiphilic behavior. On the other hand, the geomorphologic and geochemical characteristics, as well as the mineral processing (milling, treatments, among others), also affect thermal, mechanical and optical properties of PP/talc composites. In order to obtain a higher mechanical performance of PP/talc composites it is necessary to assure a good dispersion and distribution of particles, having very large aspect ratio, and a good particle/matrix interfacial adhesion. Generally, to improve the filler/polymer interaction it is a common practice to modify the filler surface. In this work, a systematic analysis of the influence on talc geomorphology and different surface treatments on the PP/talc composites structure and their mechanical properties is performed. Two well characterized talc samples, micro and microcrystalline were used. Thus, a low costs surface treatment is proposed in order to improve the mechanical performance, by the way of adhesion enhancement and particle size strong reduction, but without increase the material price. An accurate particle characterization, between and after the treatment, was carried out in order to determined their morphological and surface aspects. A methodology to improve dispersive and distributive talc mixing in PP using a twin screw extruder is also proposed. Composite structure were characterized by differential scanning calorimetry, electronic microscopy, Fourier transform infrared and X-ray spectroscopy. Tensile properties were assessed and their relationship with the structure carefully analyzed. Very strong adhesion improvements were found either when macrocrystalline talc or treated one is used. The results confirm that composites processed with the higher aspect ratio particle, show a better mechanical behavior than the other. In the case of PP/treated talc composites, an improvement on dispersion, distribution and interfacial adhesion are observed, as a consequence of talc functionalization. However, the talc surface treatment has more influence on mechanical properties in only one of the composites, due to its efficiency depends on the intrinsic talc characteristic.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Nova Science Publishers
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dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
COMPOSITE
dc.subject
MINERAL MORPHOLOGY
dc.subject
SURFACE MODIFICATION
dc.subject.classification
Nano-materiales
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dc.subject.classification
Nanotecnología
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dc.subject.classification
INGENIERÍAS Y TECNOLOGÍAS
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dc.title
Mechanical properties of polypropylene/talc composites: Role of the mineral morphology and particle surface modification
dc.type
info:eu-repo/semantics/publishedVersion
dc.type
info:eu-repo/semantics/bookPart
dc.type
info:ar-repo/semantics/parte de libro
dc.date.updated
2021-03-12T19:16:15Z
dc.journal.pagination
145-160
dc.journal.pais
Estados Unidos
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dc.journal.ciudad
Nueva York
dc.description.fil
Fil: Castillo, Luciana Andrea. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; Argentina
dc.description.fil
Fil: Capiati, Numa Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; Argentina
dc.description.fil
Fil: Barbosa, Silvia Elena. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; Argentina
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.novapublishers.org/catalog/product_info.php?products_id=37905
dc.conicet.paginas
365
dc.source.titulo
Polypropylene: Synthesis, Applications and Environmental Concerns
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