Polypropylene and silica short fibers composites
The mechanical properties of composites strongly depend on the type of filler-polymeric matrix interface. An interface characterized by a strong bond between the filler and the matrix generally results in better mechanical properties. In this work, polypropylene, PP, was used as polymeric matrix and...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Universidade Estadual de Londrina
2012-04-01
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| Series: | Semina: Ciências Exatas e Tecnológicas |
| Subjects: | |
| Online Access: | http://www.uel.br/revistas/uel/index.php/semexatas/article/view/8965/10383 |
| _version_ | 1818147006467538944 |
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| author | Mariana Gava Segatelli Cristiane Aparecida da Silva Inez Valéria Pagotto Yoshida Maria do Carmo Gonçalves |
| author_facet | Mariana Gava Segatelli Cristiane Aparecida da Silva Inez Valéria Pagotto Yoshida Maria do Carmo Gonçalves |
| author_sort | Mariana Gava Segatelli |
| collection | DOAJ |
| description | The mechanical properties of composites strongly depend on the type of filler-polymeric matrix interface. An interface characterized by a strong bond between the filler and the matrix generally results in better mechanical properties. In this work, polypropylene, PP, was used as polymeric matrix and silica short fibers, SF, which are amorphous biogenic silica, were employed as filler. In order to promote a better filler-matrix interfacial adhesion, these fibers were previously modified with vinyltrimethoxysilane. The composites were prepared by extrusion and injection molding processes and their mechanical properties were evaluated according to tensile testing, ASTM D 268, by means a fractional factorial design (25-1). The studied factors included fiber content in the matrix, fiber surface modification, injection flow and testing rate. The composite cryogenic fractured surfaces were investigated by field emission scanning electron microscopy, FESEM. The fiber modification promoted a better fiber-matrix interfacial adhesion, resulting in optimized mechanical properties in relation to the others. In this way, the fiber modification was the most important factor on the mechanical performance of the composites. |
| first_indexed | 2024-12-11T12:28:23Z |
| format | Article |
| id | doaj.art-8479caeb82aa4c14a7cfe792bf3d09e8 |
| institution | Directory Open Access Journal |
| issn | 1676-5451 1679-0375 |
| language | English |
| last_indexed | 2024-12-11T12:28:23Z |
| publishDate | 2012-04-01 |
| publisher | Universidade Estadual de Londrina |
| record_format | Article |
| series | Semina: Ciências Exatas e Tecnológicas |
| spelling | doaj.art-8479caeb82aa4c14a7cfe792bf3d09e82022-12-22T01:07:19ZengUniversidade Estadual de LondrinaSemina: Ciências Exatas e Tecnológicas1676-54511679-03752012-04-0133195102Polypropylene and silica short fibers compositesMariana Gava SegatelliCristiane Aparecida da SilvaInez Valéria Pagotto YoshidaMaria do Carmo GonçalvesThe mechanical properties of composites strongly depend on the type of filler-polymeric matrix interface. An interface characterized by a strong bond between the filler and the matrix generally results in better mechanical properties. In this work, polypropylene, PP, was used as polymeric matrix and silica short fibers, SF, which are amorphous biogenic silica, were employed as filler. In order to promote a better filler-matrix interfacial adhesion, these fibers were previously modified with vinyltrimethoxysilane. The composites were prepared by extrusion and injection molding processes and their mechanical properties were evaluated according to tensile testing, ASTM D 268, by means a fractional factorial design (25-1). The studied factors included fiber content in the matrix, fiber surface modification, injection flow and testing rate. The composite cryogenic fractured surfaces were investigated by field emission scanning electron microscopy, FESEM. The fiber modification promoted a better fiber-matrix interfacial adhesion, resulting in optimized mechanical properties in relation to the others. In this way, the fiber modification was the most important factor on the mechanical performance of the composites.http://www.uel.br/revistas/uel/index.php/semexatas/article/view/8965/10383Silica short fibersPolypropyleneFractional factorial design |
| spellingShingle | Mariana Gava Segatelli Cristiane Aparecida da Silva Inez Valéria Pagotto Yoshida Maria do Carmo Gonçalves Polypropylene and silica short fibers composites Semina: Ciências Exatas e Tecnológicas Silica short fibers Polypropylene Fractional factorial design |
| title | Polypropylene and silica short fibers composites |
| title_full | Polypropylene and silica short fibers composites |
| title_fullStr | Polypropylene and silica short fibers composites |
| title_full_unstemmed | Polypropylene and silica short fibers composites |
| title_short | Polypropylene and silica short fibers composites |
| title_sort | polypropylene and silica short fibers composites |
| topic | Silica short fibers Polypropylene Fractional factorial design |
| url | http://www.uel.br/revistas/uel/index.php/semexatas/article/view/8965/10383 |
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