Effects of dispersion techniques of carbon nanofibers on the thermo-physical properties of epoxy nanocomposites
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| Title: | Effects of dispersion techniques of carbon nanofibers on the thermo-physical properties of epoxy nanocomposites |
|---|---|
| Authors: | Prolongo, S.G. silvia.gonzalez@urjc.es, Burón, M.1, Gude, M.R.1, Chaos-Morán, R.1, Campo, M.1, Ureña, A.1 |
| Source: | Composites Science & Technology. Oct2008, Vol. 68 Issue 13, p2722-2730. 9p. |
| Subjects: | Dispersion (Chemistry), Spectrum analysis, Particles (Nuclear physics), Infrared spectroscopy |
| Abstract: | Abstract: The influence of the dispersion states of carbon nanofibers (CNFs) on the structure and thermo-physical properties of the epoxy nanocomposites has been investigated. Two main different methods for dispersion of nanoreinforcements into an epoxy matrix have been tested: (1) directly mixing the CNFs and the epoxy monomer and (2) previous addition of CNFs to a solvent to produce a stable suspension which later was mixed with the epoxy resin. For it, solvents of different nature were tested. Also, several dispersion techniques were evaluated, such as high shear mechanical stirring and sonication at high frequency. In order to improve the compatibility with epoxy matrix, CNFs were amino-functionalizated through the acid-thionyl chloride way. It was found that the experimental conditions applied for CNFs dispersion are critical to obtain homogeneous nanocomposite. It was probed that it is necessary to carry out several stages of CNFs dispersion, including the chemical modification and functionalization of CNFs, the dilution of non-cured epoxy/CNF mixture into a relative polar solvent and to combine different dispersing techniques (magnetic stirring, high shear mixing and sonication) for relative long periods of time at high temperature. In this way, homogeneous nanocomposites were manufactured with important increases of storage modulus. [Copyright &y& Elsevier] |
| Copyright of Composites Science & Technology is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 34534372 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Effects of dispersion techniques of carbon nanofibers on the thermo-physical properties of epoxy nanocomposites – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Prolongo%2C+S%2EG%2E%22">Prolongo, S.G.</searchLink><i> silvia.gonzalez@urjc.es</i><br /><searchLink fieldCode="AR" term="%22Burón%2C+M%2E%22">Burón, M.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Gude%2C+M%2ER%2E%22">Gude, M.R.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Chaos-Morán%2C+R%2E%22">Chaos-Morán, R.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Campo%2C+M%2E%22">Campo, M.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Ureña%2C+A%2E%22">Ureña, A.</searchLink><relatesTo>1</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Composites+Science+%26+Technology%22">Composites Science & Technology</searchLink>. Oct2008, Vol. 68 Issue 13, p2722-2730. 9p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Dispersion+%28Chemistry%29%22">Dispersion (Chemistry)</searchLink><br /><searchLink fieldCode="DE" term="%22Spectrum+analysis%22">Spectrum analysis</searchLink><br /><searchLink fieldCode="DE" term="%22Particles+%28Nuclear+physics%29%22">Particles (Nuclear physics)</searchLink><br /><searchLink fieldCode="DE" term="%22Infrared+spectroscopy%22">Infrared spectroscopy</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Abstract: The influence of the dispersion states of carbon nanofibers (CNFs) on the structure and thermo-physical properties of the epoxy nanocomposites has been investigated. Two main different methods for dispersion of nanoreinforcements into an epoxy matrix have been tested: (1) directly mixing the CNFs and the epoxy monomer and (2) previous addition of CNFs to a solvent to produce a stable suspension which later was mixed with the epoxy resin. For it, solvents of different nature were tested. Also, several dispersion techniques were evaluated, such as high shear mechanical stirring and sonication at high frequency. In order to improve the compatibility with epoxy matrix, CNFs were amino-functionalizated through the acid-thionyl chloride way. It was found that the experimental conditions applied for CNFs dispersion are critical to obtain homogeneous nanocomposite. It was probed that it is necessary to carry out several stages of CNFs dispersion, including the chemical modification and functionalization of CNFs, the dilution of non-cured epoxy/CNF mixture into a relative polar solvent and to combine different dispersing techniques (magnetic stirring, high shear mixing and sonication) for relative long periods of time at high temperature. In this way, homogeneous nanocomposites were manufactured with important increases of storage modulus. [Copyright &y& Elsevier] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Composites Science & Technology is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.compscitech.2008.05.015 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 9 StartPage: 2722 Subjects: – SubjectFull: Dispersion (Chemistry) Type: general – SubjectFull: Spectrum analysis Type: general – SubjectFull: Particles (Nuclear physics) Type: general – SubjectFull: Infrared spectroscopy Type: general Titles: – TitleFull: Effects of dispersion techniques of carbon nanofibers on the thermo-physical properties of epoxy nanocomposites Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Prolongo, S.G. – PersonEntity: Name: NameFull: Burón, M. – PersonEntity: Name: NameFull: Gude, M.R. – PersonEntity: Name: NameFull: Chaos-Morán, R. – PersonEntity: Name: NameFull: Campo, M. – PersonEntity: Name: NameFull: Ureña, A. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 10 Text: Oct2008 Type: published Y: 2008 Identifiers: – Type: issn-print Value: 02663538 Numbering: – Type: volume Value: 68 – Type: issue Value: 13 Titles: – TitleFull: Composites Science & Technology Type: main |
| ResultId | 1 |
