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Nucleating Effect of Carbon Nanoparticles and Their Influence on the Thermal and Chemical Stability of Polypropylene
Joint Authors
Ramos-de Valle , L. F.
Avalos-Belmontes, F.
Ramírez-Vargas, E.
Sánchez-Valdes, S.
Méndez-Nonel, J.
Zitzumbo-Guzmán, R.
Source
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-10-16
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
The effect of carbon nanofibers (CNFs) and carbon nanotubes (CNTs) on the thermal and chemical stability of polypropylene (PP) when subjected to oxidation in a strong acid medium was studied.
The effect of CNFs and CNTs on the crystalline morphology and the melting and crystallization temperatures was also studied.
The thermal stability increased markedly; the decomposition temperature, for example, increased from 293∘C for pure PP to 312 and 320∘C for PP with CNFs and CNTs, respectively.
The crystallization temperature increased perceptibly with the addition of CNTs or CNFs, from 107∘C for pure PP to 112 and 114∘C for PP with CNFs and CNTs, respectively.
The oxidative degradation with nitric acid produced a reduction in molecular weight; however, this negative effect was less pronounced in the PP compositions with carbon nanoparticles.
After 8 hours in nitric acid, this reduction was from 141,000 to 68,000 (for pure PP), to 75,000 (for PP-CNFs), and 79,500 (for PP-CNTs).
X-ray diffraction showed that the alpha type crystallinity remains, irrespective of the nucleating agent.
Finally, the intensity ratio between the (040) (at 16.7∘) and the (110) (at 13.9∘) reflections increased, which was taken as an indication of an increasing nucleating efficiency.
American Psychological Association (APA)
Avalos-Belmontes, F.& Ramos-de Valle , L. F.& Ramírez-Vargas, E.& Sánchez-Valdes, S.& Méndez-Nonel, J.& Zitzumbo-Guzmán, R.. 2012. Nucleating Effect of Carbon Nanoparticles and Their Influence on the Thermal and Chemical Stability of Polypropylene. Journal of Nanomaterials،Vol. 2012, no. 2012, pp.1-8.
https://search.emarefa.net/detail/BIM-1029207
Modern Language Association (MLA)
Avalos-Belmontes, F.…[et al.]. Nucleating Effect of Carbon Nanoparticles and Their Influence on the Thermal and Chemical Stability of Polypropylene. Journal of Nanomaterials No. 2012 (2012), pp.1-8.
https://search.emarefa.net/detail/BIM-1029207
American Medical Association (AMA)
Avalos-Belmontes, F.& Ramos-de Valle , L. F.& Ramírez-Vargas, E.& Sánchez-Valdes, S.& Méndez-Nonel, J.& Zitzumbo-Guzmán, R.. Nucleating Effect of Carbon Nanoparticles and Their Influence on the Thermal and Chemical Stability of Polypropylene. Journal of Nanomaterials. 2012. Vol. 2012, no. 2012, pp.1-8.
https://search.emarefa.net/detail/BIM-1029207
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1029207