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Abstrakt
Nonisothermal calorimetric and isothermal rheokinetic analyses were used to study cure kinetics of epoxy/anhydride systems containing very low concentration of pristine and amine-functionalized multiwalled carbon nanotubes (MWCNTs). Isoconversional methods were applied in calorimetric modeling of cure kinetics. Eα vs. α dependency and autocatalytic nature of curing were identified for both types of nanocomposites by isoconversional models. Fall in Eα value from 90 to 82.5 kJ mol−1 thanks to amine functionalization (with Eα of blank epoxy/anhydride of 80.3 kJ mol−1) was indicative of high potential of nanocomposites to cure at low concentration of functionalized MWCNTs (0.1 g with respect to 100 g of resin). Times of gelation and vitrification of epoxy were measured using storage and loss modulus data provided by isothermal rheokinetic analysis, showing a drop upon attachment of amine groups to MWCNTs. In complete agreement with nonisothermal calorimetric studies, variation of storage and loss modulus of nanocomposites confirmed hindered/accelerated cure devoted to pristine/amine-functionalized MWCNTs.
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Autorzy (6)
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Mohammad Saeb
- Institute for Color Science and Technology, Tehran, Iran Department of Resin and Additives
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Hadi Rastin
- University of Tehran, Tehran, Iran School of Chemical Engineering, College of Engineering
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Milad Nonahal
- University of Tehran, Tehran, Iran School of Chemical Engineering, College of Engineering
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Mehdi Ghaffari
- Golestan University, Gorgan, Golestan, Iran Department of Polymer
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Ali Jannesari
- Institute for Color Science and Technology, Tehran, Iran Department of Resin and Additives
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Informacje szczegółowe
- Kategoria:
- Publikacja w czasopiśmie
- Typ:
- artykuł w czasopiśmie wyróżnionym w JCR
- Opublikowano w:
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JOURNAL OF APPLIED POLYMER SCIENCE
nr 134,
wydanie 35,
strony 1 - 10,
ISSN: 0021-8995 - Język:
- angielski
- Rok wydania:
- 2017
- Opis bibliograficzny:
- Saeb M., Rastin H., Nonahal M., Ghaffari M., Jannesari A., Formela K.: Cure kinetics of epoxy/MWCNTs nanocomposites: Nonisothermal calorimetric and rheokinetic techniques// JOURNAL OF APPLIED POLYMER SCIENCE. -Vol. 134, iss. 35 (2017), s.1-10
- DOI:
- Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.1002/app.45221
- Weryfikacja:
- Politechnika Gdańska
wyświetlono 133 razy
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