Characterization and non-isothermal crystallization behavior of biodegradable poly(ethylene sebacate)/SiO_2 nanocomposites
- Creators
- Mohsen-Nia, M.
- Memarzadeh, M. R.
Abstract
Poly(ethylene sebacate) (PESeb) and PESeb/silica nanocomposites (PESeb/SiO_2) were prepared by in situ polymerization from the direct esterification of ethylene glycol with sebacic acid in the presence of proper amounts of silica nanoparticles. The non-isothermal crystallization behavior of PESeb/SiO_2 nanocomposites has been studied using different theoretical equations such as Avrami, Ozawa and combined Avrami and Ozawa equations. It is found that the addition of nanoparticles of SiO_2 influenced the mechanism of nucleation and the growth of PESeb crystallites. Also, the nanocomposites show a higher Avrami value than the neat PESeb, implying a more complex crystallization configuration. Moreover, the combined Avrami and Ozawa equation can successfully describe the crystallization model under the non-isothermal crystallization. The crystallization activation energies, E_a, calculated from ''Kissinger's equation'' have shown that the synthesized PESeb/SiO_2 nanocomposites have lower energy than the neat PESeb, reflecting the much lower energy barrier for the rapid heterogeneous nucleation.
Additional Information
© 2013 Springer-Verlag Berlin Heidelberg. Received: 9 January 2013; Accepted: 22 April 2013; Published online: 4 June 2013.Additional details
- Eprint ID
- 41297
- DOI
- 10.1007/s00289-013-0967-3
- Resolver ID
- CaltechAUTHORS:20130912-134714921
- Created
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2013-09-12Created from EPrint's datestamp field
- Updated
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2021-11-10Created from EPrint's last_modified field