Bioinspired strategy for tuning thermal stability of PVA via hydrogen-bond crosslink
Data(s) |
01/10/2015
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Resumo |
Although many approaches have been employed to enhance thermal stability of PVA, developing a facile and effective strategy remains highly attractive. Herein, we demonstrate a highly effective approach to strikingly improve thermal stability of PVA by selecting the types of multiamines molecules to tune the hydrogen-bond crosslink density. Results show that only adding 0.5 wt% of 2,4,5,6-tetraaminopyrimidine can make the initial degradation temperature (T<inf>i</inf>) and maximum degradation temperature (T<inf>max</inf>) of PVA increase by ~55 °C and 98 °C due to the formation of 3D physically H-bond crosslinked network, resulting in superior thermal stability property to those of PVA nanocomposites. Moreover, thermal stability strongly depends on the H-bond crosslink density, and T<inf>i</inf> and T<inf>max</inf> basically obey the linear hydrogen-bond relations despite some deviations. This work opens up a novel biological methodology for creating thermally stable polymeric materials. |
Identificador | |
Idioma(s) |
eng |
Publicador |
Elsevier |
Relação |
http://dro.deakin.edu.au/eserv/DU:30078878/xu-bioinspiredstrategy-2015.pdf http://www.dx.doi.org/10.1016/j.compscitech.2015.08.006 |
Direitos |
2015, Elsevier |
Palavras-Chave | #Infrared (IR) spectroscopy #Polymers #Thermal properties |
Tipo |
Journal Article |