Bioinspired strategy for tuning thermal stability of PVA via hydrogen-bond crosslink

Song, Pingan and Xu, Zhiguang and Lu, Yuan and Guo, Qipeng (2015) Bioinspired strategy for tuning thermal stability of PVA via hydrogen-bond crosslink. Composites Science and Technology, 118. pp. 16-22. ISSN 0266-3538

Abstract

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 (Ti) and maximum degradation temperature (Tmax) 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 Ti and Tmax basically obey the linear hydrogen-bond relations despite some deviations. This work opens up a novel biological methodology for creating thermally stable polymeric materials.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Files associated with this item cannot be displayed due to copyright restrictions.
Faculty / Department / School: No Faculty
Date Deposited: 13 Jul 2017 00:17
Last Modified: 13 Jul 2017 00:17
Uncontrolled Keywords: Polymers; Thermal properties; Infrared (IR) spectroscopy
Fields of Research : 09 Engineering > 0912 Materials Engineering > 091209 Polymers and Plastics
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970109 Expanding Knowledge in Engineering
Identification Number or DOI: 10.1016/j.compscitech.2015.08.006
URI: http://eprints.usq.edu.au/id/eprint/32725

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