Investigations on tensile creep of CNT- epoxy shape memory polymer nanocomposites

Revathi, A and Sendil, Murugan M and Sandhya, Rao and Chiranjeevi, MC and Kavitha, Rao V and Shylaja, Srihari and Dayananda, GN (2017) Investigations on tensile creep of CNT- epoxy shape memory polymer nanocomposites. International Journal of Nanotechnology, 14 (9-11). pp. 945-960. ISSN 1475-7435

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In this work, epoxy-based shape memory polymer nanocomposites (SMPnCs) were prepared using 0.5 wt% and 1 wt% multi walled carbon nanotubes (MWCNTs) pre-dispersed in epoxy resin. This was cured with triethylene tetraamine (TETA) curing agent. The glass transition temperatures (Tg) were determined using Advanced Rheometric Expansion System (ARES). The creep behaviour of the 0 wt% CNT SMPnC as well as the 0.5 wt% and 1 wt% MWCNT SMPnCs were studied through short term tensile creep test at different temperatures. Master curves of creep compliance were derived using a time-temperature superposition principle (TTSP) based on Williams-Landel-Ferry (WLF) equation. A Findley power-law model was used to predict the creep deformation behaviour of 0, 0.5 and 1 wt% CNT SMPnCs. Good correlations between experimental data and the predictive model were obtained for both SMPs particularly at lower temperature and above Tg.

Item Type: Article
Subjects: CHEMISTRY AND MATERIALS > Composite Materials
Depositing User: Mrs SK Pratibha
Date Deposited: 06 Aug 2018 08:24
Last Modified: 24 Jul 2019 16:39

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