期刊
POLYMER
卷 96, 期 -, 页码 26-34出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.polymer.2016.05.004
关键词
Self-healing polymer; Fracture; Rheology; Stress relaxation; Time-temperature superposition
资金
- European Seventh Framework NMP Program, SHINE Project [309450-2]
This work presents a detailed study into the rheological properties and fracture healing behaviour of two poly(urea-urethane) polymers containing (i) hydrogen bonds and (ii) hydrogen bonds and disulphide linkages. The experimental procedure here presented using the temperature and time superposition allowed for the identification of the contribution of each reversible bond type to the network behaviour (rheology) and healing (fracture). During the experimental data analysis it was found that the same shift factors required to construct the rheological master curves from separate isothermal small-amplitude oscillatory shear (SAOS) measurements at different temperatures could also be applied to obtain a master curve for the fracture healing data as a function of healing time and temperature. This work shows therefore the apparent direct relationship between rheological response and macroscopic fracture healing. (C) 2016 Elsevier Ltd. All rights reserved.
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