Issue |
EPL
Volume 96, Number 2, October 2011
|
|
---|---|---|
Article Number | 27005 | |
Number of page(s) | 4 | |
Section | Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties | |
DOI | https://doi.org/10.1209/0295-5075/96/27005 | |
Published online | 03 October 2011 |
NMR study on mechanisms of ionic polymer-metal composites deformation with water content
1
State Key Laboratory of Mechanical Structure Strength and Vibration, Xi'an Jiaotong University Xi'an, 710049, PRC
2
School of Mechanical Engineering, Xi'an Jiaotong University - Xi'an, 710049, PRC
3
Niumag Corporation - Shanghai, 200333, PRC
Received:
14
June
2011
Accepted:
29
August
2011
Ionic polymer-metal composites (IPMCs) exhibit a large dynamic bending deformation under exterior electric field. The states and proportions of water within the IPMCs have great effect on the IPMCs deformation properties. This letter investigates the influence of the proportion changes of different types of water on the deformation, which may disclose the working mechanisms of the IPMCs. We give a deformation trend of IPMCs with the reduction of water content firstly. Then by the method of nuclear magnetic resonance, various water types (water bonded to sulfonates, loosely bound water and free water) of IPMCs and their proportions are investigated in the drying process which corresponds to their different deformation states. It is obtained that the deformation properties of IPMCs depend strongly on their water content and the excess free water is responsible for the relaxation deformation.
PACS: 77.65.-j – Piezoelectricity and electromechanical effects / 82.56.-b – Nuclear magnetic resonance / 61.25.hp – Polymer swelling, cross linking
© EPLA, 2011
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.