TY  - JOUR
A1  - Kussmaul, Björn
A1  - Risse, Sebastian
A1  - Wegener, Michael
A1  - Kofod, Guggi
A1  - Krüger, Hartmut
T1  - Matrix stiffness dependent electro-mechanical response of dipole grafted silicones
T2  - Smart materials and structures
N2  - The properties of dielectric elastomer actuators can be optimized by modifying the dielectric or mechanical properties of the dielectric elastomer. This paper presents the simultaneous control of both dielectric and mechanical properties, in a silicone elastomer network comprising cross-linker, chains and grafted molecular dipoles. Chains with two different molecular weights were each combined with varying amounts of grafted dipole. Chemical and physical characterization showed that networks with stoichiometric control of cross-linking density and permittivity were obtained, and that longer chain lengths resulted in higher electrical field response due to the reduction in cross-linking density and correspondingly in mechanical stiffness. Both actuation sensitivities were enhanced by 6.3 and 4.6 times for the short and long chain matrix material, respectively.
Y1  - 2012
UR  - https://publishup.uni-potsdam.de/frontdoor/index/index/docId/35845
SN  - 0964-1726
VL  - 21
IS  - 6
PB  - IOP Publ. Ltd.
CY  - Bristol
ER  -