Abstract
Peroxide-vulcanised NBR-PAni. DBSA blends with useful electrical conductivities (up to 10−1 S. cm−1) were prepared and their electrostrictive behaviours under certain levels of applied electric field were also successfully assessed. A reasonable high level of compatibility between NBR and PAni. DBSA was observed from both FT-IR spectroscopy and TEM microscopy studies. As found from both electrostrictive strain (Sz) tests, NBR-PAni. DBSA blends with 10.0–30.0 wt% of PAni.DBSA content possessed the best electrostrictive response (Sz up to 11.8%) with applied electrical field strengths up to 50 V/μm. Besides this, blends consisting of very low and very high PAni.DBSA contents (i.e. ≤ 5. 0 wt % and ≥ 40. 0 wt %) possessed poorer electrostrictive responses under the same level of applied electrical field due to their lower dielectrical properties and higher phase separation problem between the two major constituent polymers.
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