Universität zu Köln

Pariy, Igor O., Ivanova, Anna A., Shvartsman, Vladimir V., Lupascu, Doru C., Sukhorukov, Gleb B., Ludwig, Tim, Bartasyte, Ausrine ORCID: 0000-0002-8862-2669, Mathur, Sanjay, Surmeneva, Maria A. and Surmenev, Roman A. (2019). Piezoelectric Response in Hybrid Micropillar Arrays of Poly(Vinylidene Fluoride) and Reduced Graphene Oxide. Polymers, 11 (6). BASEL: MDPI. ISSN 2073-4360

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Abstract

This study was dedicated to the investigation of poly(vinylidene fluoride) (PVDF) micropillar arrays obtained by soft lithography followed by phase inversion at a low temperature. Reduced graphene oxide (rGO) was incorporated into the PVDF as a nucleating filler. The piezoelectric properties of the PVDF-rGO composite micropillars were explored via piezo-response force microscopy (PFM). Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD) showed that alpha, beta, and gamma phases co-existed in all studied samples, with a predominance of the gamma phase. The piezoresponse force microscopy (PFM) data provided the local piezoelectric response of the PVDF micropillars, which exhibited a temperature-induced downward dipole orientation in the pristine PVDF micropillars. The addition of rGO into the PVDF matrix resulted in a change in the preferred polarization direction, and the piezo-response phase angle changed from -120 degrees to 20 degrees-40 degrees. The pristine PVDF and PVDF loaded with 0.1 wt % of rGO after low-temperature quenching were found to possess a piezoelectric response of 86 and 87 pm/V respectively, which are significantly higher than the |d(33)(eff)| in the case of imprinted PVDF 64 pm/V. Thus, the addition of rGO significantly affected the domain orientation (polarization) while quenching increased the piezoelectric response.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Pariy, Igor O. UNSPECIFIED UNSPECIFIED UNSPECIFIED Ivanova, Anna A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Shvartsman, Vladimir V. UNSPECIFIED UNSPECIFIED UNSPECIFIED Lupascu, Doru C. UNSPECIFIED UNSPECIFIED UNSPECIFIED Sukhorukov, Gleb B. UNSPECIFIED UNSPECIFIED UNSPECIFIED Ludwig, Tim UNSPECIFIED UNSPECIFIED UNSPECIFIED Bartasyte, Ausrine UNSPECIFIED orcid.org/0000-0002-8862-2669 UNSPECIFIED Mathur, Sanjay UNSPECIFIED UNSPECIFIED UNSPECIFIED Surmeneva, Maria A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Surmenev, Roman A. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-146051
DOI:	10.3390/polym11061065
Journal or Publication Title:	Polymers
Volume:	11
Number:	6
Date:	2019
Publisher:	MDPI
Place of Publication:	BASEL
ISSN:	2073-4360
Language:	English
Faculty:	Faculty of Mathematics and Natural Sciences
Divisions:	Faculty of Mathematics and Natural Sciences > Department of Chemistry > Institute of Inorganic Chemistry
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language BETA-PHASE; PVDF FILMS; ALPHA; TRANSFORMATION; REDUCTION Multiple languages Polymer Science Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/14605