Universität zu Köln

Zviagin, Andrei S., Chernozem, Roman V., Surmeneva, Maria A., Pyeon, Myeongwhun, Frank, Michael, Ludwig, Tim, Tutacz, Peter, Ivanov, Yurii F., Mathur, Sanjay and Surmenev, Roman A. (2019). Enhanced piezoelectric response of hybrid biodegradable 3D poly(3-hydroxybutyrate) scaffolds coated with hydrothermally deposited ZnO for biomedical applications. Eur. Polym. J., 117. S. 272 - 280. OXFORD: PERGAMON-ELSEVIER SCIENCE LTD. ISSN 1873-1945

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Abstract

Fibrous scaffolds based on biodegradable piezoelectric poly(3-hydroxybutyrate) (PHB) polymers were fabricated via electrospinning. Hydrothermal deposition of zinc oxide (ZnO) on the surfaces of fibrous PHB scaffolds resulted in a homogeneous ZnO layer that grew conformally on the porous polymeric scaffold. X-ray photoelectron spectroscopy (XPS) and X-ray diffraction (XRD) results confirmed the formation of a hexagonal wurtzite crystal structure of ZnO on the PHB fibres. XRD patterns, TEM and EDS analysis revealed a bimodal morphology with rod-like nanostructures that grew preferentially along the c-axis as well as nanoparticles that grew randomly. The piezoelectric charge coefficient d(33) for pristine PHB scaffolds was 2.9 +/- 0.1 pC.N-1, whereas after ZnO deposition, it substantially increased to 13.7 +/- 1.6 pC.N-1. Moreover, the output surface electrical potential of PHB scaffolds after ZnO deposition also substantially increased from 0.58 +/- 0.02 to 0.88 +/- 0.04 V, showing enhanced electromechanical coupling in the piezoelectric nanocomposites. The output surface electric potential for ZnO-coated PHB scaffolds was stable within 1200 loading cycles. In addition, the ZnO rod-like nanostructured surface improved the wettability of PHB fibrous scaffolds, demonstrating synergy between the ceramic and polymeric phases in PHB/ZnO composites. Therefore, the hybrid biodegradable piezoelectric scaffolds reported in the present study are potentially useful for biomedical applications, where both improved piezoelectric response and surface wettability are required.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Zviagin, Andrei S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Chernozem, Roman V. UNSPECIFIED UNSPECIFIED UNSPECIFIED Surmeneva, Maria A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Pyeon, Myeongwhun UNSPECIFIED UNSPECIFIED UNSPECIFIED Frank, Michael UNSPECIFIED UNSPECIFIED UNSPECIFIED Ludwig, Tim UNSPECIFIED UNSPECIFIED UNSPECIFIED Tutacz, Peter UNSPECIFIED UNSPECIFIED UNSPECIFIED Ivanov, Yurii F. UNSPECIFIED UNSPECIFIED UNSPECIFIED Mathur, Sanjay UNSPECIFIED UNSPECIFIED UNSPECIFIED Surmenev, Roman A. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-134266
DOI:	10.1016/j.eurpolymj.2019.05.016
Journal or Publication Title:	Eur. Polym. J.
Volume:	117
Page Range:	S. 272 - 280
Date:	2019
Publisher:	PERGAMON-ELSEVIER SCIENCE LTD
Place of Publication:	OXFORD
ISSN:	1873-1945
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 DIFFERENT MORPHOLOGIES; PLASMA TREATMENT; CELL-ADHESION; NANOPARTICLES; POLYMERS; GROWTH; NANOSTRUCTURES; WETTABILITY; SURFACE; FILMS Multiple languages Polymer Science Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/13426