PMID- 26795238
OWN - NLM
STAT- MEDLINE
DCOM- 20161108
LR  - 20161230
IS  - 1944-8252 (Electronic)
IS  - 1944-8244 (Linking)
VI  - 8
IP  - 4
DP  - 2016 Feb 3
TI  - Thermo-electromechanical Behavior of Piezoelectric Nanofibers.
PG  - 2540-51
LID - 10.1021/acsami.5b10073 [doi]
AB  - High performance piezoelectric devices based on arrays of PVDF-TrFE nanofibers 
      have been introduced in the literature for a variety of applications including 
      energy harvesting and sensing. In this Research Article, we utilize uniaxial 
      tensile test on arrays of nanofibers, microtensile, and nanoindentation and 
      piezo-response force microscopy (PFM) on individual nanofibers, as wells as DSC, 
      XRD, and FTIR spectroscopy to investigate the effect of annealing on 
      microstructure, mechanical, and piezoelectric properties of arrays and individual 
      electrospun nanofibers. For PVDF-TrFE nanofibers annealing in a temperature 
      between the Curie and melting temperature (in paraelectric phase) results in  approximately 70% 
      increase in crystallinity of the nanofibers. The findings of our multiscale 
      experiments reveal that this improvement in crystallinity results in  approximately 3-fold 
      increase in elastic modulus, and  approximately 55% improvement in piezoelectric constant. 
      Meanwhile, the ductility and tensile toughness of the nanofibers drop by  approximately 1 order 
      of magnitude. In addition, nanoscale cracks were observed on the surface of the 
      annealed nanofibers; however, they did not result in significant change in the 
      strength of the nanofibers. The results of this work may have important 
      implications for applications of PVDF-TrFE in energy harvesting, biomedical, and 
      sensor areas.
FAU - Baniasadi, Mahmoud
AU  - Baniasadi M
FAU - Xu, Zhe
AU  - Xu Z
FAU - Hong, Seokjin
AU  - Hong S
AD  - Department of Aerospace Engineering, Texas A&M University , 3141 TAMU, College 
      Station, Texas 77843-3141, United States.
FAU - Naraghi, Mohammad
AU  - Naraghi M
AD  - Department of Aerospace Engineering, Texas A&M University , 3141 TAMU, College 
      Station, Texas 77843-3141, United States.
FAU - Minary-Jolandan, Majid
AU  - Minary-Jolandan M
LA  - eng
PT  - Journal Article
PT  - Research Support, U.S. Gov't, Non-P.H.S.
DEP - 20160121
PL  - United States
TA  - ACS Appl Mater Interfaces
JT  - ACS applied materials & interfaces
JID - 101504991
SB  - IM
MH  - Calorimetry, Differential Scanning
MH  - Elastic Modulus
MH  - *Electricity
MH  - *Mechanical Phenomena
MH  - Nanofibers/*chemistry/ultrastructure
MH  - Spectroscopy, Fourier Transform Infrared
MH  - *Temperature
MH  - Tensile Strength
MH  - X-Ray Diffraction
OTO - NOTNLM
OT  - PVDF-TrFE
OT  - annealing
OT  - crystallization
OT  - electrospinning
OT  - electrospun nanofiber
OT  - mechanical properties
OT  - multifunctional polymer
OT  - piezoelectric properties
EDAT- 2016/01/23 06:00
MHDA- 2016/11/09 06:00
CRDT- 2016/01/23 06:00
PHST- 2016/01/23 06:00 [entrez]
PHST- 2016/01/23 06:00 [pubmed]
PHST- 2016/11/09 06:00 [medline]
AID - 10.1021/acsami.5b10073 [doi]
PST - ppublish
SO  - ACS Appl Mater Interfaces. 2016 Feb 3;8(4):2540-51. doi: 10.1021/acsami.5b10073. 
      Epub 2016 Jan 21.