An Investigation on the Effect of Barium Titanate Nanoparticles on the Properties of Electrospun PVDF Fibers

Subject Areas : journal of New Materials

Neda Askarzadeh ¹ (Department of Materials Science and Engineering, School of Engineering, Shiraz University, Shiraz, Iran)
Zahra Sherafat ² (Department of Materials Science and Engineering, School of Engineering, Shiraz University, Shiraz, Iran)

Received: 2022-08-10 Accepted : 2022-12-14 Published : 2022-04-21

Keywords: Electrospinning, piezoelectric composite, Polyvinylidene fluoride, barium titanate nanoparticles,

Abstract :

Polyvinylidene fluoride (PVDF) is a semi-crystalline polymer that has received a great deal of interest. PVDF crystallizes in five different phases. The β phase is the most important PVDF phase with the highest piezoelectric properties. Therefore, increasing the β phase fraction in this polymer is crucial. Various methods can be used for increasing β phase fraction in PVDF, amongst which electrospinning and introducing certain nanoparticles are worth mentioning.
PVDF solution containing different amounts of barium titanate (BT) nanoparticles were prepared and electrospun. Finally, the obtained fibers were heat treated at 155°C for 2 h.
Morphology observations showed the formation of uniform and beadless nanocomposite fibers. In addition, increasing the amount of BT nanoparticles decreased the average fiber diameter. The EDS results showed that BT nanoparticles were homogeneously distributed in the composite fibers. XRD patterns showed that the electrospinning method can induce β-phase formation in PVDF. Calculating the β-phase fraction showed an increasing trend up to 4 wt.% BT content due to the effective interaction between BT nanoparticles and PVDF chains. The β phase content reached 94.43% in PVDF-4%BT sample. Beyond that, nanoparticles agglomeration and the increased viscosity of the polymer colloid hinder β-phase formation. The contact angle of PVDF fibers decreased by increasing the BT content, and in the presence of 6 wt.% BT, the lowest contact angle, 126.8°, was obtained. The results of piezoelectric test showed that by adding 4 wt.% barium titanate to PVDF, the piezoelectric charge output of PVDF fibers increased from 6.34 pC/N to 8.85 pC/N.

References:

[1]        F. Liu, N. A. Hashim, Y. Liu, M. R. M. Abed, and K. Li, “Progress in the production and modification of PVDF membranes,” J Memb Sci, vol. 375, no. 1–2, pp. 1–27, Jun. 2011.

[2]        B.-E. El Mohajir and N. Heymans, “Changes in structural and mechanical behaviour of PVDF with processing and thermomechanical treatments. 1. Change in structure,” Polymer (Guildf), vol. 42, no. 13, pp. 5661–5667, Jun. 2001.

[3]        K. Tashiro, H. Tadokoro, and M. Kobayashi, “Structure and piezoelectricity of poly (vinylidene fluoride),” Ferroelectrics, vol. 32, no. 1, pp. 167–175, Jan. 1981.

[4]        A. Salimi and A. A. Yousefi, “Conformational changes and phase transformation mechanisms in PVDF solution-cast films,” J Polym Sci B Polym Phys, vol. 42, no. 18, pp. 3487–3495, Sep. 2004.

[5]        V. F. Cardoso, D. M. Correia, C. Ribeiro, M. M. Fernandes, and S. Lanceros-Méndez, “Fluorinated Polymers as Smart Materials for Advanced Biomedical Applications,” Polymers 2018, Vol. 10, Page 161, vol. 10, no. 2, p. 161, Feb. 2018.

[6]        F. E. Ahmed, B. S. Lalia, and R. Hashaikeh, “A review on electrospinning for membrane fabrication: Challenges and applications,” Desalination, vol. 356. Elsevier, pp. 15–30, Jan. 15, 2015.

[7]        A. Zaszczynska, P. Sajkiewicz, and A. Gradys, “Piezoelectric Scaffolds as Smart Materials for Neural Tissue Engineering,” Polymers (Basel), vol. 12, no. 1, p. 161, Jan. 2020.

[8]        Z.-M. Dang et al., “Potential Bioelectroactive Bone Regeneration Polymer Nanocomposites with High Dielectric Permittivity,” Adv Eng Mater, vol. 11, no. 10, pp. B144–B147, Oct. 2009.

[9]        N. Ahmadi, M. Kharaziha, and S. Labbaf, “Core–shell fibrous membranes of PVDF–Ba 0.9 Ca 0.1 TiO 3 /PVA with osteogenic and piezoelectric properties for bone regeneration,” Biomedical Materials, vol. 15, no. 1, p. 015007, Dec. 2019.

[10]      M. Rasoolzadeh, Z. Sherafat, M. Vahedi, and E. Bagherzadeh, “Structure dependent piezoelectricity in electrospun PVDF-SiC nanoenergy harvesters,” J Alloys Compd, vol. 917, p. 165505, Oct. 2022.

[11]      H. Fong, I. Chun, and D. H. Reneker, “Beaded nanofibers formed during electrospinning,” Polymer (Guildf), vol. 40, no. 16, pp. 4585–4592, Jul. 1999.

[12]      G. Eda, “Effects of Solution Rheology on Electrospinning of Polystyrene by,” no. April, 2006.

[13]      J. S. Andrew and D. R. Clarke, “Enhanced Ferroelectric Phase Content of Polyvinylidene Difluoride Fibers with the Addition of Magnetic Nanoparticles,” Langmuir, vol. 24, no. 16, pp. 8435–8438, Aug. 2008.

[14]      N. Bhardwaj and S. C. Kundu, “Electrospinning: A fascinating fiber fabrication technique,” Biotechnol Adv, vol. 28, no. 3, pp. 325–347, May 2010.

[15]          م. محمودی, و. حقیقی, م. میرحاج, “ساخت و ارزیابی خواص سطحی و زیست‌تخریب‌پذیری داربست نانو فیبری پلی کاپرولاکتون /کراتین حاوی نانولوله‌کربن برای کاربرد در مهندسی بافت استخوان,” فصلنامه علمی - پژوهشی مواد نوین, دوره 11، شماره 39، اردیبهشت 1399، صفحه 15-30.

[16]      X. Cai, T. Lei, D. Sun, and L. Lin, “A critical analysis of the α, β and γ phases in poly(vinylidene fluoride) using FTIR,” RSC Adv, vol. 7, no. 25, pp. 15382–15389, Mar. 2017.

[17]      X.-X. Wei et al., “Advanced visible-light-driven photocatalyst BiOBr–TiO2–graphene composite with graphene as a nano-filler,” J Mater Chem A Mater, vol. 2, no. 13, p. 4667, Apr. 2014.

[18]      R. Asmatulu and A. Jabbarnia, “Synthesis and Characterization of PVdF/PVP-Based Electrospun Membranes as Separators for Supercapacitor Applications,” Journal of Material Science and Technology Research, vol. 2, no. 2, pp. 43–51, Jul. 2016.

[19]      Y. P. Su, L. N. Sim, H. G. L. Coster, and T. H. Chong, “Incorporation of barium titanate nanoparticles in piezoelectric PVDF membrane,” J Memb Sci, vol. 640, p. 119861, Dec. 2021.

[20]      R. Li, W. Wei, J. Hai, L. Gao, Z. Gao, and Y. Fan, “Preparation and electric-field response of novel tetragonal barium titanate,” J Alloys Compd, vol. 574, pp. 212–216, Oct. 2013.

[21]      X. Cai, T. Lei, D. Sun, and L. Lin, “A critical analysis of the α, β and γ phases in poly (vinylidene fluoride) using FTIR,” RSC Adv, vol. 7, no. 25, pp. 15382–15389, Mar. 2017.

[22]      A. D. Hussein, R. S. Sabry, O. Abdul Azeez Dakhil, and R. Bagherzadeh, “Effect of Adding BaTiO3 to PVDF as Nano Generator,” J Phys Conf Ser, vol. 1294, no. 2, p. 022012, Sep. 2019.

[23]      R. K. Singh, S. W. Lye, and J. Miao, “Holistic investigation of the electrospinning parameters for high percentage of β-phase in PVDF nanofibers,” Polymer (Guildf), vol. 214, p. 123366, Feb. 2021.

[24]        K. Shi, B. Sun, X. Huang, and P. Jiang, “Synergistic effect of graphene nanosheet and BaTiO3 nanoparticles on performance enhancement of electrospun PVDF nanofiber mat for flexible piezoelectric nanogenerators,” Nano Energy, vol. 52, pp. 153–162, Oct. 2018.