Influence of preparation conditions on structural and dielectric properties of PVDF–MoS2 nanotubes composite films

被引:0
作者
Ana Varlec
Andreja Eršte
Vid Bobnar
Maja Remškar
机构
[1] Condensed Matter Physics Department,
[2] Jožef Stefan Institute,undefined
来源
Journal of Polymer Research | 2016年 / 23卷
关键词
PVDF; MoS; nanotubes; Composites; Dielectric response; Raman spectroscopy; FTIR-ATR;
D O I
暂无
中图分类号
学科分类号
摘要
Poly(vinylidene fluoride) composite films with MoS2 nanotubes were prepared from solutions using the doctor blade method and dried under various temperatures. While FTIR-ATR and Raman spectroscopy have revealed that composite films dried at room temperature are homogeneous and crystallize mainly in the γ-phase, a decrease in porosity upon addition of MoS2 has been observed using scanning electron microscopy. Dielectric investigations revealed (i) a decrease from ε’ ∼ 7 in pure polymer to ε’ ∼ 4 in composite with 1 wt% of MoS2, and (ii) a slight increase in ε’ and σ’ values upon further addition of MoS2. Films dried at 110 °C were heterogeneous and FTIR-ATR has shown an increase in α-phase content upon addition of 1 wt% of MoS2. In this case, high values of ε’ ∼ 10 that increased slightly upon increasing amount of MoS2 in the film have been measured. By showing a direct relation between structure and dielectric response, it is suggested that the dielectric properties of poly(vinylidene fluoride)–MoS2 nanotubes composites can be tailored by changing the preparation conditions.
引用
收藏
相关论文
共 85 条
[1]  
Lovinger AJ(1983)Ferroelectric polymers Science 220 1115-1121
[2]  
Lovinger AJ(1982)Annealing of poly (vinylidene fluoride) and formation of a fifth phase Macromolecules 15 40-44
[3]  
Martins P(2014)Electroactive phases of poly(vinylidene fluoride): determination, processing and applications Prog Polym Sci 39 683-706
[4]  
Lopes AC(1981)Conformational defects and associated molecular motions in crystalline poly(vinylidene fluoride) J Appl Phys 52 5934-141
[5]  
Lanceros-Mendez S(1986)The measurement of the shear piezoelectric coefficients of polyvinylidene fluoride Ferroelectrics 67 137-4500
[6]  
Lovinger AJ(2012)Pressure-induced changes in the dielectric response of polymer relaxors Appl Phys Lett 100 052904-3226
[7]  
Nix EL(1999)Effect of crystalline phase, orientation and temperature on the dielectric properties of poly (vinylidene fluoride)(PVDF) J Mater Sci 34 4489-507
[8]  
Ward IM(2013)A novel structure of polyvinylidene fluoride (PVDF) stabilized by MoS Soft Matter 9 8647-2949
[9]  
Hilczer B(1979) nanotubes J Appl Phys 50 4399-1689
[10]  
Szafrański M(2011)High-pressure crystallization of poly(vinylidene fluoride) IEEE Sensors J 11 3216-18082