Effect of roll hot press temperature on crystallite size of PVDF film

Hartono, Ambran; Djamal, Mitra; Satira, Suparno; Bahar, Herman; Ramli, Ramli; Sanjaya, Edi

doi:10.1063/1.4868785

Cited by 5 publications

(6 citation statements)

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“…From second experiment for fabrication temperature is 135˚C, we found that these three reflections have indi- [15].…”

Section: Resultsmentioning

confidence: 99%

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Effect of Mechanical Treatment Temperature on Electrical Properties and Crystallite Size of PVDF Film

Hartono¹,

Satira²,

Djamal³

et al. 2013

AMPC

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Fabrication of PVDF films has been making using Hot Roll Press. Preparation of samples carried out for nine different temperatures. This condition is carried out to see the effect of temperature fabrication on electrical properties and crystallite size of PVDF films. The electrical properties like as surface resistivity are discussion focus in this paper. Surface resistivity properties of PVDF can be improved by mechanical treatment on the varying film thickness and the temperature. To obtain the diffraction pattern of sample characterization is performed using X-Ray Diffraction. Crystallite size of PVDF films calculate from broadening pattern of X-Ray Diffraction. Furthermore, from the diffraction pattern calculated β fraction and crystallite size, for calculation to determine the crystallite size of the sample by using the Scherrer equation. Has been obtained an increase piezoelectric properties of PVDF films that characterized by increasing β fraction. Have been obtained β fraction increased from 25.4% up to 44% for temperatures of 130˚C up to 170˚C, respectively. Resistivity value has been obtained at temperature 130˚C up to 170˚C, decreased from 1.23 × 10 4 Ωm up to 0.21 × 10 4 Ωm respectively. From the experimental results and the calculation of crystallite sizes obtained for the samples with temperature 130˚C up to 170˚C respectively are increased from 7.2 nm up to 20.54 nm. These results indicate that mechanical treatment caused increase β fraction and decrease surface resistivity. Increasing temperatures will also increase the size of the crystallite of the sample. This happens because with the increasing temperature causes the higher the degree of crystallization of PVDF film sample is formed, so that the crystallite size also increases.

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“…From second experiment for fabrication temperature is 135˚C, we found that these three reflections have indi- [15].…”

Section: Resultsmentioning

confidence: 99%

“…In our research conducted by making a thin layer of material PVDF polymer with Roll Hot Press for several different temperatures. Having obtained samples were then carried out characterization using XRD to analyze the influence of different temperatures on the manufacture of crystallite size of PVDF films [15].…”

Section: Introductionmentioning

confidence: 99%

Effect of Mechanical Treatment Temperature on Electrical Properties and Crystallite Size of PVDF Film

Hartono¹,

Satira²,

Djamal³

et al. 2013

AMPC

Self Cite

View full text Add to dashboard Cite

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“…Especially, the spectra of all composite films consistently showed an overlap of α‐phase and β‐phase as a broad peak at 2θ = 20.6°. In the FT‐IR spectra shown in Figure b, the corresponding IR absorption band characteristics of α−phase are 615, 765, 795, and 975 cm −1 , whereas for β‐phase peaks in IR spectra are located at 840, 1230, 1400 cm −1 . As the CNT concentration increased, intensities of peaks for the α‐phase PVDF decreased and those for the β−phase PVDF increased from the XRD and FT‐IR results.…”

Section: Resultsmentioning

confidence: 90%

“…XRD patterns and FT‐IT spectra were measured from the CNT/PVDF composite films with different CNT concentration of 0.015 to 0.075 wt% to investigate the crystal structure and structural conformation of the PVDF, respectively, and the results were showed in Figure . In the XRD patterns shown in Figure a, the peaks at 2θ values of 17.8°, 18.4°, 20°, and 26.5° can be assigned to the (100), (020), (110), and (021) reflections of the α‐phase of PVDF, whereas, peak at 2θ values of 20.6° can be assigned to the (110)/(200) reflections of β‐phase PVDF . Especially, the spectra of all composite films consistently showed an overlap of α‐phase and β‐phase as a broad peak at 2θ = 20.6°.…”

Section: Resultsmentioning

confidence: 94%

Generating Power Enhancement of Flexible PVDF Generator by Incorporation of CNTs and Surface Treatment of PEDOT:PSS Electrodes

Lee

Lim

2018

Macro Materials & Eng

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Two approaches are proposed for enhancing the generating power of polyvinylidene fluoride (PVDF) flexible generator by incorporating carbon nanotubes (CNTs) and ethylene glycol (EG) treatment of the poly(3,4‐ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) electrodes. By incorporating CNTs into the PVDF polymer, higher portion of β‐phase PVDF can be obtained, which shows higher piezoelectricity resulting in higher electric charge generating performance. Higher conductivity is also obtained by surface treatment of the PEDOT:PSS electrodes using EG solvent due to the removal of excess PSS in the electrodes. Highly conductive electrode makes effective mobility of charges generated from the CNT/PVDF film, resulting in higher generating performance. Consequently, higher generating performance can be achieved by collaborating the above two approaches.

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“…The XRD results of the PVDF composite membranes are presented in Figure (b). Apparently, all of the samples showed the typical crystal planes (100), (021), (220), (020), and (111); this indicated α‐type (2θ = 17.5 and 26.7°), β‐type (2θ = 41.1°), and γ‐type (2θ = 20.7 and 22.8°) crystals . The peak intensity just mentioned decreased gradually as the RGO–Bi 2 WO 6 concentration increased.…”

Section: Resultsmentioning

confidence: 99%

Evaluation of the antifouling and photocatalytic properties of novel poly(vinylidene fluoride) membranes with a reduced graphene oxide–Bi₂WO₆ active layer

Zhu

2017

J of Applied Polymer Sci

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Immobilization of reduced graphene oxide (RGO)-Bi 2 WO 6 is an ideal method for obtaining antifouling membranes for membrane distillation (MD) processes. Poly(vinylidene fluoride) membranes modified with RGO-Bi 2 WO 6 were successfully obtained with a double-layer coating method through non-solvent-induced phase separation. The water contact angle was improved by about 308 by RGO-Bi 2 WO 6 ; this indicated that the surface modification obviously increased the membrane hydrophobicity. The high desalination rate proved that all of the prepared membranes were appropriate for the MD process. The RGO-Bi 2 WO 6 -modified membranes achieve 26.26%-59.95% removal rates in 10 mg/L aqueous ciprofloxacin under visible light for 7.5 h. It was possible to erase strongly bound foulants and recover the prepared membrane's permeation flux by 3 h of visible-light irradiation. The RGO-Bi 2 WO 6 -modified membrane with a high hydrophobicity, fouling mitigation, and photocatalytic capability presents huge potential for the treatment of high-salt antibiotic wastewater use in the MD process.

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Effect of roll hot press temperature on crystallite size of PVDF film

Cited by 5 publications

References 0 publications

Effect of Mechanical Treatment Temperature on Electrical Properties and Crystallite Size of PVDF Film

Effect of Mechanical Treatment Temperature on Electrical Properties and Crystallite Size of PVDF Film

Generating Power Enhancement of Flexible PVDF Generator by Incorporation of CNTs and Surface Treatment of PEDOT:PSS Electrodes

Evaluation of the antifouling and photocatalytic properties of novel poly(vinylidene fluoride) membranes with a reduced graphene oxide–Bi₂WO₆ active layer

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Effect of roll hot press temperature on crystallite size of PVDF film

Cited by 5 publications

References 0 publications

Effect of Mechanical Treatment Temperature on Electrical Properties and Crystallite Size of PVDF Film

Effect of Mechanical Treatment Temperature on Electrical Properties and Crystallite Size of PVDF Film

Generating Power Enhancement of Flexible PVDF Generator by Incorporation of CNTs and Surface Treatment of PEDOT:PSS Electrodes

Evaluation of the antifouling and photocatalytic properties of novel poly(vinylidene fluoride) membranes with a reduced graphene oxide–Bi2WO6 active layer

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Product

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Evaluation of the antifouling and photocatalytic properties of novel poly(vinylidene fluoride) membranes with a reduced graphene oxide–Bi₂WO₆ active layer