Dielectric and electromechanical studies of plasticized poly(vinyl chloride) fabricated from plastisol

Ali, Mohammad; Ueki, Takamitsu; Hirai, Toshihiro; Sato, Takaaki; Satô, Tamotsu

doi:10.1002/pi.4343

Cited by 20 publications

(6 citation statements)

References 33 publications

(31 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Below the frequency range measured here (<10 Hz), it has been reported that the conductivity of PVC gels shows a steep decrease related to the increasing charge buildup and EP at the gel-electrode interface, as is common in systems with mobile charges, only the start of this process can be seen here in the conductivity spectra of the gels at lower frequencies [39].…”

Section: Conductivity Spectramentioning

confidence: 45%

A study of electroactive polyvinyl chloride (PVC) gel actuators through the use of the electric modulus formalism and cyclic linear voltage sweeps

Frank

Al-Rubaiai

Tan

2022

Smart Mater. Struct.

View full text Add to dashboard Cite

The conductivity and dielectric properties are integral to the function of polyvinyl chloride (PVC) gel actuators. The frequency-dependent properties of PVC gel actuators are investigated here in terms of their impedance, permittivity, and for the first time, electric modulus. The data shows that PVC gels’ conductive properties are just as, if not more, important as their dielectric properties in electromechanical transduction applications. The electrode polarization and its impact on the impedance and dielectric spectra of PVC gels, as well as the developed asymmetric space charge at the anode, are discussed. The electric modulus and tan δ spectra are used for the fitting of Cole-Cole and Debye relaxation models for gels of varying plasticizer content. The electrostatic adhesive force for PVC gels of varying plasticizer is also measured, indicating large electrostatic adhesion (>2 N/cm2). A cyclic linear voltage sweep is used to clarify the dynamics of space charge within the gels. The peak current (associated with space charge development) is seen to be concurrent with the onset of mechanical deformation, showing the asymmetric charge as the origin of electromechanical transduction. Additionally, the maximum charge transferred (as measured by the integration of current over time) before space charge development is found to correlate with the electrostatic adhesive force measured for the gels, pointing to a new method of characterizing PVC gels for actuation.

show abstract

Section: Conductivity Spectramentioning

confidence: 45%

A study of electroactive polyvinyl chloride (PVC) gel actuators through the use of the electric modulus formalism and cyclic linear voltage sweeps

Frank

Al-Rubaiai

Tan

2022

Smart Mater. Struct.

View full text Add to dashboard Cite

show abstract

“…This hardness variation is mainly given by the percentage and type of plasticizer incorporated. [2][3][4] Plasticizers are organic compounds used to improve processability and increase the polymer flexibility of PVC by forming of dipole-dipole interactions with the polymer chains. 5 In addition, the high density of the ends of the plasticizer chains introduces additional free volume into the PVC matrix which alters properties such as viscosity, softening temperature, glass transition temperature, and modulus of elasticity.…”

Section: Introductionmentioning

confidence: 99%

Chemical, thermal and mechanical evaluation of poly(vinyl chloride) plastisol with different plasticizers

Perito

Guerra

Giovanela

et al. 2022

Journal of Elastomers & Plastics

View full text Add to dashboard Cite

The most widely used plasticized polymer is poly(vinyl chloride) (PVC) due to its excellent plasticizer compatibility characteristics. Traditionally, PVC plasticizers belong to the phthalate family; however, they have harmful effects on human health and the environment. In this work, we evaluated the effect of six types of plasticizers (dioctyl phthalate, dioctyl adipate, Lestarflex (a polymeric polyester plasticizer), polycaprolactone, polyester polyol, and 1,2,3-propanetriol triacetate) on the properties of PVC plastisol used in manufacturing shoes and toys. The mechanical properties (hardness, tensile strength, tear strength, and elongation at break) were evaluated before and after accelerated aging tests (in an ultraviolet oven and at 50°C). A thermal study was also carried out using differential scanning calorimetry and thermogravimetric analysis, while possible structural changes during deformation were investigated using the small-angle X-ray scattering technique. In general, the results have shown that in the plasticization and stabilization of PVC, the plasticizer dioctyl phthalate can be replaced by dioctyl adipate or Lestarflex without relevant changes in the final properties of the material, even after accelerated aging.

show abstract

“…In this communication, we demonstrate a large deformable and reconfigurable smart varifocal lens with solventfree/green PVC (gPVC) gel. In order to find optimal gel for the varifocal lens with large deformation, we fabricated the gPVC gel via thermal mixing of PVC powder with ATBC, an environmentally benign plasticizer in various stoichiometric quantities [35][36][37]. We investigated the leakage current, dielectric constant, dielectric loss, dielectric break down voltage, and mechanical properties of the gPVC gels to select the optimal gel for large deformable varifocal lens.…”

Section: Introductionmentioning

confidence: 99%

Development of solvent-free green PVC gel based varifocal micro-lens

Shin¹,

Shimoga²,

Park³

et al. 2020

Smart Mater. Struct.

View full text Add to dashboard Cite

Environmental issues are being addressed more intensely in today's and future society. Concerning to this, the term 'solvent-free' conjures up a wide variety of innovations amongst the scientific community. Thus, it is necessary to develop environmentally benign green approaches in design engineering. In this communication, we reported the fabrication of solvent-free green polyvinyl chloride (gPVC) gel based electroactive varifocal micro-lens, which can dynamically tune its focal length under the applied input voltage. To develop gPVC gels, PVC powder was thermally treated by mixing stoichiometric quantity of an eco-friendly green plasticizer, acetyl tributyl citrate (ATBC). To obtain better control over the tunable optical properties, various gPVC gels were characterized and optimized gel was investigated. Consequently, gPVC gel with ATBC to PVC (15:1) ratio have showed an outstanding performance. Under the electrical stimulation, the focal length of the proposed lens has been demonstrated in a controlled manner. The results revealed that, the proposed varifocal micro-lens could change its focal length ~27.5 mm and will be a valuable asset for the future consumer electronic equipment.

show abstract

Dielectric and electromechanical studies of plasticized poly(vinyl chloride) fabricated from plastisol

Cited by 20 publications

References 33 publications

A study of electroactive polyvinyl chloride (PVC) gel actuators through the use of the electric modulus formalism and cyclic linear voltage sweeps

A study of electroactive polyvinyl chloride (PVC) gel actuators through the use of the electric modulus formalism and cyclic linear voltage sweeps

Chemical, thermal and mechanical evaluation of poly(vinyl chloride) plastisol with different plasticizers

Development of solvent-free green PVC gel based varifocal micro-lens

Contact Info

Product

Resources

About