Thin polymer films

White, Mark E.

doi:10.1016/0040-6090(73)90095-3

Cited by 37 publications

(14 citation statements)

References 43 publications

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“…For the composite films containing 3.0% of Dy 2 O 3 , more conductivity is observed and in fact, at that composition, the film has low activation energy and crystallinity. Further, the ionic transference numbers (t ion ) of the films are near to unity, indicating their suitability as a polymer electrolyte for solid-state electrochemical cells [25][26][27].…”

Section: Impedance Analysismentioning

confidence: 93%

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Preparation and Characterization of Nano‐Dy₂O₃‐Doped PVA + Na₃C₆H₅O₇ Polymer Electrolyte Films for Battery Applications

Babu

Ravindhranath

Kumar

2018

Advances in Materials Science and Engineering

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Composite polymer electrolyte films containing various concentrations of nano-Dy 2 O 3 (1.0 to 4.0%) in PVA + sodium citrate (90 : 10) are synthesized adopting solution cast method and are characterized using FTIR, XRD, SEM, and DSC techniques. e investigations indicate that all components are homogenously dispersed. Films containing 3% of nano-Dy 2 O 3 are more homogenous and less crystalline, and the same is supported by DSC studies indicating the friendly nature to ionic conductivity. Transference number studies reveal that the major charge carriers are ions. With the increase in % of nano-Dy 2 O 3 , the conductivity increases and reaches maximum in 3% film with a value of 1.06 × 10 −4 S/cm (at 303 K). Further, the conductivity of the film increases with raise in temperature due to the hopping of interchain and intrachain ion movements and fall in microscopic viscosity at the matrix interface of the film. Electrochemical cells are fabricated using these films with the configuration "anode (Mg + MgSO4)/[PVA (90%) + Na 3 C 6 H 5 O 7 (10%) + (1-4% nano-Dy 2 O 3 )]/cathode (I 2 + C + electrolyte)," and various discharge characteristics are evaluated. With 3% nano-Dy 2 O 3 film, the maximum discharge time of 118 hrs with open-circuit voltage of 2.68 V, power density of 0.91 W/kg, and energy density of 107.5 Wh/kg are observed. ese findings reflect the successful adoption of the developed polymer electrolyte films in electrochemical cells.

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Section: Impedance Analysismentioning

confidence: 93%

“…ese particles were used in the preset investigation. e films were casted using solution cast technique [25]. Different proportions of PVA, Na 3 C 6 H 5 O 7 , and nano-Dy 2 O 3 as detailed in Tables 1 and 2 were added to triple distilled water and stirred for 48 hours to get a homogenous solution.…”

Section: Methodsmentioning

confidence: 99%

Preparation and Characterization of Nano‐Dy₂O₃‐Doped PVA + Na₃C₆H₅O₇ Polymer Electrolyte Films for Battery Applications

Babu

Ravindhranath

Kumar

2018

Advances in Materials Science and Engineering

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“…The films were casted using solution casting technique [18]. Different proportions of PVA, Na 3 C 6 H 5 O 7 , and nano-Pr 2 O 3 as detailed in Tables 1 and 2 were added to triple distilled water and stirred for 48 hours to get a homogeneous solution.…”

Section: Methodsmentioning

confidence: 99%

Nano-Pr₂O₃ Doped PVA + Na₃C₆H₅O₇ Polymer Electrolyte Films for Electrochemical Cell Applications

Babu

Ravindhranath

Kumar

2018

International Journal of Polymer Science

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Varying concentrations of nano-Pr2O3 doped in “PVA + Sodium Citrate (90 : 10)” polyelectrolyte films are synthesized using solution cast technique and the films are characterized adopting FTIR, XRD, SEM, and DSC methods. The film with 3.0% of nano-Pr2O3 content is more homogenous and possesses more amorphous region that facilitate the deeper penetration of nanoparticles into the film causing more interactions between the functional groups of the polymeric film and nano-Pr2O3 particles and thereby turning the film more friendlily to the proton conductivity. The conductivity is maximum of 7 × 10−4 S/cm at room temperature for 3.0% nano-Pr2O3 film and at that composition, the activation energy and crystallinity are low. With increase in temperature, the conductivity is increasing and it is attributed to the hopping of interchain and intrachain ion movements and furthermore decrease in microscopic viscosity of the films. The major charge carriers are ions and not electrons. These films are incorporated successfully as polyelectrolytes in electrochemical cells which are evaluated for their discharge characteristics. It is found that the discharge time is maximum of 140 hrs with open circuit voltage of 1.78 V for film containing 3% of nano-Pr2O3 and this reflects its adoptability in the solid-state battery applications.

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“…Nonetheless, the transfer of kinetic energy from the particles to the target molecules can result in chemical degradation by random polymer chain cleavage . This imposes a big constraint to morphological control and characterization of polymer thin film properties . So far, the employment of sputtering has frequently been used to acquire thin film coatings of fluoropolymers, such as poly(tetrafluoroethylene) (PTFE), for enhancing water‐repellent or gas separation properties where polymer degradation can be tolerated.…”

Section: Pvd Techniquesmentioning

confidence: 99%

Exploiting physical vapor deposition for morphological control in semi‐crystalline polymer films

Wang

Jeong

Chowdhury

et al. 2018

Polymer Crystallization

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Research in semi‐crystalline polymer thin films has seen significant growth due to their fascinating thermal, mechanical, and electronic properties. In all applications, acquiring precise control over the film morphology atop various substrates or in the free‐standing film geometry is key to advancing product performance. This article reviews the crystallization of polymer thin films processed via physical vapor deposition (PVD). Classical PVD techniques are briefly reviewed, highlighting their working principles as well as successes and challenges to achieving morphological control of polymer films. Subsequently, the recent development of a unique PVD technique termed Matrix Assisted Pulsed Laser Evaporation (MAPLE) is highlighted. The non‐destructive technology overcomes the major drawback of polymer degradation by classical PVD. Recent advances highlighting how MAPLE can be exploited to control polymer film morphology in ways not achievable by other methods are presented. Challenges and future scope of PVD for polymer film deposition concludes the review.

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Thin polymer films

Cited by 37 publications

References 43 publications

Preparation and Characterization of Nano‐Dy₂O₃‐Doped PVA + Na₃C₆H₅O₇ Polymer Electrolyte Films for Battery Applications

Preparation and Characterization of Nano‐Dy₂O₃‐Doped PVA + Na₃C₆H₅O₇ Polymer Electrolyte Films for Battery Applications

Nano-Pr₂O₃ Doped PVA + Na₃C₆H₅O₇ Polymer Electrolyte Films for Electrochemical Cell Applications

Exploiting physical vapor deposition for morphological control in semi‐crystalline polymer films

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Thin polymer films

Cited by 37 publications

References 43 publications

Preparation and Characterization of Nano‐Dy2O3‐Doped PVA + Na3C6H5O7 Polymer Electrolyte Films for Battery Applications

Preparation and Characterization of Nano‐Dy2O3‐Doped PVA + Na3C6H5O7 Polymer Electrolyte Films for Battery Applications

Nano-Pr2O3 Doped PVA + Na3C6H5O7 Polymer Electrolyte Films for Electrochemical Cell Applications

Exploiting physical vapor deposition for morphological control in semi‐crystalline polymer films

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Preparation and Characterization of Nano‐Dy₂O₃‐Doped PVA + Na₃C₆H₅O₇ Polymer Electrolyte Films for Battery Applications

Preparation and Characterization of Nano‐Dy₂O₃‐Doped PVA + Na₃C₆H₅O₇ Polymer Electrolyte Films for Battery Applications

Nano-Pr₂O₃ Doped PVA + Na₃C₆H₅O₇ Polymer Electrolyte Films for Electrochemical Cell Applications