SIO&lt;sub&gt;2&lt;/sub&gt; Filler as Interface Modifier in PMMA/ENR 50 Electrolytes

Fadli, Mohamad Zamri Sharil; Famiza, A. L.

doi:10.4028/www.scientific.net/amr.812.120

Cited by 7 publications

(5 citation statements)

References 9 publications

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“…PMMA and ENR 50 were previously blended for 24 hours under continuous stirring. The amount of ENR 50 and LiBF 4 salt (Sigma-Aldrich) were fixed at 10 and 40 wt.% of PMMA respectively [10]. 5 % of D1-SiO 2 hydrogen bonding and D2-SiO 2 was then added into the polymer solution and stirred for 24 hours.…”

Section: Preparation Of Pmma/enr 50/d-sio 2 /Libfmentioning

confidence: 99%

“…However, the amount of DOA need in this modification dictates the ability of the treatment. The well dispersion of SiO 2 in the blend system may also assist in the dispersion of ENR 50 phase in the blend system [10], hence a more physically homogeneous phase can be obtained thus reduced the obstacles in the transportation of lithium ions in the system.…”

Section: Ionic Conductivitymentioning

confidence: 99%

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Effects of Dodecanoic Acid Modified SIO2 on Filler Dispersion and Ionic Conductivity of PMMA/ENR 50/LIBF4 Electrolytes

Azuan

Latif

Zamri

2016

MSF

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Previously, the addition of silicon dioxide (SiO2) improved the homogeneity of polymethyl methacrylate/50 % epoxidised natural rubber (PMMA/ENR 50) blend. However, the presence of SiO2 agglomerates limits its overall performance. The formation of these agglomerates was due to the hydrogen bonding interaction that form between the oxygen atoms in silanol groups (Si-OH) and hydrogen atoms from the surrounding moisture. Therefore, in this study, SiO2 were modified with dodecanoic acid (DOA) to reduce the number of Si-OH on the SiO2 surface using esterification technique. Interestingly, it was found that the addition of DOA modified SiO2 (D-SiO2) improves the homogeneity of PMMA/ENR 50 blend. However, the amount of DOA used in the modification affect the capability of forming hydrogen bonding with the neighbouring of polymer chain. Different amounts of DOA were used upon the surface modification of SiO2 filler and then were added into PMMA/ENR 50 blends doped with lithium tetrafluoroborate (LiBF4). The films were prepared by solvent casting technique. CHNS analysis proven the increases of percentage of carbon atoms in D-SiO2. The attachment of DOA on SiO2 surface was confirmed using Fourier transform infrared spectroscopy (FTIR) and ionic conductivity of PMMA/ENR 50/LiBF4 filled D-SiO2 films was measured by electrochemical impedance spectroscopy (EIS). The result shows the blend properties and ionic conductivity of PMMA/ENR 50 filled D-SiO2 films was improved due to surface modification of SiO2 filler.

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Section: Preparation Of Pmma/enr 50/d-sio 2 /Libfmentioning

confidence: 99%

Section: Ionic Conductivitymentioning

confidence: 99%

Effects of Dodecanoic Acid Modified SIO2 on Filler Dispersion and Ionic Conductivity of PMMA/ENR 50/LIBF4 Electrolytes

Azuan

Latif

Zamri

2016

MSF

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“…Unfortunately, a single polymer system may not give a reasonable ionic conductivity. Thus, many studies revealed that blending with secondary polymer to produce polymer blends were able to improve performance of polymer electrolytes and achieve desired ionic conductivity [5][6][7]. Unfortunately, most of polymer blends are found not homogeneous hence lead to phase separation in the blend systems.…”

Section: Introductionmentioning

confidence: 99%

“…Our previous study, as example, successfully demonstrated that by introduce a small amount of SiO 2 filler may increase ionic conductivity of polymer electrolyte by two magnitudes. Surprisingly, present of SiO 2 filler observed improved the homogeneity of polymer blend phase separation [7]. Many researchers claimed their success to enhance ionic conductivity of the polymer blend films by incorporation of ceramic filler, however, most of polymer filled inert ceramic electrolytes are suffer for filler agglomeration and brittle polymer blend films [7,13].…”

Section: Introductionmentioning

confidence: 99%

“…Surprisingly, present of SiO 2 filler observed improved the homogeneity of polymer blend phase separation [7]. Many researchers claimed their success to enhance ionic conductivity of the polymer blend films by incorporation of ceramic filler, however, most of polymer filled inert ceramic electrolytes are suffer for filler agglomeration and brittle polymer blend films [7,13]. SiO 2 is an inorganic material with tetrahedral structure of siloxanes groups consists of Si-O-Si repeating unit.…”

Section: Introductionmentioning

confidence: 99%

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Effects of Acid Modified SiO2 on Ionic Conductivity and Blend Properties of LiBF4 Doped PMMA/ENR 50 Electrolytes

Zamri

Latif

2015

AMR

Self Cite

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Previously, it was found that the addition of SiO2 filler can improve the homogeneity and enhance the ionic conductivity of lithium tetrafluoroborate (LiBF4) doped polymethyl methacrylate/50 % epoxidized natural rubber (PMMA/ENR 50) blend from 6.21 x 10-7 Scm-1 to 5.26 x 10-6 Scm-1. Unfortunately, this SiO2 filler tend to agglomerates thus obstructing the smoothness in the transportation of lithium ion in the polymer blend matrix. This unruly phenomenon was due to the formation of hydrogen bonding between the oxygen atom of SiO2 and the hydrogen atom from the moisture. Therefore, in this study, this SiO2 filler was modified using hydrochloric acid (HCl) to reduce the formation of hydrogen bonding between SiO2 and moisture. It was found that the modification was able to reduce the hydrogen bond in SiO2 filler. The CHNS analysis shows that the percentage of hydrogen reduces as concentration of acid increased. This was further confirmed from the FT-IR analysis in which the peak corresponding to Si-OH was reduces meanwhile the peaks corresponding to Si-O-Si increases as HCl concentration increased. As a result, the homogeneity of the blends was further improved. However, the ionic conductivity of the system was found slightly reduce by few magnitudes. Temperature dependence ionic conductivity of LiBF4 doped PMMA/ENR 50 filled HCl-SiO2 electrolytes shows nonlinear trend indicates that the system not obeys Arrhenius equation.

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Preparation, characterization, thermal, and electrical properties of lithium salt-magnetite/epoxidized natural rubber composite polymer electrolytes

Tan

Bakar

2016

Ionics

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SIO<sub>2</sub> Filler as Interface Modifier in PMMA/ENR 50 Electrolytes

Cited by 7 publications

References 9 publications

Effects of Dodecanoic Acid Modified SIO<sub>2</sub> on Filler Dispersion and Ionic Conductivity of PMMA/ENR 50/LIBF<sub>4</sub> Electrolytes

Effects of Dodecanoic Acid Modified SIO<sub>2</sub> on Filler Dispersion and Ionic Conductivity of PMMA/ENR 50/LIBF<sub>4</sub> Electrolytes

Effects of Acid Modified SiO<sub>2</sub> on Ionic Conductivity and Blend Properties of LiBF<sub>4</sub> Doped PMMA/ENR 50 Electrolytes

Preparation, characterization, thermal, and electrical properties of lithium salt-magnetite/epoxidized natural rubber composite polymer electrolytes

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