Structural and electrochemical characteristics of 49% PMMA grafted polyisoprene-LiCF3SO3-PC based polymer electrolytes

Alias, Yatimah; Ling, Irene; Kumutha, K.

doi:10.1007/bf02430258

Cited by 32 publications

(25 citation statements)

References 7 publications

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“…With the addition of lithium salt, a new band evolves at the lower frequency side which is at 1,715 cm −1 . The shift of C=O symmetric stretching of MMA peak confirmed the interaction between lithium ions from doping salt and oxygen atoms in the structure of the polymer host to form a coordinate bond and subsequently forming polymer-salt complexes, which is in a good agreement with a previous report [3,4,15,17,18]. The C=O symmetric stretching of MMA peaks is shifted to a lower wave number at 1,712 cm −1 and becomes less intense as the EC content increases.…”

Section: Ftir Studiessupporting

confidence: 89%

“…The main focus of this FTIR is in the region of the carbonyl group (C=O) (1,750-1,730 cm −1 ) and ether group (C-O-C) (1,300-1,000 cm −1 ) in MG49 [4,17]. According to the previous report, the ester functional group in MMA appears through a strong and sharp peak of C=O in the range of 1,750-1,735 cm −1 which shift to a lower wave number by about 15-25 cm −1 in the polymer-salt complexes [5,17,18]; however, a very strong, intense and sharp peak at 1,726 cm −1 in Fig. 2a corresponding to the C=O symmetrical stretching frequency of MG49.…”

Section: Ftir Studiesmentioning

confidence: 99%

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Effect of ethylene carbonate plasticizer and TiO2 nanoparticles on 49% poly(methyl methacrylate) grafted natural rubber-based polymer electrolyte

Low

Ahmad

Rahman

2010

Ionics

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The effect of plasticizer and TiO 2 nanoparticles on the conductivity, chemical interaction and surface morphology of polymer electrolyte of MG49-ECLiClO 4 -TiO 2 has been investigated. The electrolyte films were successfully prepared by solution casting technique. The ceramic filler, TiO 2 , was synthesized in situ by sol-gel process and was added into the MG49-EC-LiClO 4 electrolyte system. Alternating current electrochemical impedance spectroscopy was employed to investigate the ionic conductivity of the electrolyte films at 25°C, and the analysis showed that the addition of TiO 2 filler and ethylene carbonate (EC) plasticizer has increased the ionic conductivity of the electrolyte up to its optimum level. The highest conductivity of 1.1×10 −3 Scm −1 was obtained at 30 wt.% of EC. Fourier transform infrared spectroscopy measurement was employed to study the interactions between lithium ions and oxygen atoms that occurred at carbonyl (C=O) and ether (C-O-C) groups. The scanning electron microscopy micrograph shows that the electrolyte with 30 wt.% EC posses the smoothest surface for which the highest conductivity was obtained.

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Section: Ftir Studiessupporting

confidence: 89%

Section: Ftir Studiesmentioning

confidence: 99%

Effect of ethylene carbonate plasticizer and TiO2 nanoparticles on 49% poly(methyl methacrylate) grafted natural rubber-based polymer electrolyte

Low

Ahmad

Rahman

2010

Ionics

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“…Furthermore, modified natural rubber such as 49% grafted poly(methyl methacrylate) (MG49) with its structure shown in Fig. 2 have a polar group in their carbonyl functional group that will provide coordination sites for Li + conduction [18][19][20][21][22][23]. In addition, the use of modified natural rubber will produce the electrolyte that is low in cost and environmental friendly.…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of blended solid polymer electrolyte 49% poly(methyl methacrylate)-grafted natural rubber:poly(methyl methacrylate)–lithium tetrafluoroborate

Su’ait

Noor

Ahmad

et al. 2012

J Solid State Electrochem

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The preparation and characterization of blended solid polymer electrolyte 49% poly(methyl methacrylate)-grafted natural rubber (MG49):poly(methyl methacrylate) (PMMA) (30:70) were carried out. The effect of lithium tetrafluoroborate (LiBF 4 ) concentration on the chemical interaction, structure, morphology, and room temperature conductivity of the electrolyte were investigated. The electrolyte samples with various weight percentages (wt. %) of LiBF 4 salt were prepared by solution casting technique and characterized by Fourier transform infrared spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM), and electrochemical impedance spectroscopy. Infrared analysis demonstrated that the interaction between lithium ions and oxygen atoms occurred at symmetrical stretching of carbonyl (C0O) (1,735 cm −1 ) and asymmetric deformation of (O-CH 3 ) (1,456 cm −1 ) via the formation of coordinate bond on MMA structure in MG49 and PMMA. The reduction of MMA peaks intensity at the diffraction angle, 2θ of 29.5°and 39.5°was due to the increase in weight percent of LiBF 4 . The complexation occurred between the salt and polymer host had been confirmed by the XRD analysis. The semi-crystalline phase of polymer host was found to reduce with the increase in salt content and confirmed by XRD analysis. Morphological studies by SEM showed that MG49 blended with PMMA was compatible. The addition of salt into the blend has changed the topological order of the polymer host from dark surface to brighter surface. The SEM analyses supported the enhancement of conductivity with the addition of salt. The conductivity increased drastically from 2.0 to 3.4 × 10 −5 S cm −1 with the addition of 25 wt.% of salt. The increase in the conductivity was due to the increasing of the number of charge carriers in the electrolyte. The conductivity obeys Arrhenius equation in higher temperature region from 333 to 373 K with the pre-exponential factor σ o of 1.21 × 10 −7 S cm −1 and the activation energy E a of 0.46 eV. The conductivity is not Arrhenian in lower temperature region from 303 to 323 K.

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“…Recently, rubber polymer electrolytes had drawn the attention of many researchers [3][4][5][6][7][8][9]. Modified natural rubber has attractive attributes; it is free standing, flexible and has good elasticity.…”

Section: Introductionmentioning

confidence: 99%

“…The interaction between the oxygen atoms and lithium ions of the metal salt forms a coordinate bond and generates polymer-salt complexes [5,6]. Previous studies on various MG were reported elsewhere [5,7,8]. However, MG based polymer electrolytes without plasticizers such as polypropylene carbonate (PC) and ethylene carbonate (EC) provide low ionic conductivity values.…”

Section: Introductionmentioning

confidence: 99%

Study of MG49-PMMA Based Solid Polymer Electrolyte

Ahmad¹,

Rahman

Su’ait³

et al. 2011

TOMSJ

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Abstract:The studies of rubber-polymer blends as solid polymer electrolyte for electrochemical devices application have been investigated. The electrolyte films were prepared by solution casting technique. The effect of poly(methyl methacrylate) (PMMA) and lithium tetrafluoroborate (LiBF 4 ), salt concentration on chemical interaction, ionic conductivity, structure and morphology of 49% poly(methyl methacrylate)-grafted natural rubber (MG49) have been analyzed by using fourier transform infrared spectroscopy (FT-IR), electrochemical impedance spectroscopy (EIS), x-ray diffraction (XRD) and scanning electron microscopy (SEM). Infrared analysis showed that the interaction between oxygen atoms and lithium ion occurred at ether (C-O-C) and carbonyl (C=O) group in the MMA host. The highest ionic conductivity for blended MG49-PMMA films is 8.3 10 -6 S cm -1 as compared to MG49 electrolyte with 9.6 10 -10 S cm -1 at 25 wt. % LiBF 4 . The structural analysis showed the reduction of MMA crystallinity phase at the highest conductivity for both systems. Meanwhile, morphological analysis shows that recrystallization of LiBF 4 salts have occurred in the electrolyte system after the optimum conductivity.

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Structural and electrochemical characteristics of 49% PMMA grafted polyisoprene-LiCF3SO3-PC based polymer electrolytes

Cited by 32 publications

References 7 publications

Effect of ethylene carbonate plasticizer and TiO2 nanoparticles on 49% poly(methyl methacrylate) grafted natural rubber-based polymer electrolyte

Effect of ethylene carbonate plasticizer and TiO2 nanoparticles on 49% poly(methyl methacrylate) grafted natural rubber-based polymer electrolyte

Preparation and characterization of blended solid polymer electrolyte 49% poly(methyl methacrylate)-grafted natural rubber:poly(methyl methacrylate)–lithium tetrafluoroborate

Study of MG49-PMMA Based Solid Polymer Electrolyte

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