Polymer Electrolytes Based on Modified Natural Rubber

Glasse, M. D.; Idris, Razali; Latham, R. J.; Linford, R. G.; Schlindwein, Walkiria

doi:10.1142/9789812791979_0059

Cited by 33 publications

(48 citation statements)

References 13 publications

(15 reference statements)

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“…Figure 3 shows the XRD patterns of composite polymer electrolyte films with various concentration of NiO as well as for pure PEO and NiO filler. The appearance of amorphous region or the reduction of crystalline region would give a high ionic conductivity as com< pared to the crystalline or semicrystalline region as reported elsewhere [16][17][18][19][20][21]. The indexing of the two PEO peaks is reported to be at 19.5°and at 23.5°of monoclinic system [22].…”

Section: Resultssupporting

confidence: 71%

Effect of NiO nanofiller concentration on the properties of PEO-NiO-LiClO4 composite polymer electrolyte

Fahmi

Ahmad

Rahman

et al. 2012

J Solid State Electrochem

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Composite polymer electrolyte films comprising polyethylene oxide (PEO) as the polymer host, LiClO 4 as the dopant, and NiO nanoparticle as the inorganic filler was prepared by solution casting technique. NiO inorganic filler was synthesized via sol-gel method. The effect of NiO filler on the ionic conductivity, structure, and morphology of PEO-LiClO 4 -based composite polymer electrolyte was investigated by AC impedance spectroscopy, X-ray diffraction, and scanning electron microscopy, respectively. It was observed that the conductivity of the electrolyte increases with NiO concentration. The highest room temperature conductivity of the electrolyte was 7.4×10 −4 S cm −1 at 10 wt.% NiO. The observation on structure shows the highest conductivity appears in amorphous phase. This result has been supported by surface morphology analysis showing that the NiO filler are well distributed in the samples. As a conclusion, the addition of NiO nanofiller improves the conductivity of PEO-LiClO 4 composite polymer electrolyte.

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Section: Resultssupporting

confidence: 71%

Effect of NiO nanofiller concentration on the properties of PEO-NiO-LiClO4 composite polymer electrolyte

Fahmi

Ahmad

Rahman

et al. 2012

J Solid State Electrochem

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“…The appearance of amorphous region or the reduction of crystalline region would give a high ionic conductivity as compared to the crystalline or semicrystalline region as shown by others [2,3,[20][21][22]. Fig.…”

Section: Structural Studiesmentioning

confidence: 90%

“…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%

“…Modified natural rubber with polar groups can also act as a polymeric solvent and the ionic conductivity value is expected to be higher as compared to glassy or crystalline state of polymer [2]. However, modified natural rubber such as epoxidized natural rubber (ENR) shows a drawback to its mechanical properties, such as slightly sticky and difficult to peel off from substrate [3,4,10]. On the other hand, MG49 is more free standing, flexible and has good elasticity.…”

Section: Introductionmentioning

confidence: 99%

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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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“…Epoxidized natural rubber (ENR50) has gained numerous attentions from many researches for its distinctive properties of having low glass transition temperature (T g ) with good elasticity and adhesion properties [13][14][15]. In addition, it can provide coordination sites for Li + ions conduction and can produce a great number of charge carriers for ionic transport because it exhibits a lone pair of electrons from the oxygen atom [3].…”

Section: Introductionmentioning

confidence: 99%

Temperature dependence of the conductivity of plasticized poly(vinyl chloride)-low molecular weight liquid 50% epoxidized natural rubber solid polymer electrolyte

Lee

Afiqah

Ahmad

et al. 2012

J Solid State Electrochem

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Characterizations were carried out to study on a new plasticized solid polymer electrolyte that was composed of blends of poly(vinyl chloride) (PVC), liquid 50% epoxidized natural rubber (LENR50), ethylene carbonate, and polypropylene carbonate. This freestanding solid polymer electrolyte (SPE) was successfully prepared by solution casting technique. Further analysis and characterizations were carried out by using scanning electron microscopy (SEM), X-ray diffraction, differential scanning calorimeter (DSC), Fourier transform infrared (ATR-FTIR), and impedance spectroscopy (EIS). The SEM results show that the morphologies of SPEs are compatible with good homogeneity. No agglomeration was observed. However, upon addition of salt, formation of micropores occurred. It is worth to note that micropores improve the mobility of ions in the SPE system, thus increased the ionic conductivity whereas the crystallinity analysis for SPEs indicates that the LiClO 4 salt is well complexed in the plasticized PVC-LENR50 as no sharp crystallinity peak was observed for 5-15% wt. LiClO 4 . This implies that LiClO 4 salt interacts with polymer host as more bonds are form via coordination bonding. In DSC study, it is found that the glass temperature (T g ) increased with the concentration of LiClO 4 . The lowest T g was obtained at 41.6°C when incorporated with 15% wt. LiClO 4 . The features of complexation in the electrolyte matrix were studied using ATR-FTIR at the peaks of C0O, C-O-C, and C-Cl. In EIS analysis, the highest ionic conductivity obtained was 1.20× 10 −3 S cm −1 at 15% wt. LiClO 4 at 353 K.

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Polymer Electrolytes Based on Modified Natural Rubber

Cited by 33 publications

References 13 publications

Effect of NiO nanofiller concentration on the properties of PEO-NiO-LiClO4 composite polymer electrolyte

Effect of NiO nanofiller concentration on the properties of PEO-NiO-LiClO4 composite polymer electrolyte

Study of MG49-PMMA Based Solid Polymer Electrolyte

Temperature dependence of the conductivity of plasticized poly(vinyl chloride)-low molecular weight liquid 50% epoxidized natural rubber solid polymer electrolyte

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