Silicon Dioxide filled Polymethyl methacrylate / 50% epoxidized natural rubber with propylene

carbonate electrolyte

NAMEMUHAMMAD HAKIM BIN HALIM

NAME OF SUPERVISORSHARIL FADLI MOHAMAD ZAMRI

INTRODUCTION PMMA as the polymer host, because of the existence of the carbonyl (C=O) and methoxy (-O-CH3) group, providing site for coordinative bond allowing ion hoping, Unfortunately, PMMA is brittle and hard

Resulting in low chain mobility which is not suitable for ion hoping mechanism . Hence ENR 50 will be add to provide extra flexibility and soften it to enhance the ion hoping mechanism

But, the PMMA/ENR 50 blend are not homogenous, hence phase separation are formed, phase separation are not desirable as it can reduce the efficiency of the ion hoping mechanism

Thus SiO2 is added to reduce phase separation, but SiO2 tend to agglomerate when mixed with the polymer blend

While PC added to improve ionic conductivity and the effects of its addition were studied

PC

Problem Statement

1.PMMA/ENR 50/SiO2 electrolyte system is agglomerated

2.Ionic conductivity of PMMA/ENR 50/SiO2+ is low

Significance of Study

1. To investigate the effect of PC on the agglomeration in PMMA/ENR 50/ SiO2 electrolyte system

2. To improved the ionic conductivity of PMMA/ENR 50/ SiO2 electrolyte system with the addition of PC

Objective of Study

Contribute to new knowledge on preparation of polymer electrolytes with improved physical and electrochemical properties.

LITERATURE REVIEWResearch by Finding

(Hu et al., 2006) and (Su'ait et al., 2009)

PMMA membrane was brittle and has poor mechanicalProperties, hence PMMA cannot be use directly as polymer electrolyte

(Aurbach, 1999)

PC possesses outstandingly high dielectric constant of 64. PC usually used as high-permittivity component of electrolytes in lithium batteries

(Kuila et all, 2007)

Addition of PC into the polymer electrolyte system found to lowered the glass transition temperature and improved ionic conductivity

MATERIALS AND METHOD

RESULT & DISCUSSION: FTIR

% T

rans

mitt

ance

Wavenumber cm-1

RESULT & DISCUSSION: FTIR

% T

rans

mitt

ance

Wavenumber cm-1

RESULT & DISCUSSION: TGA

RESULT & DISCUSSION: OM

PMMA + ENR 50 + SiO2 + PC

PMMA + ENR 50 + SiO2 + PC + LIBF4

PMMA + ENR 50 + SiO2 + LiBF4

PMMA + ENR 50 + SiO2

RESULT & DISCUSSION: DSC

Polymer film Glass Transition Temperature, Tg (°C)

 

Tg1

 

Tg2

 

 

Tg3

PMMA/ENR 50

with SiO2

40.833 93.000 106.833

PMMA/ENR 50

with SiO2 and

PC

39.833 90.666 105.666

RESULT & DISCUSSION: DSC

RESULT & DISCUSSION: EIS

PCWithoutPC

CONCLUSION • FTIR,TGA,OM,DSC AND EIS were

successfully used in the study of the thermal, morphology, and conductivity of the PMMA/ENR 50/SiO2 polymer electrolyte

• PC found to improved ionic conductivity up to 30%

RECOMMENDATION• Based on this study, it can be

interesting to see how different amount of PC added will affect the ionic conductivity of the polymer electrolyte, whether the more is better or there is a limited amount of PC can be used to improve ionic conductivity of the polymer electrolyte

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