Malaysian Journal of Analytical Sciences Vol 22 No 3 (2018): 491 - 498

ELECTROCHEMICAL PROPERTIES OF POLYMER ELECTROLYTES TREATED WITH 6PPD ON 30% POLY(METHYL METHACRYLATE) GRAFTED NATURAL RUBBER

(Sifat Elektrokimia Elektrolit Polimer 30% Poli(Metil Metakrilat) Cangkutan Getah Asli Terawat Dengan 6PPD)

Ahmad Fairoz Aziz¹, Khuzaimah Nazir¹. Siti Fadzilah Ayub¹, Nurul Ilham Adam², Muhd Zu Azhan Yahya³, Ab Malik Marwan Ali^1,4*

¹Faculty of Applied Sciences,

Universiti Teknologi MARA, 40450 Shah Alam, Malaysia

²Faculty of Applied Sciences,

Universiti Teknologi MARA, 35400 Tapah Road, Perak, Malaysia

³Faculty of Defence Science and Technology,

Universiti Pertahanan Nasional Malaysia, 57000 Kuala Lumpur, Malaysia

⁴Institute of Science,

Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia

*Corresponding author: ammali@salam.uitm.edu.my

Received: 4 December 2016; Accepted: 1 December 2017

Abstract

30% poly(methyl methacrylate) grafted natural rubber was treated with N-(1,3-dimethylbutyl)-N’-phenyl-p-phenylenediamine (6PPD) additive (TMG30) to retard its degradation before further used as electrolytes. The polymer electrolytes containing MG30-6PPD-LiTF were prepared by solution cast technique. X-ray diffraction studies show the electrolytes with the highest salt content are amorphous in nature. The TMG30-salt complexes were confirmed by using Fourier transformation infrared analysis. The highest ionic conductivity of the TMG30 polymer electrolytes containing 40 wt.% LiTF was found to be 1.5 x 10^-2 S/cm at room temperature. Transference number studies show that the sample with highest ionic conductivity exhibits the charge transport species in this TMG30 polymer electrolyte film is predominantly due to ions.

Keywords: methyl-grafted natural rubber, n-(1,3-dimethylbutyl)-n’-phenyl-p-phenylenediamine, polymer electrolytes

Abstrak

30% poli(metil metakrilat) cangkutan getah asli telah terawat dengan bahan tambah N-(1,3-dimetilbutil)-N’-fenil-p-fenilindiamine (6PPD) (TMG) untuk melambatkan kemerosotan sebelum digunakan sebagai elektrolit. Elektrolit polimer yang mengandungi MG30-6PPD-LiTf telah disediakan melalui teknik pengacuan larutan. Kajian pembelauan sinar-X menunjukkan elektrolit dengan kandungan garam tertinggi berada dalam keadaan amorfus. Pengkompleksan TMG30-garam telah disahkan dengan menggunakan analisis spektroskopi inframerah transformasi Fourier. Elektrolit polimer TMG30 mengandungi 40 wt.% LiTF didapati menghasilkan kekonduksian ionik tertinggi pada 1.5 x 10^-2 S/cm untuk di suhu bilik. Kajian nombor angkutan terhadap sampel filem elektrolit polimer TMG30 yang mempunyai kekonduksian ionik tertinggi menunjukkan pengangkutan cas dalam sampel tersebut adalah disebabkan oleh pergerakan ion.

Kata kunci: cangkutan metil-getah asli, n-(1,3-dimetilbutil)-n’-fenil-p-fenilindiamin, elektrolit polimer

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