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Kajian terhadap potensi pengeteran poli(vinil alkohol) sebagai bahan elektrolit polimer

Loh MinYi, Mohd Sukor Su'ait, Marliyana Mokhtar, Fatihah Najirah Jumaah, Nadhratun Naiim Mobarak, Azizan Ahmad


Potensi pengeteran poli(vinil alkohol) (PVA) sebagai polimer induk untuk aplikasi elektrolit polimer telah dikaji. Poli(propil vinil eter) (PPVE) telah disintesis melalui proses pengeteran yang juga dikenali sebagai tindak balas sintesis eter Williamson dengan mekanisme penukargantian nukleofilik dwimolekul, SN2 di mana PVA dan pelbagai kepekatan iodopropana telah ditindakbalaskan dengan kemolaran NaOH yang berbeza. Hasil tindak balas, PPVE ditentukan dengan menggunakan spektroskopi inframerah dan spektroskopi resonans magnet nukleus. Didapati struktur kimia PVA mengalami anjakan nombor gelombang bagi kumpulan hidroksil, –OH. Manakala perubahan dari segi keamatan bagi puncak penyerapan kumpulan alkil iaitu –CH3 dan –CH2 serta kumpulan eter, –C–O menunjukkan tindak balas penukargantian SN2 telah berjaya dilakukan. Sifat kekonduksian polimer terubahsuai yang dianalisis menggunakan kaedah spektroskopi impedans elektrokimia memberikan nilai kekonduksian bagi elektrolit polimer PPVE iaitu 2.79 ´ 10-6 S cm-1. Keputusan kajian awal ini menunjuk bahawa polimer terubahsuai perlu melalui langkah pengoptimuman kekonduksian bagi mengenalpasti potensinya sebagai polimer induk dalam sistem elektrolit polimer serta aplikasi bateri ion litium.


Energy Storage material; polymer electrolyte; poly(vinyl alcohol); Poly(propyl vinyl ether); Williamson ether synthesis reaction

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