Efek Larutan Elektrolit dan Temperatur terhadap Sifat Ntc/Ptc Karbon Tempurung Kelapa, Karbon N.330 dan Grafit

Abstract

A research has done the effect of temperature on coconut carnel carbon, carbon N.330, and graphit in aced solution, base solution, and water have been carried out. All of carbon types are soaked in acid solution, base solution and water during 24 hours and then filtred, then its filtrates is throw out and its residu is then analyse electric properties, where its resistivities are increased and its resistivities are decreased with increasing with temperature. Increasing and decreasing of resistivities with increasing in temperature are called PTC/NTC effect and this effect are in the area of boilling point of solution. The effect PTC/NTC is also called boilling point of solution, and this effect is compared with DSC data where it is carbon treatment are the same and soaked in acid, base and water. The result of research showed that there is anomaly in the boilling point due to of carbon – solution where strong interaction will increase boilling point because high heat require to release that interaction force.

Telah diteliti pengaruh temperatur terhadap karbon tempurung kelapa, karbon N.330 dan grafit dalam larutan asam, basa dan air. Ketiga jenis karbon di rendam dalam larutan asam, basa dan air selama 24 jam kemudian disaring, filtratnya dibuang dan residunya di analisa sifat listriknya, ternyata resistivitas meningkat dan menurun dengan kenaikan temperatur. Meningkat dan menurunnya resistivitas dengan kenaikan temperatur disebut gejala NTC (Negative Temperature Coefficient)/ PTC (Positive Temperature Coefficient) dan gejala ini berada pada daerah titik didih larutan. Gejala NTC/PTC disebut juga titik didih larutan dan hal ini dibandingkan dengan data DSC (Diffrential Scanning Calorimetry) yang perlakuan karbonnya sama direndam pada asam, basa dan air. Hasil penelitian membuktikan ada anomali titik didih dari interaksi karbon –larutan dimana interaksi yang kuat akan meningkatkan titik didih karena dibutuhkan panas yang tinggi untuk melepaskan gaya interaksi tersebut.