Pembuatan Material Sensor Kelembaban Relatif Berbasis Film Polianilin-Selulosa Ampas Tebu
DOI:
https://doi.org/10.25077/jfu.6.2.107-112.2017Abstract
Telah dilakukan pembuatan material sensor kelembaban relatif berbasis film polianilin-selulosa ampas tebu. Sintesis selulosa ampas tebu dilakukan menggunakan metode hidrolisis dengan penambahan NaOH 17,5% dan HCl 0,1 M. Pembuatan PANi-selulosa menggunakan 10 ml anilin dengan variasi selulosa 0,50 g, 1,00 g dan 1,50 g. PANi-selulosa yang dihasilkan dikarakterisasi menggunakan FTIR. Film PANi-selulosa dibuat dengan metode dip coating selama 10 menit. Pengukuran resistansi film PANi-selulosa terhadap perubahan kelembaban relatif menggunakan ohmmeter dilakukan dalam chamber. Hasil karakterisasi FTIR menunjukkan penambahan selulosa menghasilkan ikatan amina, alkana, alkena yang lebih banyak. Sintesis selulosa menghasilkan selulosa sebanyak 12,71 g dari 50,00 g ampas tebu. Material sensor kelembaban relatif yang dibuat dari bahan PANi-selulosa ampas tebu dapat bekerja pada kelembaban relatif 32,65 – 93,10 %. Pengukuran resistansi menunjukkan penambahan selulosa dan peningkatan kelembaban relatif akan memperkecil nilai resistansi. Linearitas sensor yang tertinggi didapatkan pada sampel dengan penambahan selulosa 1,00 g dengan R2 = 0,932. Uji durabilitas selama 18 hari menunjukkan nilai resistansi naik terutama pada kelembaban relatif di atas 75,51 %. Durabilitas tertinggi diperoleh pada sampel dengan penambahan selulosa 0,50 g.
Kata kunci : polianilin, selulosa ampas tebu , sensor kelembaban
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