Sintesis dan Karakterisasi Nanofiber PANI/PVA dengan Variasi Jarak Nozzle to Collector Menggunakan Metode Electrospinning

Synthesis and Characterization of PANI/PVA Nanofibers with Variation of Nozzle to Collector Distance Using Electrospinning Method

FTIR mengkonfirmasi polianilin yang didoping asam fumarat sebagai polianilin fase garam emeraldin. Penelitian ini bertujuan untuk mengetahui nilai konduktivitas listrik PANI/PVA dengan variasi jarak jarum ke kolektor yaitu 11 cm, 13 cm, 15 cm, dan 17 cm. Metode electrospinning dilakukan pada larutan PANI/PVA untuk membentuk nanofiber polianilin. Larutan electrospinning menggunakan rasio persen 1:1 PANI/PVA (10%). Sifat morfologi dan serat dikarakterisasi menggunakan FTIR, mikroskop optik, dan SEM-EDX. Jumlah serat berkurang dan menjadi lebih halus seiring bertambahnya jarak karena penguapan PVA. Diameter serat PANI/PVA dan serat PVA murni adalah 236 nm dan 256 nm. Diameter serat PVA sedikit lebih besar dari serat PANI/PVA. Konduktivitas listrik dilakukan dengan menggunakan metode four-point probe. Konduktivitas listrik sampel PANI/PVA adalah 1,39 × 10^-6 S/cm pada jarak 15 cm dengan bentuk serat terbaik.

Kata kunci : konduktivitas listrik, electrospinning, PANI, PVA

FTIR confirmed fumaric acid doped polyaniline as a polyaniline emeraldine salt phase. This study aims to determine the value of the electrical conductivity of PANI/PVA with variation in the distance of the needle to the collector, namely 11 cm, 13 cm, 15 cm, and 17 cm. The electrospinning method was carried out on a PANI/PVA solution to form polyaniline nanofibers. The electrospinning solution used a percent ratio of 1:1 PANI/PVA (10%). The morphological and fibre properties were characterized using FTIR, optical microscope, and SEMEDX. The number of fibres decreases and becomes more delicate as the distance increases due to the evaporation of PVA. The diameter of PANI/PVA fibre and pure PVA fibre are 236 nm and 256 nm. The PVA fibre diameter is slightly larger than that of the PANI/PVA fibre. Electrical conductivity was carried out using the four-point probe method. The electrical conductivity of the PANI/PVA sample is 1.39 × 10^ -6 S/cm at a distance of 15 cm with the best fibre shape.

Keywords : electrical conductivity, electrospinning, PANI, PVA