KAJIAN NANOFIBER POLYACRYLONITRILE (PAN) SEBAGAI MATRIKS POLMER 3,4-ETHYLENEDIOXIOPHENE:POLYSTYRENESULFONATE

ANDIKA PUTRA UTAMA, Dr. Chotimah, M.Si

2020 | Skripsi | S1 FISIKA

Sensor gas memiliki peran penting dalam pendeteksian sejumlah gas berbahaya di lingkungan sekitar. Polimer konduktif PEDOT:PSS memiliki potensi untuk dimanfaatkan sebagai pendeteksi gas amonia. Nanofiber PAN, lapisan tipis PEDOT:PSS dan nanofiber PAN/PEDOT:PSS telah berhasil dibuat. Nanofiber PAN dibuat dengan metode electrospinning, lapisan tipis polimer PEDOT:PSS dideposit dengan metode drop casting, dan nanofiber PAN/PEDOT:PSS dibuat dengan cara drop casting PEDOT:PSS ke nanofiber PAN. Larutan PAN 6% w/w di electrospinning dengan parameter tegangan 5 kV, jarak antara ujung jarum dan kolektor 12 cm, dan diameter jarum 0,25 mm pada suhu lingkungan. Lapisan tipis PEDOT:PSS memiliki konduktivitas lebih tinggi dibandingkan lapisan nanofiber PAN/PEDOT:PSS. Hasilnya, lapisan nanofiber PAN/PEDOT:PSS lebih sensitif terhadap gas amonia daripada lapisan tipis PEDOT:PSS. Kedua lapisan tipis tersebut memiliki sifat reversibilatas yang berpotensi dijadikan pendeteksi gas amonia.

Gas sensors have an important role in detecting the amount of harmful gases in the surrounding environment. PEDOT:PSS conductive polymer has the potential to be used as an ammonia gas detector. PAN nanofiber, PEDOT:PSS thin film and PAN/PEDOT:PSS nanofiber were successfully fabricated using electrospinning method. The thin film of PEDOT:PSS polymer was deposited with drop casting method, and PAN/PEDOT:PSS nanofiber were produced using drop casting method of PEDOT:PSS to PAN nanofiber. PAN in concentration 6% w/w were produced in the voltage 5 kV, with tip to collector 12 cm and syringe diameter 0,25 mm in the room temperature. PEDOT:PSS thin film shows a higher conductivity than PAN/PEDOT:PSS one. But PAN/PEDOT:PSS nanofiber is more sensitive to ammonia than PEDOT:PSS nanofiber. Both nanofiber shows potential reversibility to detect ammonia.

Kata Kunci : PEDOT:PSS, PAN, electrospinning, conductivity, sensitivity, ammonia gas sensor