PENGARUH POLIMERISASI POLYANILINE, KONSENTRASI PVA- POLYANILINE, DAN PEMANASAN TERHADAP MORFOLOGI NANOFIBER HASIL ELECTROSPINNING; EFFECT OF POLYANILINE POLYMERIZATION, PVA-POLYANILINE CONCENTRATION, AND HEATING TREATMENT ON THE ELECTROSPUN NANOFIBER MORPHOLOGY

HIDAYAT, ANJAR TAUFIK, Kuwat Triyana

2016 | Disertasi | FMIPA

In this work, the mixture of hydrochloride acid doped polyaniline (PANI-HCl) and poly(vinyl alcohol) (PVA) was used to form nanofiber through electrospinning method. The aim of this research was to understand the effect of PANI polymerization, PVA-polyaniline concentration and heating process to the electrospun nanofiber morphology. PANI powder was prepared by conventional and rapid mixing polymerization methods. The solution for electrospinning was prepared with the ratio of PANI/PVA = 1/1 and PVA concentration in the solution were 11, 12 and 13%. Nanofibers were fabricated by electrospinning methods in 15 kV, the 14-cm distance of syringe's tip to the collector, 0.8-mm syringe needle diameter, and medium state blower. PANI nanofibers have been successfully fabricated by electrospinning method with PVA as a matrix showed by 78-280-nm and 68-104-nm fiber’s diameter from PANI A and PANI B. Diameter of the fibers was reduced after being heated to 51-130-nm and 41-68-nm of fibers fabricated from PANI A and PANI B. Scanning electron microscopy (SEM) image was also showed diameter decreasing of the fiber accord with decreasing of PVA concentration on the fibers. Fourier transform infra red (FTIR) spectrum of fibers before and after being heated showed: There were still PVA left in the fibers showed from PVA main peaks showed on the FTIR spectrum of fibers after being heated; the conductivity was decreasing due to HCl-doping loss proved by reducing of Q=N+H-B or B-N+H-B vibration peak intensity as a character of conducting PANI.

Kata Kunci : N