PEMBUATAN DAN KARAKTERISASI FIBER PVA DAN PVA/CHITOSAN YANG MEMUAT NANOPARTIKEL PERAK DENGAN TEKNIK ELEKTROSPINING; FABRICATION AND CHARACTERIZATION OF PVA AND PVA/CHITOSAN FIBERS CONTAINING SILVER NANOPARTICLES WITH ELECTROSPINNING METHOD

Anna Layla Salfarina, Harsojo

2014 | Disertasi | PROGRAM STUDI S2 ILMU FISIKA

Polyvinyl Alcohol (PVA) and PVA/chitosan (CS) blend fibers containing silver nanoparticles were successfully produced with electrospinning method. PVA fibers made from PVA solution of 11% with variation mass of AgNO3 used of 5%, 10%, and 20%. PVA/AgNO3/CS fiber is made by mixing colloidal PVA/AgNO3 and CS with a volume ratio of 9/1 with AgNO3 concentration of 1% and 5%. Silver nanoparticles contained in the fiber obtained by the method of reduction for stirrer 6 hours. Electrospining parameter used is the distance between the tip to to the collector of 13 cm, 15 kV applied voltage, and the diameter of the needle of 0.5 mm. Colloids and fibers are then characterized by UV-Vis to determine the absorbance of silver nanoparticles. Fibers is characterized by Fourier Transform Infrared (FTIR) to determine the bond AgNO3 with PVA and PVA/CS. Fibers characterized by Scanning Electron Microscope (SEM) and Trasnmition Electron Microscope (TEM) to determine the morphology fibers and size distribution and average diameter silver nanoparticles on the surface of fiber. Obtained an average diameter fiber (550 ± 50) nm for PVA/AgNO3 5% with an average diameter of silver nanoparticles (3,5 ± 0,5) nm and a particle density of 18,4 x 103 particles/?m2. In fibers PVA/AgNO3 20% average diameter fiber (500 ± 50) nm. Average diameter fibers of the PVA/AgNO3 5% blend with CS is (370 ± 90) nm with an average diameter of silver nanoparticles is (8,0 ± 1,5) nm and a particle density of 11,2 x 103 particles/?m2. From this study, obtained on the surface of PVA/CS fibers, silver nanoparticles have smaller density and larger size than silver nanoparticles on the surface of PVA fiber without CS.

Kata Kunci : FABRICATION, PVA, SILVER NANOPARTICLES, ELECTROSPINNING METHOD