The preparation of silver fiber with electrospinning process was a principle to impulse the iron within the polymer solution. The polymer solution jetted onto the ground collector in nonwoven form when the electric charge was higher than the polymer surface tension. This research had 3 key factors consideration that were electric power supply polymer concentration and length between needle tip and aluminum ground collector. The electric voltage was 6 9 12 15 and 18 kilovolt the ratio of Ag : polymer solution (%wt) was 1:10 1:20 and 1:30 and the length between needle tip and aluminum foil collector was 6 7 8 9 and 10 centimeter respectively. The fibers obtained were investigated and compared to the fiber morphology by Scanning Electron Microscope and the anti-bacteria test via AATCC test method 100-1999 (Quantitative) and 147-1998 (Quality). The optimal electrospinning condition was 18 kilovolt the ratio of Ag : PVA (%wt) was 1:20 at length 7 centimeter. The fibers were continuous average diameter as 183.3 nanometer and available to against bacteria.

Degumming process is a fundamental process for silk yarn and silk fabric finishing. The main objective is scouring the substrate such as silk gum (sericin) wax and fatty acid from silk fiber. The principle of degumming process is breaking the peptide linkage of amino acid in sericin structure into a small molecule which is soluble in water. The hydrolysis reaction is performed by acid and alkaline but they have a big problem on the surface area of silk. Proteolytic enzyme is used to solve this problem but it has some disvantages such as using a specific condition and high price. For this reason papain enzyme form dry latex of Carica papaya Linn. is choren to degum the raw silk. Papain is an enzyme which has a good protein digestion. The efficiency of degumming process was evaluated by determination of tensile strength and staining test with direct dyes (C.I. Direct Red 80). The result revealed that the appropriate conditions for silk degumming with dry Carica papaya Linn.๛s latex should be recommended as follows: the amount of dry latex solution of 4% owf at 75 ฐC for 30 minutes at neutral condition (pH ≈7). The degummed fibers had lustrous soft and smooth surface. The fiber strength and surface were not damaged on this process.