Fabrication of chitosan-polyethylen oxide nanofiber mats containing green tea extract

Herein, CS-PEO nanofibrous mats containing 0% and 1% of green tea (GT) aqueous extract were developed by electrospinning technique. The FE-SEM micrographs of the mats exhibited that in both cases very uniform fibers free of any nanobeads and droplets were formed that were about 70 nm in size. The tensile strength analysis revealed that the elongation at break of the mat including 1% GT is increased but its tensile strength is decreased. The reason for the higher swelling of the mat by addition of GT can be attributed to the interaction of the amino NH2, C(O)NH2 amido and OH groups of the chitosan and PEO polymers as well as the OH groups of GT with the aqueous medium. Also, the swelling is the highest in acidic medium but it is decreased in the neutral environment and it has the least value within the alkaline medium.

کلیدواژه ها:

Electrospinning ، Chitosan ، FE-SEM ، XRD ، Polyethylen oxide ، Green tea