: Evaluation of the degree of esterification using FT-IR and 1HNMR 2023 Elsevier B.V.In this work, we prepared polyvinyl pyrrolidone (PVP) microfibers incorporated water-in-oil (W/O) emulsions. The W/O emulsions were fabri... Ronny G Huamani-Palomino,P. M.,Glenda Oliveira,... - ...