The Effect of Polyvinyl Alcohol on the Physico-Chemical Properties of Collagen-Chitosan Membranes

This study aims to increase the tensile strength and elongation of the collagen chitosan membrane by adding various concentrations of polyvinyl alcohol (PVA). Membrane samples were made in four treatment groups by adding different concentrations of PVA. The compositions of collagen-chitosan-PVA were 3-2-3, 3-2-5, 3-2-7.5, and 3-2-10, and the prepared study samples were tested for water absorption, FTIR, Scanning Electron Microscope, tensile strength, and membrane break elongation. Meanwhile, the four groups were analyzed for tensile strength and elongation at break of the membranes using the ANOVA statistical test, at a significance of p <0.05. The PVA-collagen-chitosan membrane had a porous surface, and higher percentages of PVA addition could produce a dense membrane. The range of tensile strength and break elongation of the membrane were 9.75 MPa - 21.35 MPa and 10.25% - 40.97%, respectively. Also, the sample with the composition of collagen composition-chitosan-PVA at 3-2-3 was significantly different from that of 3-2-7.5 and 3-2-10 but not 3-2-5. The tensile strength and elongation at break of the collagen-chitosan membrane were higher with the addition of polyvinyl alcohol.