Journal
JOURNAL OF POLYMERS AND THE ENVIRONMENT
Volume 31, Issue 3, Pages 1221-1231Publisher
SPRINGER
DOI: 10.1007/s10924-022-02691-z
Keywords
Chitosan Membranes; Genipin; Crosslinking; Lactic Acid; Physiochemical Properties; Mechanical Properties
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Chitosan, a linear polysaccharide, is of great interest for biomedical applications. It is important to study the effect of additives on the properties of chitosan, and various material combinations can help enhance its performance.
Chitosan is a linear polysaccharide that has a growing interest in several biomedical applications. Due to its poor solubility in water, aqueous organic acids are required to dissolve chitosan. Chitosan-based materials have been widely investigated for several industrial and biomedical applications. It becomes crucial to study the effect of the additives on the chemical, physical, and mechanical properties of chitosan. Here, we present the effect of various material combinations: chitosan, lactic acid and genipin. We intend to study the effect of elevated concentrations of lactic acid on the stability and elasticity of chitosan membranes. Our research also presents the effect of the concentration of genipin crosslinker, a biocompatible natural product, on the properties of chitosan materials. Obtained results show that lactic acid acts as a physical and a chemical crosslinker between chitosan chains, which leads to increase chitosan membrane stretchability thanks to the plasticizing characteristic of lactic acid. Obtained membranes show a high solubility in water that can be avoided by the introduction of genipin as a crosslinker. This significantly reduces the solubility of membranes in aqueous solutions and makes them more stable even under low pH's.
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