Preparation and Mapping of Alginate Morphologies Using Inverted Nozzle Pressurised Gyration

This work facilitates the fabrication of alginate products from a natural Laminaria source using the newest pressure spinning method, inverted nozzle pressurized gyration (INPG). A coagulation bath with calcium chloride was used as the crosslinker to achieve the ion exchange for the formation of the “egg‐box” structure. The present study investigates the effects of the concentration of spinning solution and coagulation bath, working distance, and pressure on product morphology. The aforementioned variables were found to have a significant impact on the structure and dimensions of the product. However, it should be noted that these variables often act in a complex and interconnected manner, and their influence is frequently the result of combined effects. Consequently, “mapping” was provided to summarize how the combination of parameters alters the morphology. Utilizing the analytical tools of FTIR and XRD, it has been demonstrated that the method employed in this study can be effectively applied to the regeneration of natural alginates. Despite the peak intensities of products displaying varying degrees of change in both spectra, the overall chemical composition as a result of the functional groups remained consistent with the raw material, and suggests that the products are composed of alginate.