@article{article_496379, title={The Preparatıon of Gelatin Coated Sodium Alginate Hydrogels}, journal={The Eurasia Proceedings of Science Technology Engineering and Mathematics}, pages={149–155}, year={2018}, author={Pulat, Mehlika}, keywords={Hydrogel,Sodium alginate,Gelatin,Swelling,Sequentially releasing}, abstract={<p> <span lang="TR" style="font-size:10.0pt;line-height: 115%;font-family:"Times New Roman","serif";mso-fareast-font-family:Calibri; mso-ansi-language:TR;mso-fareast-language:AR-SA;mso-bidi-language:AR-SA">In this study, a series of gelatin coated sodium alginate <b> </b>(Na-Alg) hydrogels were prepared. Firstly, three types of hydrogels in bead form were obtained by using the classical ionic crosslinking method of Na-Alg with calcium chloride (CaCl <sub>2 </sub>). Second group was a series of Na-Alg hydrogel beads coated with gelatin. The immersing method was used to get the coated beads. The hydrogel samples were diversified by changing the concentrations of gelatin and CaCl <sub>2 </sub> solutions. The percentages of Na-Alg solution was kept constant at 10%. Swelling tests of all hydrogel beads were gravimetrically carried out in buffer solution at pH=7.0 and swelling percentages were calculated.  It is found that swelling value is decreased by increasing of CaCl <sub>2 </sub> from 5% to 30%. In general, the hydrogels prepared using 5% of crosslinker were unstable. Coating conditions of Na-Alg hydrogel were varied by changing gelatin concentrations from 10% to 20%. The increasing amount of gelatin in coated part causes the decreasing in swelling values of hydrogel beads. </span> <br> </p>}, number={4}, publisher={ISRES Publishing}