Abstract Polymer hydrogel is a new kind of functional polymer soft material with three-dimensional network polymer as the skeleton and water as the medium.Researchers have been looking for a simple sol-gel preparation strategy to improve the mechanical properties of hydrogel.In this paper,we designed and developed a comprehensive experiment of “continuous immersion of gelatin hydrogel in FeCl3 and(NH4)2SO4 solutions to prepare high mechanical strength gelatin hydrogel and mechanical properties test”.This experiment combines the basic theoretical knowledge and experimental skills from the courses of polymer chemistry,polymer physics,and materials mechanics with academic research in the field of materials science.It integrates the methods of polymer material preparation and mechanical properties characterization of polymer materials,which helps to exercise students’ scientific thinking and improve their ability to analyze and solve problems.
BAI Xiao, HU Chang-Song, WANG Chong-Bin, GONG Pei-Wei, GUO Li-Hua. Comprehensive Experimental Design for Preparation of High Mechanical Strength Gelatin Hydrogel by Continuous Immersion Method[J]. Chinese Journal of Chemical Education, 2025, 46(2): 70-75.