51. Role of a high calcium ion content in extending the properties of alginate dual-crosslinked hydrogels
- Author
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Xiaojin Zhang, Kang Wang, Yu Dai, Jiayuan Hu, Fan Xia, and Yuchen Zhang
- Subjects
food.ingredient ,Imine ,Ionic bonding ,macromolecular substances ,02 engineering and technology ,010402 general chemistry ,01 natural sciences ,Gelatin ,Metal ,chemistry.chemical_compound ,food ,General Materials Science ,Solubility ,Renewable Energy, Sustainability and the Environment ,Chemistry ,technology, industry, and agriculture ,General Chemistry ,021001 nanoscience & nanotechnology ,0104 chemical sciences ,Chemical engineering ,Covalent bond ,visual_art ,Self-healing hydrogels ,visual_art.visual_art_medium ,Freezing-point depression ,0210 nano-technology - Abstract
Calcium ions (Ca2+) are extremely important for efficiently improving the mechanical properties of alginate dual-crosslinked hydrogels through the synergy of crack bridging of covalent crosslinking and hysteresis of ionic crosslinking, but it is hard to achieve a high content of Ca2+ (>5 wt%) in these hydrogels for the following reasons. The low solubility and poor dispersion of CaSO4 in the gelling solution lead to a low Ca2+ content (
- Published
- 2020