Gelation dynamics of ionically crosslinked alginate gel with various cations

Authors
Gwon, Seok HyeonYoon, JuilSeok, Hyun KwangOh, Kyu HwanSun, Jeong-Yun
Issue Date
2015-12
Publisher
SPRINGER
Citation
MACROMOLECULAR RESEARCH, v.23, no.12, pp.1112 - 1116
Abstract
Alginates can be crosslinked with multivalent cations, leading eventually to hydrogel formation. The properties of alginate gel depend on its lock structure, monomeric composition, concentration of polymer and cross linker. Among these, the properties of ionically crosslinked alginate gel can be greatly affected by multivalent cations as cross-linker. Knowledge of gelation dynamics by multivalent cations allows control over gelation characteristics, such as modulus of gel and the time required for equilibrium state, and healing properties. We have studied gelation dynamics of ionically crosslinked alginate gel. According to different types of anions bound with cations, gelation time and equilibrium viscosity was changed due to the solubility kinetics of the cation. The equilibrium viscosity is increased as the size of the cations increased even though the cations have same valency. A theoretical model is introduced to interpret dynamic change of viscosity during gelation.
Keywords
EGG-BOX MODEL; ALGINATE/POLYACRYLAMIDE HYDROGELS; CALCIUM ALGINATE; METAL IONS; BIOCOMPATIBILITY; STRENGTH; KINETICS; alginate; multivalent cations; toughness; gelation dynamics; ionically crosslinked
ISSN
1598-5032
URI
https://pubs.kist.re.kr/handle/201004/124660
DOI
10.1007/s13233-015-3151-9
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KIST Article > 2015
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