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KMID : 1137820130340030117
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의공학회지
2013 Volume.34 No. 3 p.117 ~ p.122
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Characterization of Cross Linked Hyaluronic Acid Microbeads by Divinyl Sulfone
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Kim Jin-Tae
Lee Deuk-Yong
Jang Ju-Woong
Kim Tae-Hyung
Jang Yong-Wun
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Abstract
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Hyaluronic acid(HA) microbeads were synthesized by dropping the sodium hyaluronate(Streptococcus) solutions in NaOH into a solution mixture of divinyl sulfone(DVS) in 2-methyl-1-propanol, followed by stirring, cleaning and drying process at room temperature. The initial experimental conditions are crosslinking time(CLTi) of 5 h, crosslinking temperature(CLTe) of room temperature, injection air pressure(IAPr) of 5 psi, and DVS concentration( DVSc) of 0.2 vol%, respectively. Then, parametric studies were performed by varying the parameters to investigate the morphology, the porosity, the swelling ratio and the size of the beads. The microbead size pattern was not regular to function of the degree of crosslink. It was observed that the swelling ratio, the degree of crosslink, and the pore size can be controlled by adjusting the CLTi, CLTe and DVSc. Among the parameters investigated, the smallest bead size can be achieved by varying the CLTi parameter. The lowest swelling ratio, as an indication of the highest degree of crosslink, can be obtained by varying CLTe.
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KEYWORD
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Hyaluronic acid microbead, Tissue regeneration, Hydrogel
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