| 초록 |
Biodegradable hydrogels based on dopamine-conjugated polyaspartate were prepared, and the swelling property in different metal-ion containing aqueous solutions was investigated. The catechol group of dopamine is well known to exhibit unique adhesive and binding characteristics on a variety of organic/inorganic surfaces. DOP-modified polyaspartate (DOP-PAsp) was prepared by nucleophilic reaction of dopamine to polysuccinimide, the anhydrous poly(L-aspartic acid), and subsequent crosslinking and hydrolysis in pH 9 buffer solution. The swelling property of DOP-PAsp gel with its pH dependency was examined in aqueous solutions containing various kinds of ions to elucidate the adsorption and removal capability. The results suggest that DOP-PAsp has potential for use as hydrogel adhesive and heavy metal-ion adsorbent. |
