Adsorption capability of urethane-crosslinked heptakis(2,6-di-O-methyl)-beta-cyclodextrin polymers toward polychlorobiphenyls in nonpolar organic media

作者：Kawano Shintaro; Kida Toshiyuki; Miyawaki Kazuhiro; Fukuda Yasunori; Kato Eiichi; Nakano Takeshi; Akashi Mitsuru^*

来源：Polymer Journal, 2015, 47(6): 443-448.

DOI：10.1038/pj.2015.13

Urethane-crosslinked beta-cyclodextrin polymers are prepared by crosslinking heptakis(2,6-di-O-methyl)-beta-cyclodextrin (DM-beta-CD) with various diisocyanate linkers, such as 4,4'-methylenebis(phenyl isocyanate) (MDI), 1,4-phenylene diisocyanate (PDI) and hexamethylene diisocyanate (HMDI), in DMF. Among these polymers, MDI- and PDI-crosslinked polymers have high adsorption capabilities toward polychlorobiphenyls (PCBs), such as tetra, penta and hexachlorobiphenyl, in isooctane. Toward hexachlorobiphenyl in insulating oil, the adsorption capability of the MDI-crosslinked polymer increases with the adsorption temperature. In addition, using acetone as a washing solvent gives the highest recovery percentage of the PCB from the PCB-adsorbed polymer.

• 出版日期2015-6