Adsorptive Selectivity of DNA/Polyvinyl Alcohol Interpenetrating Polymer Networks
Abstract:An interpenetrating polymer network (IPN) containing natural DNA was prepared by cross-linking polyvinyl alcohol (PVA) with a glutaraldehyde (GA) reagent and then cross-linking DNA with UV irradiation. This DNA/PVA IPN structure could selectively bind chemicals with affinity for DNA, and adsorb L-tryptophan (L-Trp) with a high chiral-selectivity over D-Trp. More than ten times more L-Trp was adsorbed on the DNA/PVA IPN membrane than D-Trp. This readily available adsorbent has high prospects in diverse practical applications, such as the removal of pollutants from water, purification of medicines, as well as separation of enantiomers.
Document Type: Research Article
Affiliations: 1: Division of Bioscience, Graduate School of Environmental Earth Science, Hokkaido University, Sapporo, Japan 2: Key Laboratory of Advanced Textile Materials and Manufacturing Technology, Ministry of Education of China, Zhejiang Sci-Tech University, Hangzhou, China
Publication date: 2011-01-01