MIPs logo MIPdatabase      MIP2020 Conference logo Use this space
Custom Search
Reference type: Journal
Authors: Yamashita K, Nishimura T, Ohashi K, Ohkouchi H, Nango M
Article Title: Two-step imprinting procedure of inter-penetrating polymer network-type stimuli-responsive hydrogel-adsorbents.
Publication date: 2003
Journal: Polymer Journal
Volume: 35
Issue: (7)
Page numbers: 545-550.
DOI: 10.1295/polymj.35.545

Abstract: We prepared an imprinted hydrogel-adsorbent, which consists of poly (N-isopropylacrylamide (NIPAm)) and poly(sodium acrylate (NaAAc)) gel. We used an inter-penetrating polymer network (IPN) system in the preparation of thermosensitive hydrogel in order to overcome the fundamental defect that the PNIPAm hydrogel loses the thermosensitive volume-phase transition behavior in the presence of polyelectrolyte. Our imprinting strategy of the hydrogel-adsorbent is the following two-step procedure; (1) Firstly, we prepared a soft PNaAAc gel that can bind a guest molecule and change its conformation in accordance with the guest molecule, and then the hydrogel was incubated in heavy metal ion solution to bind the template molecules. (2) Secondly, we tightly fasten the metal bound hydrogel with a secondary gel-network of NIPAm by means of IPN system in order to memorize the coordination structure for the metal ions on the PNaAAc gel. The imprinted hydrogel-adsorbent selectively bound the template ion above a lower critical solution temperature (LCST) of PNIPAm. The memory was fixed by shrinking above the LCST, and was deleted by swelling below the LCST
Template and target information: copper ion, Cu(II)

  SMI logo mouse mat  Periodic table Perfect shirt    mug featuring the element Copper

Molecules Special Issue call      Appeal for information


Join the Society for Molecular Imprinting
Logo of the Society for Molecular Imprinting

New items RSS feed
new items RSS feed  View latest updates

Sign-up for e-mail updates:
Choose between receiving an occasional newsletter or more frequent e-mail alerts.
Click here to go to the sign-up page.

Is your name elemental or peptidic? Enter your name and find out by clicking either of the buttons below!
Other products you may like:
view listings for MIP books on eBay:

Mickey Mouse 90th Anniversary banner