Polymers involving cyclodextrin moieties present the following categories:
1.Cross-linked polymer. Cyclodextrin is part of polymer structure, such as epichlorohydrin cross-linked cyclodextrin.
2.Linear polymer. Cyclodextrin hung outside the polymer chain, such as acryloyl cyclodextrin polymer.
3.Cyclodextrin grafted polymer. Cyclodextrin is grafted to the polymer end, such as cyclodexdrin grafed poly lactic acid.
4.Polypseudorotaxane and polyrotaxane. Linear polymers cross cyclodextrin cavities as pearl necklace.
5.Self-assembled supramolecular polymer. This polymer is made of non-covalent interactions between the monomer units.
Category 4, 5 are the research frontiers of supramolecular chemistry.Category 1,2,3 as new materials that have hydrophilic and molecular complexablity by introducing cyclodextrins to traditional ploymers have great future: First, one application is in the establishment of economic separation system, such as membrane based on cyclodextrin. Second, cross-linked polymers with cavities form comprehensive adsorption networks. Third, cyclodextrin modified natural or synthetic fibers show significant improvements in hydrophilic and electrostatic properties. Fourth, organic molecules can be selectively captured for cleaning environment, such as fragrant resin and deodorizing resin.Storage |
