Lower Critical Solution Temperature Properties of  N ‐Isopropylacrylamide‐Based Pseudopolyrotaxanes by Complexation with Cucurbituril[6] | Zendy

Choi Soo Whan | Zendy; Ritter Helmut | Zendy

Premium

Lower Critical Solution Temperature Properties of N ‐Isopropylacrylamide‐Based Pseudopolyrotaxanes by Complexation with Cucurbituril[6]

Author(s) -

Choi Soo Whan,

Ritter Helmut

Publication year - 2007

Publication title -

macromolecular rapid communications

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.348

H-Index - 154

eISSN - 1521-3927

pISSN - 1022-1336

DOI - 10.1002/marc.200600600

Subject(s) - poly(n isopropylacrylamide) , copolymer , polymer chemistry , monomer , cucurbituril , aqueous solution , lower critical solution temperature , thermal stability , polymer , materials science , polymerization , radical initiator , radical polymerization , chemical engineering , chemistry , supramolecular chemistry , organic chemistry , composite material , molecule , engineering

Pseudopolyrotaxanes 4a and 5a are synthesized by two paths: a) directly from the pseudorotaxane, and b) by complexing with cucurbituril (CB[6]) in water at room temperature after the polymerization. Free radical copolymerization with CB[6] (un)complexed monomer and N ‐isopropylacrylamide (NIPAAM) is carried out using a redox initiator in aqueous media at room temperature. The properties of pesudorotaxanes ( 4a and 5a ) and polymers ( 4 and 5 ) are investigated by TGA, DSC, and turbidity measurements. The lower critical solution temperatures of the NIPAAM‐containing copolymers and CB[6] are significantly higher than those of pure NIPAAM copolymers. The pseudopolyrotaxanes 4a and 5a have a higher thermal stability, as a result of threading of the CB[6] rings onto the polymer side groups.

This content is not available in your region!

Continue researching here.

Having issues? You can contact us here

Accelerating Research