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3‐Ethylated N ‐Vinyl‐2‐pyrrolidone with LCST Properties in Water
Author(s) -
Trellenkamp Taina,
Ritter Helmut
Publication year - 2009
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.200900250
Subject(s) - lower critical solution temperature , 2 pyrrolidone , copolymer , polymer chemistry , monomer , polymer , materials science , chemistry , composite material
The monomer 3‐ethyl‐1‐vinyl‐2‐pyrrolidone ( 3 ) and the homopolymer poly(3‐ethyl‐1‐vinyl‐2‐pyrrolidone) ( 5 ) have been synthesized. Polymer 5 is soluble in water and shows a critical temperature ( T c ) of 27 °C. The presence of cyclodextrin causes a slight shift of the T c . The lower critical solution temperature (LCST) could be varied between 27 and 40 °C by copolymerization with N ‐vinyl‐2‐pyrrolidone. A linear correlation between the T c and the copolymer composition is observed.