期刊
MACROMOLECULAR RAPID COMMUNICATIONS
卷 25, 期 14, 页码 1330-1334出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/marc.200400062
关键词
block copolymers; infrared spectroscopy; micelles; stimuli-sensitive polymers; thermal properties
Thermosensitive association of a diblock co-polymer consisting of poly(3 dimethyl(methacryloxyethyl) ammonium propane sulfonate) (PdMMAEAPS), as an upper critical solution temperature (UCST) block, and poly(N,N'-diethylacrylamide) (PdEA), as a lower critical solution temperature (LCST) block has been investigated by using IR spectroscopy. The v(C=O) and v(SO(3)) bands of the PdMMAEARS block and the amide I band of PdEA block critically changed at the UCST and LCST respectively indicating that the segmental interaction of each block is altered at each transition. The double temperatures responsiveness of a UCST block and LCST block containing diblock copolymer Micelles from at temperatures both below the UCST and above the LCST of the blocks.
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