Journal
JOURNAL OF COLLOID AND INTERFACE SCIENCE
Volume 348, Issue 2, Pages 673-674Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2010.05.034
Keywords
PNIPAM LCST hydrophobicity
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PNIPAM chains have hydrophobic and hydrophilic domains below and above the LCST. Temperature dependent interactions between PNIPAM and solutes arise because of changes in the local environment around the hydrophobic isopropyl domains. Below the LCST the isopropyl groups are surrounded by water, whereas above the LCST the hydrophobic groups are in contact with both water and polymer segments. Contrary to numerous claims in the literature, PNIPAM is not a hydrophobic material at temperatures above the LCST. (C) 2010 Elsevier Inc. All rights reserved.
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