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Amphipathic polymers with stimuli‐responsive microdomains for water remediation: Binding studies with p ‐cresol
Author(s) -
Richardson Michael F.,
Armentrout R. Scott,
McCormick Charles L.
Publication year - 1999
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/(sici)1097-4628(19991128)74:9<2290::aid-app19>3.0.co;2-u
Subject(s) - amphiphile , micelle , polymer , polymer chemistry , chemical engineering , copolymer , ionic strength , pulmonary surfactant , ultrafiltration (renal) , hydrophobic effect , chemistry , materials science , organic chemistry , aqueous solution , chromatography , engineering
Abstract Amphipathic, stimuli‐responsive water‐soluble polymers have been investigated as potential remediation agents for micellar enhanced ultrafiltration (MEUF). The systems represent divergent architectural types, a triblock ABA copolymer of PEO‐PPO‐PEO, an n ‐octylamide modified poly(sodium maleate‐ alt ‐ethyl vinyl ether), and the transport protein, bovine serum albumin. Each type exhibits stimuli‐dependent microphase separation or domain formation in response to temperature, pH, and/or ionic strength changes. Segmental associations result in hydrophobic clusters resembling those present in small molecule surfactant micelles. The effects of such segmental aggregation on sequestration of a model hydrophobic foulant, p ‐cresol, have been investigated using equilibrium dialysis. The favorable molar binding values, the large hydrodynamic dimensions of the stable polymer aggregates, and potential reversibility of foulant loading could have commercial utility in high flow rate, multiple‐pass remediation processes. © 1999 John Wiley & Sons, Inc. J Appl Polym Sci 74: 2290–2300, 1999