Title

Amphipathic polymers with stimuli-responsive microdomains for water remediation: Binding studies with p-cresol

Document Type

Article

Publication Date

11-28-2012

Department

Polymers and High Performance Materials

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. (C) 1999 John Wiley & Sons, Inc.

Publication Title

JOURNAL OF APPLIED POLYMER SCIENCE

Volume

74

Issue

9

First Page

2290

Last Page

2300

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