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Temperature-Responsive Polymers for Biological Applications

Published online by Cambridge University Press:  01 February 2011

M. Rackaitis  and
E. Manias
M. Rackaitis
Affiliation:
Materials Science & Engineering Departmrnt, 325-D Steidle Building, The Pennsylvania State University, University Park, PA 16802, U.S.A
E. Manias
Affiliation:
Materials Science & Engineering Departmrnt, 325-D Steidle Building, The Pennsylvania State University, University Park, PA 16802, U.S.A
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Abstract

Water soluble polymers with tunable lower critical solution temperature (LCST) are of increasing interest for biological applications such as cell patterning, smart drug release, DNA sequencing etc. The present study addresses control of the polymer temperature response in water by varying chemical composition of the monomer. In order to achieve this a series of polymers were designed and synthesized based on an ethyleneoxide/ethylene monomer (EO/EE). Polymers were synthesized using polycondensation reactions of difunctional m-EO and n-EE oligomers. The cloud point follows linearly the balance of hydrophobic/hydrophilic interaction and can be tailored in the range of 7 – 70°C by varying the m/n composition and polymer type. Polymer grafting onto the silicon surface exhibits similar solubility behaviour. Adhesion energy measurements show that grafted polymers have solubility cloud points at the temperatures that are close to the ones of the bulk polymer solutions.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 785: Symposium D – Materials and Devices for Smart Systems , 2003 , D8.3
Copyright
Copyright © Materials Research Society 2004

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