Stabilization of Hydrogen-Bonded Poly(N-isopropylacrylamide) Multilayers by a Dual Electrostatic/Hydrogen Bonding Copolymer

John F. Quinn; Frank Caruso

doi:10.1071/CH05052

RESEARCH ARTICLE

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Stabilization of Hydrogen-Bonded Poly(N-isopropylacrylamide) Multilayers by a Dual Electrostatic/Hydrogen Bonding Copolymer

John F. Quinn ^A and Frank Caruso ^A ^B

+ Author Affiliations

- Author Affiliations

^A Centre for Nanoscience and Nanotechnology, Department of Chemical and Biomolecular Engineering, University of Melbourne, Melbourne VIC 3010, Australia.

^B Corresponding author. Email: fcaruso@unimelb.edu.au

Australian Journal of Chemistry 58(6) 442-446 https://doi.org/10.1071/CH05052
Submitted: 24 February 2005 Accepted: 6 April 2005 Published: 14 June 2005

Abstract

Multilayer thin films were prepared based on hydrogen bonding between poly(N-isopropylacrylamide) (PNiPAAm), and poly(styrene sulfonate-co-maleic acid) (PSSMA). Since PSSMA is capable of associating with other polymers through both hydrogen bonding and electrostatic interactions, multilayer assemblies incorporating PSSMA, PNiPAAm, and intercalated poly(allylamine hydrochloride) (PAH) layers were also prepared. Intercalated PAH layers were included to improve the pH stability of the film by introducing electrostatic linkages into the assembly. Film construction was studied as a function of pH of the deposition solution and the number of inserted PAH layers. Film morphology varied significantly with incorporation of PAH into the film. It was also demonstrated that by intercalating several PAH layers within the PNiPAAm/PSSMA assembly, the pH stability of the films at pH 5.8 could be substantially improved.

The authors gratefully acknowledge Q. Li for SFM analysis. This work was supported by the Australian Research Council (under the Discovery Project and Federation Fellowship schemes) and by the Victorian State Government STI Initiative. Access to equipment through the Particulate Fluids Processing Centre is acknowledged.

References

Stabilization of Hydrogen-Bonded Poly(N-isopropylacrylamide) Multilayers by a Dual Electrostatic/Hydrogen Bonding Copolymer

Abstract

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