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Self-restoring polymer brushes under tribological stress and the biomedical applications

Published online by Cambridge University Press:  16 May 2016

Troels Røn ,
Irakli Javakhishvili ,
Søren Hvilsted ,
Katja Jankova  and
Seunghwan Lee
Troels Røn
Affiliation:
Department of Mechanical Engineering, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark
Irakli Javakhishvili
Affiliation:
Danish Polymer Centre, Department of Chemical and Biochemical Engineering, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark
Søren Hvilsted
Affiliation:
Danish Polymer Centre, Department of Chemical and Biochemical Engineering, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark
Katja Jankova
Affiliation:
Danish Polymer Centre, Department of Chemical and Biochemical Engineering, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark
Seunghwan Lee*
Affiliation:
Department of Mechanical Engineering, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark
*
*(Email: seele@mek.dtu.dk)
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Abstract

For biological and mechanical systems involving moving parts, surface slipperiness is often a critical attribute for their optimal functions. Surface grafting with hydrophilic polymers is a powerful means to render materials slippery in aqueous environment. In “inverted grafting-to approach”, the hydrophilic polymer chains of amphiphilic diblock copolymers dispersed within a poly(dimethylsiloxane) (PDMS) network are selectively segregated upon exposure to aqueous solution. This allows formation of extremely stable brush-like polymer layers. Tribological application of inverted grafting-to approach was successfully demonstrated with PDMS-block-poly(acrylic acid) (PDMS-b-PAA) dispersed within thin PDMS films on PDMS blocks by showing friction coefficients (µ) of ca 10-2 to 10-3, depending on the load, pH and buffer salinity in the absence of other external re-supply of PAA chains. Further manipulations of the thin PDMS film incorporating PDMS-b-PAA to optimize the tribological properties are presented. Lastly, first trials to employ PAA-grafted PDMS surface to generate in-vitro mucosae model are also presented and discussed.

Keywords

polymersurface chemistrybiomedical
Type
Articles
Information
MRS Advances , Volume 1 , Issue 27: Biomaterials and Soft Materials , 2016 , pp. 1971 - 1976
Copyright
Copyright © Materials Research Society 2016 

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References

REFERENCES

Advincula, R. C., Brittain, W. J., Caster, K. C. and Ruhe, J., Polymer brushes: Synthesis, characterization, applications, (Wiley-VCH Verlag GmbH & Co. KGaA, 2004).Google Scholar
Klein, J., Friction 1, 1 (2013).CrossRefGoogle Scholar
Røn, T., Javakhishvili, I., Hvilsted, S., Jankova, K. and Lee, S., Adv. Mater. Interf. 3, 1500472 (2016).Google Scholar
Inutsuka, M., Yamada, N. L., Ito, K. and Yokoyama, H., ACS Macro Lett. 2, 265 (2013).Google Scholar
Chawla, K., Lee, S., Lee, B. P., Dalsin, J. L., Messersmith, P. B. and Spencer, N. D., J. Biomed. Mater. Res. A 90, 742 (2008).Google Scholar
Heeb, R., Bielecki, R. M., Lee, S. and Spencer, N. D., Macromolecules 42, 9124 (2009).CrossRefGoogle Scholar
Lego, B., Skene, W. G. and Giasson, S., Macromolecules 43, 4384 (2010).Google Scholar
Lee, S., Heuberger, M., Rousset, P. and Spencer, N. D., Tribol. Lett. 16, 239 (2004).Google Scholar