Utilization of star-shaped polymer architecture in the creation of high-density polymer brush coatings for the prevention of platelet and bacteria adhesion

Masayasu Totani, Tsuyoshi Ando, Kayo Terada, Takaya Terashima, Ill Yong Kim, Chikara Ohtsuki, Chuanwu Xi, Kenichi Kuroda, Masao Tanihara

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)

Abstract

We demonstrate utilization of star-shaped polymers as high-density polymer brush coatings and their effectiveness to inhibit the adhesion of platelets and bacteria. Star polymers consisting of poly(2-hydroxyethyl methacrylate) (PHEMA) and/or poly(methyl methacrylate) (PMMA) were synthesized using living radical polymerization with a ruthenium catalyst. The polymer coatings were prepared by simple drop casting of the polymer solution onto poly(ethylene terephthalate) (PET) surfaces and then dried. Among the star polymers prepared in this study, the PHEMA star polymer (star-PHEMA) and the PHEMA/PMMA (mol. ratio of 71/29) heteroarm star polymer (star-H71M29) coatings showed the highest percentage of inhibition against platelet adhesion (78-88% relative to the non-coated PET surface) and Escherichia coli (94-97%). These coatings also showed anti-adhesion activity against platelets after incubation in Dulbecco's phosphate buffered saline or surfactant solution for 7 days. In addition, the PMMA component of the star polymers increased the scratch resistance of the coating. These results indicate that the star-polymer architecture provides high polymer chain density on PET surfaces to prevent adhesion of platelets and bacteria, as well as coating stability and physical durability to prevent exposure of bare PET surfaces. The star polymers provide a simple and effective approach to preparing anti-adhesion polymer coatings on biomedical materials against the adhesion of platelets and bacteria. This journal is

Original languageEnglish
Pages (from-to)1172-1185
Number of pages14
JournalBiomaterials Science
Volume2
Issue number9
DOIs
Publication statusPublished - Sep 2014
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Biomedical Engineering
  • Materials Science(all)

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