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Evolution of PVA gels prepared without crosslinking agents as a cell adhesive surface

  • Siddhi GuptaEmail author
  • Thomas J. Webster
  • Arvind Sinha
Article

Abstract

Physical parameters (such as crosslinking density, crystallinity and mechanical properties) have been found to largely affect cellular behavior on polymer scaffolds. This study demonstrated that transparent pure Poly (vinyl alcohol) hydrogels prepared via a freeze–thaw method can be made to support cell adhesion by controlling physical parameters such as concentration and the number of freeze–thaw cycles. For a given number of freeze–thaw cycles, (specifically 45), polymer concentration dependent structural and mechanical properties (such as tensile strength and stiffness) were correlated with cell adhesion. The maximum cell attachment occurred on the hydrogels with the greatest mechanical properties, crystallinity and crosslinking density. The hydrogel surfaces were more favorable to human dermal fibroblasts than human lens epithelial cells and retained their transparency as well as dimensional stability with only a small degree of swelling. Fibroblast laden hydrogels showed extensive alkaline phosphatase activity which confirmed their healthy proliferation and function. In this manner, this study suggests that transparent Poly (vinyl alcohol) hydrogels prepared by the freeze thaw method described here should be further studied for numerous tissue engineering applications.

Keywords

Contact Angle Polymer Concentration Malachite Green Human Dermal Fibroblast Crosslinking Density 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgments

The authors acknowledge CSIR network project NWP0035 and IUSSTF (Indo-US Science and Technology Forum) for providing the financial support under the project Biomaterials for Health Care. The authors also acknowledge the Polymer Engineering Department of Birla Institute of Technology, Ranchi for conducting the wettability studies.

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Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  • Siddhi Gupta
    • 1
    Email author
  • Thomas J. Webster
    • 2
  • Arvind Sinha
    • 1
  1. 1.CSIR-National Metallurgical LaboratoryCouncil of Scientific and Industrial ResearchJamshedpurIndia
  2. 2.School of Engineering and Department of OrthopaedicsBrown UniversityRhode IslandUSA

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