Hydrophilic surface modification of Poly (dimethylsiloxane) (PDMS) by non-covalent immobilization method

A method of altering the surface of Polydimethylsiloxane (PDMS) to make it hydrophilic was developed by Utah State University and is available for licensing. Polydimethylsiloxane (PDMS) is an inert non-toxic silicon-based polymer that is used in applications ranging from medical devices (prosthesis, contact lenses, etc) to electrical insulators, anti-foaming agents and other products. Each of these applications is a multi-billion dollar market in which PDMS plays a significant role. The hydrophobic nature of PDMS is an undesirable property for microfluidic devices, biomedical uses, and sensor applications. A variety of strategies have been developed to render the PDMS surface hydrophilic, which include exposure to oxygen plasma, ozone, corona discharge, and ultraviolet light. Utah State University?s PDMS technology is a simple and cost-efficient method to create hydrophilic PDMS surfaces by polymer addition chemistry, compared to currently used methods that are both costly and time consuming.

  • Artificial organs, skin, and prosthetics
  • Membranes and contact lenses
  • Drug delivery systems
  • High-performance microfluidic devices

Control and flexibility in tailoring material properties such as:

  • Solubility and stability
  • Degree of transparency
  • Simple, quick procedure
  • Non-capital intensive process


US 8,053,548

Patent Information:
For Information, Contact:
Christian Iverson
Utah State University
Harshil Dhruv David Britt
Circuits and Systems