Poly(vinyl alcohol) Hydrogels Reinforced with Nanocellulose for Ophthalmic Applications: General Characteristics and Optical Properties

J Phys Chem B. 2016 Dec 29;120(51):13094-13101. doi: 10.1021/acs.jpcb.6b10650. Epub 2016 Dec 14.

Abstract

Globally, uncorrected refractive errors are one of the main causes of visual impairment, and contact lenses form an important part of modern day eye care and culture. Several hydrogels with varying physicochemical properties are in use to manufacture soft contact lenses. Hydrogels are generally too soft and reinforcement with appropriate materials is desirable to achieve high water content without compromising mechanical properties. In this study, we have developed a highly transparent macroporous hydrogel with water content >90%, by combining poly(vinyl alcohol) with nanocellulose. Furthermore, the results show that the composite hydrogel has refractive index close to that of water and very good UV-blocking properties.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Biocompatible Materials / chemistry*
  • Cellulose / chemistry*
  • Contact Lenses
  • Elasticity
  • Humans
  • Hydrogels / chemistry*
  • Materials Testing
  • Polyvinyl Alcohol / chemistry*
  • Refractometry

Substances

  • Biocompatible Materials
  • Hydrogels
  • Polyvinyl Alcohol
  • Cellulose
  • microcrystalline cellulose