Relationships between the material properties of silicone hydrogels: Desiccation, wettability and lubricity.

ABSTRACT: Silicone hydrogels (SiHy), represent composite matrices composed of hydrophobic gas permeable silicone (Si) rich core and a surface enriched with hydrophilic polymer moieties. Their utilization in contact lens design requires number of SiHy properties (hydration, wettability, lubricity) to be optimized for the challenging conditions at the ocular surface. Typical limitations in literature are that (i) these properties are studied in isolation, monitoring only one parameter but not the rest of them, and (ii) measurements are performed with hydrated samples immediately after removal from storage solutions. Here we study the simultaneous evolution of critical material properties (evaporative loss of water, water contact angle, coefficient of friction) of different SiHy subjected to continuous

SUBMITTER: Eftimov PB 

PROVIDER: S-EPMC7917563 | biostudies-literature | 2021 Mar

REPOSITORIES: biostudies-literature