Abstract:
:The fracture toughness of three polymethacrylate contact lens hydrogel materials was measured using the method of Generalized Fracture Mechanics. One hydrogel (SNOFLEX S68) had a significantly higher fracture energy per unit area (Jc) than the others, probably because it undergoes plastic deformation at high strains. Differences in toughness imply differences in the mechanical durability of the contact lenses in normal use, which could not be so readily deduced from the results of tensile strength tests.
journal_name
Biomaterialsjournal_title
Biomaterialsauthors
Jackson APdoi
10.1016/0142-9612(90)90095-8subject
Has Abstractpub_date
1990-08-01 00:00:00pages
403-7issue
6eissn
0142-9612issn
1878-5905pii
0142-9612(90)90095-8journal_volume
11pub_type
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