Development of techniques to compare mechanical properties of reversible hydrogels with spherical, square columnar and ocular lens geometry

摘要: Abstract We have developed a new experimental technique for determining the elastic modulus of ocular lens by using hydrogel phantoms. successfully prepared disulfide-reversible polyacrylamide hydrogels in forms square column, sphere, and lens. The Mn (number average molecular weight) reduced copolymer ranged from 696,800 to 870,900 Da. physical swelling properties gels were independent shape. Mc (molecular weight between cross-links) 1776 1887 compared with theoretical 1638 Da. exhibited non-linear rubber elasticity, but at low strains moduli (E) 4680±150, 5010±280, 4870±220 Pa lens, respectively. shear (G) was 1531±70 Pa an E/G ratio approximately 3:1, indicating incompressible gel strains. At high (∼15%) Mooney–Rivlin plot linear magnitude 2C1 1515 Pa, which comparable gels. Finally, Tatara mechanical model large deformation spheres applied extract obtained this consistent column sphere. will be used determine