Studies on Development of Polymeric Materials Using Gamma Irradiation for Contact and Intraocular Lenses
Joint Authors
Gupta, Ruchi
Tyagi, Mukti
Sabharwal, S.
Chhabra, Pranshu
Suri, Gunjan
Niyogi, U. K.
Seshadri, Geetha
Khandal, Rakesh Kumar
Source
International Journal of Polymer Science
Issue
Vol. 2009, Issue 2009 (31 Dec. 2009), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2009-12-06
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
For the development of materials for contact lenses and intraocular lenses, the selection criteria is based on the (i) capacity to absorb and retain water, (ii) hydrophilicity and hydrophobicity, (iii) refractive index and (iv) hardness besides the other essential properties.
Various monomers are being studied to develop suitable materials for such applications.
Selection of suitable monomers that can be converted into optical materials of desired characteristics is the most essential step.
In the present paper, an attempt has been made to develop suitable optical polymers based on 2-hydroxy ethyl methacrylate (HEMA), N-vinyl pyrrolidone (NVP), methyl methacrylate (MMA), methacrylic acid (MAA), and styrene.
Compositions were prepared in such a way that polymers of varying hydrophilicity or hydrophobicity could be obtained keeping HEMA as the base (main) monomer.
For polymerization, gamma irradiation (Co-60 as a source) was used.
The results of the study showed that: (i) an increase in NVP and MAA content brought in an increase in hydrophilicity of polymerized HEMA (pHEMA), while the addition of styrene and MMA decreased hydrophilicity of polymerized HEMA (pHEMA), (ii) polymers for contact lenses with water retention capacity as high as >50 wt.% and as low as <10 wt% with varying content of suitable comonomers can be designed, (iii) polymeric materials for contact lenses can be made by using radiation processing such as Co-60 and (iv) a dose of 40 kGy was found to be ideal for purpose.
American Psychological Association (APA)
Chhabra, Pranshu& Gupta, Ruchi& Suri, Gunjan& Tyagi, Mukti& Seshadri, Geetha& Sabharwal, S.…[et al.]. 2009. Studies on Development of Polymeric Materials Using Gamma Irradiation for Contact and Intraocular Lenses. International Journal of Polymer Science،Vol. 2009, no. 2009, pp.1-9.
https://search.emarefa.net/detail/BIM-507060
Modern Language Association (MLA)
Chhabra, Pranshu…[et al.]. Studies on Development of Polymeric Materials Using Gamma Irradiation for Contact and Intraocular Lenses. International Journal of Polymer Science No. 2009 (2009), pp.1-9.
https://search.emarefa.net/detail/BIM-507060
American Medical Association (AMA)
Chhabra, Pranshu& Gupta, Ruchi& Suri, Gunjan& Tyagi, Mukti& Seshadri, Geetha& Sabharwal, S.…[et al.]. Studies on Development of Polymeric Materials Using Gamma Irradiation for Contact and Intraocular Lenses. International Journal of Polymer Science. 2009. Vol. 2009, no. 2009, pp.1-9.
https://search.emarefa.net/detail/BIM-507060
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-507060