Preparation and Characterization of Poly Dimethylsiloxane Based on Polyurethane Hydrogels with Interpenetrating Network Structure for Contact Lenses Uses
Helaly, F., El Sawy, S., Hashem, A., Mourad, R. (2018). Preparation and Characterization of Poly Dimethylsiloxane Based on Polyurethane Hydrogels with Interpenetrating Network Structure for Contact Lenses Uses. EKB Journal Management System, 61(1), 61-74. doi: 10.21608/ejchem.2018.2121.1170
Fahima M Helaly; Sanaa El Sawy; Ahmad Hashem; Reda Mourad. "Preparation and Characterization of Poly Dimethylsiloxane Based on Polyurethane Hydrogels with Interpenetrating Network Structure for Contact Lenses Uses". EKB Journal Management System, 61, 1, 2018, 61-74. doi: 10.21608/ejchem.2018.2121.1170
Helaly, F., El Sawy, S., Hashem, A., Mourad, R. (2018). 'Preparation and Characterization of Poly Dimethylsiloxane Based on Polyurethane Hydrogels with Interpenetrating Network Structure for Contact Lenses Uses', EKB Journal Management System, 61(1), pp. 61-74. doi: 10.21608/ejchem.2018.2121.1170
Helaly, F., El Sawy, S., Hashem, A., Mourad, R. Preparation and Characterization of Poly Dimethylsiloxane Based on Polyurethane Hydrogels with Interpenetrating Network Structure for Contact Lenses Uses. EKB Journal Management System, 2018; 61(1): 61-74. doi: 10.21608/ejchem.2018.2121.1170

Preparation and Characterization of Poly Dimethylsiloxane Based on Polyurethane Hydrogels with Interpenetrating Network Structure for Contact Lenses Uses

Egyptian Journal of Chemistry
Article 6, Volume 61, Issue 1, January and February 2018, Page 61-74  XML PDF (1.08 MB)
Document Type: Original Article
DOI: 10.21608/ejchem.2018.2121.1170
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Authors
Fahima M Helalyorcid 1; Sanaa El Sawy2; Ahmad Hashemorcid 3; Reda Mourad email 4
1Polymers and Pigment, National Research Centre, Cairo
2Polymers and Pigments, National Research Centre, Giza, Egypt
3Chemistry Dept, Science Faculty, Ain Shams Univ,
4Polymer and Pigments Dept., Chemical Industries Div., National Research Centre, Giza, Egypt
Abstract
The interpenetrating polymer network (IPN) silicone hydrogels have been synthesized using polydimethylsiloxane- polyurethane- polyethylene glycol methacrylate (PDMS–PU–PEGMA) prepolymer with different concentrations of N,N dimethyl acrylamide (DMA), polyethylene glycol methacrylate (PEGMA) and methacryloxypropyl tris(trimethylsoloxy)silane (TRIS) by UV initiated polymerization process in the presence of free radical photoinitiator. The physicomechanical and chemical properties of the IPN silicone hydrogels, as water content, protein resistance, contact angle, optical transparency and mechanical properties were evaluated. The results revealed that DMA and PEGMA incorporated in IPN silicone hydrogel improves the hydrophilicity of silicone hydrogel with higher optical transparency and better protein resistance ability. The moduli of IPN silicone hydrogels indicate stiffer network as the concentration of PDMS–PU–PEGMA prepolymer increased. IPN silicone hydrogels belong to hydrophilic surfaces with the lowest water contact angle of 48.76o.
Keywords
Interpenetrating polymer network; silicone hydrogels; polydimethylsiloxane- polyurethane; contact lenses
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