Polyhedral Oligomeric Silsesquioxane Based Silicone Ophthalmic Contact Lens Material Containing Neodymium Nanoparticles

2021 ◽  
Vol 21 (9) ◽  
pp. 4625-4631
Author(s):  
Min-Jae Lee ◽  
A-Young Sung
Keyword(s):  
Ethylene Glycol ◽  
Physical Properties ◽  
Contact Lens ◽  
Oxygen Permeability ◽  
Polyhedral Oligomeric Silsesquioxane ◽  
Cross Linking ◽  
Synergy Effect ◽  
Glycol Dimethacrylate ◽  
Oligomeric Silsesquioxane ◽  
Lens Material

This research was conducted to analyze the compatibility of used monomers and produce the high functional POSS-based ophthalmic polymer containing silicone monomers and neodymium nanoparticle. Synthesized silicone polymer (SiD), trimethylsilylmethacrylate (TSMA), N-vinyl-2-pyrrolidone (NVP) and neodymium nanoparticles were used as additives for the basic combination of polyhedral oligomeric silsesquioxane (POSS), and methyl methacrylate (DMA). And also, the materials were copolymerized with ethylene glycol dimethacrylate (EGDMA) as the cross-linking agent, azobisisobutyronitrile (AIBN) as the initiator. It is judged that the POSS-co-NVP polymer is optically good and thus have good compatibility. Especially copolymerization with TSMA showed high oxygen permeability, but with SID considered to be more stable judging by lens shape. Physical properties shows that the neodymium nanoparticle increases the wettability while maintaining water content. These materials are considered to make synergy effect each other, so it can be used in functional hydrogel ophthalmic lenses.

Characterization and Compatibility of High Oxygen Permeable Ophthalmic Biomaterial Containing Silane with Cobalt Oxide Nanoparticles

2020 ◽  
Vol 20 (11) ◽  
pp. 6954-6958
Author(s):  
Min-Jae Lee ◽  
A.-Young Sung
Keyword(s):  
Cobalt Oxide ◽  
Oxygen Permeability ◽  
Cobalt Nanoparticles ◽  
Cross Linking ◽  
Oxide Nanoparticles ◽  
Synergy Effect ◽  
Glycol Dimethacrylate ◽  
Cobalt Oxide Nanoparticles ◽  
Photo Polymerization ◽  
Oxide Nanoparticle

This research is conducted to analyze the compatibility of used monomers and produce the high functional hydrogel ophthalmic polymer containing silane and nanoparticles. Vinyltrimethoxysilane (VTMS) and cobalt oxide nanoparticles are used as additives for the basic combination of silicone monomer (Sil-H) and methyl methacrylate (MMA). And also, the materials are copolymerized with ethylene glycol dimethacrylate (EGDMA) as the cross-linking agent, photo polymerization initiator (2H2M) as the initiator. It is judged that the lenses of all combinations are optically excellent and thus have good compatibility. Measurement of the optical and physical characteristics of the manufactured hydrophilic ophthalmic polymer are different in each case. Especially VTMS with cobalt oxide nanoparticle increases the oxygen permeability by the addition of cobalt nanoparticles. These materials are considered to make synergy effect each other, so it can be used in functional hydrogel ophthalmic lenses.

Optimum Infinite is a new era of oxygen permeability material for contact lenses

The Eye ◽  
2020 ◽  
Vol 22 (129) ◽  
pp. 44-46
Author(s):  
Mark Eddleston
Keyword(s):  
Contact Lens ◽  
Oxygen Permeability ◽  
Contact Lenses ◽  
New Era ◽  
Lens Material ◽  
Insight Into

Optimum Infinite is a new GP contact lens material, with an oxygen permeability of 180 barrer and was launched by Contamac at the GSLS 2019. This article provides an insight into the development and characteristics of this breakthrough material.

Copolymerization of Acrylic Monomers and Silane Group Containing Titanium Carbide Nanoparticles for Application to Ophthalmic Lens Materials

2021 ◽  
Vol 21 (8) ◽  
pp. 4388-4393
Author(s):  
Min-Jae Lee ◽  
A-Young Sung
Keyword(s):  
Ethylene Glycol ◽  
Titanium Carbide ◽  
Oxygen Permeability ◽  
Synergy Effect ◽  
Poly Ethylene Glycol ◽  
Propyl Methacrylate ◽  
Acrylic Monomers ◽  
Wetting Agents ◽  
Poly Ethylene ◽  
Glycol Methyl Ether

This research was conducted to synthesis and application for high oxygen permeable ophthalmic lens materials. 2-(Trimethylsiloxy)ethyl methacrylate (2T), 3-[Tris(trimethylsiloxy)silyl]propyl methacrylate (3T), [(1,1-Dimethyl-2-propynyl)oxy]trimethylsilane (TMS), Poly(ethylene glycol) methyl ether methacrylate (PEGMA), N-vinyl-2-pyrrolidone (NVP) and titanium carbide nanoparticles were used as additives for the basic combination of synthesized silicone monomer (SiD) and N,N-Dimethylacetamide (DMA). And also, the materials were copolymerized with ethylene glycol dimethacrylate (EGDMA) as the cross-linking agent, azobisisobutyronitrile (AIBN) as the initiator. The copolymerization with a small amount of silane of about 1% increased the oxygen permeability to 30.3˜33.52(cm2/sec)·(mlO2/ml·mm Hg)·10−11, and in particular, the addition of titanium carbide nanoparticles was found to increase to 46.38 (cm2/sec)·(ml O2/ml·mm Hg)·10−11. Surface modification was possible with various wetting agents. Especially, simultaneous use with titanium carbide nanoparticles increased the wettability while maintaining water content. These materials are considered to make synergy effect each other, so it can be used in functional hydrogel ophthalmic lenses.

Free-radical cross-linking copolymerization of methyl methacrylate and ethylene glycol dimethacrylate in the presence of trimethoxyvinylsilane

2008 ◽  
Vol 69 (4) ◽  
pp. 992-999 ◽  
Author(s):  
Hamid Javaherian Naghash ◽  
Sanaz Abbasi Dineh Kabudi ◽  
Ahmad Reza Momeni ◽  
Ahmad Reza Massah ◽  
Hamid Aliyan
Keyword(s):  
Free Radical ◽  
Ethylene Glycol ◽  
Methyl Methacrylate ◽  
Ethylene Glycol Dimethacrylate ◽  
Cross Linking ◽  
Glycol Dimethacrylate

scholarly journals A simple approach to hybrid inorganic–organic step-growth hydrogels with scalable control of physicochemical properties and biodegradability

2015 ◽  
Vol 6 (12) ◽  
pp. 2183-2187 ◽  
Author(s):  
F. Alves ◽  
I. Nischang
Keyword(s):  
Ethylene Glycol ◽  
Physicochemical Properties ◽  
Polyhedral Oligomeric Silsesquioxane ◽  
Simple Approach ◽  
Poly Ethylene Glycol ◽  
Step Growth ◽  
Poly Ethylene ◽  
Oligomeric Silsesquioxane

We prepared new and scalable, hybrid inorganic–organic step-growth hydrogels with polyhedral oligomeric silsesquioxane (POSS) network knot construction elements and hydrolytically degradable poly(ethylene glycol) (PEG) di-ester macromonomers by in situ radical-mediated thiol–ene photopolymerization.

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