Lacunarity properties of nanophotonic materials based on poly(methyl methacrylate) for contact lenses
Апстракт
The aim was to develop new materials that would, after appropriate machining processes, improve the surface roughness and wettability of contact lenses. The samples used in this investigation were standard rigid gas-permeable (RGP) SOLEKO contact lenses, made of poly-MMA-co-siloxy silane methacrylate material (known under the commercial name SP40 (TM)), and its modifications by adding three nanomaterials: fullerene C-60 (designated as SP40-A), fullerol C-60(OH)(24) (designated as SP40-B) and methformin hydroxylate fullerene C-60(OH)(12)(OC4N5H10)(12) (designated as SP40-C). Both atomic force microscopy (AFM) and magnetic force microscopy (MFM) were used to measure the topography and gradient of the magnetic field of the nanophotonic materials and the reference samples. According to the magnetic properties of all the materials yielded by MFM it can be concluded that adding fullerene and its derivatives certainly reduces the spectrum of the phase shifts angle by almost 50 %, which increa...ses the paramagnetic characteristics of the nanophotonic material. The positive result of nanophotonic materials characterization is the fact that the roughness parameter values for all of these materials, are lower than those for the basic material. A surface lacunarity analysis, based on in-house procedures for determining the lacunarity value of contact lens surfaces, confirms the influence of surface topology on the tear film volume distribution and, consequently, the contact lens' surface lubrication. The presence of carbon nanomaterials, according to the surface roughness parameters, are improved for rigid gas-permeable (RGP) contact lenses made from nanophotonic polymer materials compared to those produced from the basic material.
Кључне речи:
surface roughness / polymer materials / magnetic force microscopy / fullerenes / atomic force microscopyИзвор:
Materiali in Tehnologije, 2017, 51, 1, 145-151Издавач:
- Inst Za Kovinske Materiale I In Tehnologie, Ljubjana
Финансирање / пројекти:
- Функционализација наноматеријала за добијање нове врсте контактних сочива и рану детекцију дијабетеса (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45009)
DOI: 10.17222/mit.2016.014
ISSN: 1580-2949
WoS: 000396592900023
Scopus: 2-s2.0-85027410461
Колекције
Институција/група
Mašinski fakultetTY - JOUR AU - Tomić, Marija AU - Bojović, Božica AU - Stamenković, Dragomir AU - Mileusnić, Ivana AU - Koruga, Đuro PY - 2017 UR - https://machinery.mas.bg.ac.rs/handle/123456789/2613 AB - The aim was to develop new materials that would, after appropriate machining processes, improve the surface roughness and wettability of contact lenses. The samples used in this investigation were standard rigid gas-permeable (RGP) SOLEKO contact lenses, made of poly-MMA-co-siloxy silane methacrylate material (known under the commercial name SP40 (TM)), and its modifications by adding three nanomaterials: fullerene C-60 (designated as SP40-A), fullerol C-60(OH)(24) (designated as SP40-B) and methformin hydroxylate fullerene C-60(OH)(12)(OC4N5H10)(12) (designated as SP40-C). Both atomic force microscopy (AFM) and magnetic force microscopy (MFM) were used to measure the topography and gradient of the magnetic field of the nanophotonic materials and the reference samples. According to the magnetic properties of all the materials yielded by MFM it can be concluded that adding fullerene and its derivatives certainly reduces the spectrum of the phase shifts angle by almost 50 %, which increases the paramagnetic characteristics of the nanophotonic material. The positive result of nanophotonic materials characterization is the fact that the roughness parameter values for all of these materials, are lower than those for the basic material. A surface lacunarity analysis, based on in-house procedures for determining the lacunarity value of contact lens surfaces, confirms the influence of surface topology on the tear film volume distribution and, consequently, the contact lens' surface lubrication. The presence of carbon nanomaterials, according to the surface roughness parameters, are improved for rigid gas-permeable (RGP) contact lenses made from nanophotonic polymer materials compared to those produced from the basic material. PB - Inst Za Kovinske Materiale I In Tehnologie, Ljubjana T2 - Materiali in Tehnologije T1 - Lacunarity properties of nanophotonic materials based on poly(methyl methacrylate) for contact lenses EP - 151 IS - 1 SP - 145 VL - 51 DO - 10.17222/mit.2016.014 ER -
@article{ author = "Tomić, Marija and Bojović, Božica and Stamenković, Dragomir and Mileusnić, Ivana and Koruga, Đuro", year = "2017", abstract = "The aim was to develop new materials that would, after appropriate machining processes, improve the surface roughness and wettability of contact lenses. The samples used in this investigation were standard rigid gas-permeable (RGP) SOLEKO contact lenses, made of poly-MMA-co-siloxy silane methacrylate material (known under the commercial name SP40 (TM)), and its modifications by adding three nanomaterials: fullerene C-60 (designated as SP40-A), fullerol C-60(OH)(24) (designated as SP40-B) and methformin hydroxylate fullerene C-60(OH)(12)(OC4N5H10)(12) (designated as SP40-C). Both atomic force microscopy (AFM) and magnetic force microscopy (MFM) were used to measure the topography and gradient of the magnetic field of the nanophotonic materials and the reference samples. According to the magnetic properties of all the materials yielded by MFM it can be concluded that adding fullerene and its derivatives certainly reduces the spectrum of the phase shifts angle by almost 50 %, which increases the paramagnetic characteristics of the nanophotonic material. The positive result of nanophotonic materials characterization is the fact that the roughness parameter values for all of these materials, are lower than those for the basic material. A surface lacunarity analysis, based on in-house procedures for determining the lacunarity value of contact lens surfaces, confirms the influence of surface topology on the tear film volume distribution and, consequently, the contact lens' surface lubrication. The presence of carbon nanomaterials, according to the surface roughness parameters, are improved for rigid gas-permeable (RGP) contact lenses made from nanophotonic polymer materials compared to those produced from the basic material.", publisher = "Inst Za Kovinske Materiale I In Tehnologie, Ljubjana", journal = "Materiali in Tehnologije", title = "Lacunarity properties of nanophotonic materials based on poly(methyl methacrylate) for contact lenses", pages = "151-145", number = "1", volume = "51", doi = "10.17222/mit.2016.014" }
Tomić, M., Bojović, B., Stamenković, D., Mileusnić, I.,& Koruga, Đ.. (2017). Lacunarity properties of nanophotonic materials based on poly(methyl methacrylate) for contact lenses. in Materiali in Tehnologije Inst Za Kovinske Materiale I In Tehnologie, Ljubjana., 51(1), 145-151. https://doi.org/10.17222/mit.2016.014
Tomić M, Bojović B, Stamenković D, Mileusnić I, Koruga Đ. Lacunarity properties of nanophotonic materials based on poly(methyl methacrylate) for contact lenses. in Materiali in Tehnologije. 2017;51(1):145-151. doi:10.17222/mit.2016.014 .
Tomić, Marija, Bojović, Božica, Stamenković, Dragomir, Mileusnić, Ivana, Koruga, Đuro, "Lacunarity properties of nanophotonic materials based on poly(methyl methacrylate) for contact lenses" in Materiali in Tehnologije, 51, no. 1 (2017):145-151, https://doi.org/10.17222/mit.2016.014 . .