scholarly journals Enhanced UV protection and water adsorption properties of transparent poly(methyl methacrylate) films through incorporation of amorphous magnesium carbonate nanoparticles

2021 ◽  
Vol 28 (8) ◽  
Author(s):  
Jiaojiao Yang ◽  
Junxin Wang ◽  
Maria Strømme ◽  
Ken Welch
Keyword(s):  
Methyl Methacrylate ◽  
Uv Light ◽  
Electronic Devices ◽  
Magnesium Carbonate ◽  
Uv Degradation ◽  
Poly Methyl Methacrylate ◽  
Visible Wavelengths ◽  
Uv C ◽  
Better Than ◽  
Adsorbed Moisture

AbstractA simple solution casting approach was used to obtain transparent and flexible poly(methyl methacrylate) (PMMA) films incorporated with 1 – 4% by weight amorphous magnesium carbonate nanoparticles. Optical transparency was retained in visible wavelengths, while transmittance in the UV-B region was reduced by 22% at 310 nm and 58% at 256 nm with the addition of 4 wt. % nanoparticles. Furthermore, the incorporation of the nanoparticles was shown to provide protection for the films under UV-C irradiation (254 nm wavelength, 5 mW cm−2), with the amount of UV degradation decreasing with increasing concentration of nanoparticles. Films with incorporated nanoparticles were also shown to be able to retain adsorbed moisture much better than neat PMMA films; whereas neat PMMA films did not retain moisture, approximately 50% of the adsorbed moisture was retained in films containing 4 wt. % nanoparticles. These enhanced properties of PMMA are of great interest in applications such as flexible and transparent screens for personal electronic devices that require protection from both UV light and moisture.

scholarly journals Extremely Flexible Indium-Gallium-Zinc Oxide (IGZO) Based Electronic Devices Placed on an Ultrathin Poly(Methyl Methacrylate) (PMMA) Substrate

2018 ◽  
Vol 4 (7) ◽  
pp. 1800167 ◽  
Author(s):  
Yogeenth Kumaresan ◽  
Ryeri Lee ◽  
Namsoo Lim ◽  
Yusin Pak ◽  
Hyeonghun Kim ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Methyl Methacrylate ◽  
Electronic Devices ◽  
Indium Gallium Zinc Oxide ◽  
Pmma Substrate ◽  
Poly Methyl Methacrylate ◽  
Indium Gallium

scholarly journals Enhanced Optical Switching Characteristics of Organic Phototransistor by Adopting Photo-Responsive Polymer in Hybrid Gate-Insulator Configuration

Polymers ◽  
2020 ◽  
Vol 12 (3) ◽  
pp. 527 ◽  
Author(s):  
Hea-Lim Park ◽  
Min-Hoi Kim ◽  
Hyeok Kim
Keyword(s):  
Methyl Methacrylate ◽  
Interfacial Layer ◽  
Optical Switching ◽  
Uv Light ◽  
Charge Carriers ◽  
Gate Insulator ◽  
Poly Methyl Methacrylate ◽  
Responsive Polymer ◽  
Switching Characteristics ◽  
Organic Phototransistor

In this study, we developed polymer gate insulator-based organic phototransistors (p-OPTs) with improved optical switching properties by using a hybrid gate insulator configuration. The hybrid gate insulator of our p-OPT has a photoresponsive layer made of poly(4-vinylphenol) (PVP), which enhances the photoresponse, and an interfacial layer of poly(methyl methacrylate) for reliable optical switching of the device. Our hybrid gate insulator-equipped p-OPT exhibits well-defined optical switching characteristics because no specific type of charge is significantly trapped at an interfacial layer/organic semiconductor (OSC) interface. Moreover, our device is more photoresponsive than the conventional p-OPT (here, an OPT with a single-polymer poly(methyl methacrylate) (PMMA) gate insulator), because the characteristic ultraviolet (UV) absorption of the PVP polymer allows the photoresponsive layer and OSC to contribute to the generation of charge carriers when exposed to UV light.

The Influence of UV Light on Performance of Poly(methyl Methacrylate) in Regard to Dye-Sensitised Solar Cells

2019 ◽  
Vol 24 (1) ◽  
pp. 127-136 ◽  
Author(s):  
Kazimierz Darowicki ◽  
Michał Szociński ◽  
Katarzyna Schaefer ◽  
Douglas J. Mills
Keyword(s):  
Solar Cells ◽  
Methyl Methacrylate ◽  
Uv Light ◽  
Poly Methyl Methacrylate

The improved interfacial polarization in a poly(vinylidene fluoride-co-chlorotrifluoroethylene) composite with hyperbranched polyethylene-graft-poly(methyl methacrylate) modified boron nitride nanosheets

2020 ◽  
Vol 8 (37) ◽  
pp. 12819-12828
Author(s):  
Huijian Ye ◽  
Wenqing Liu ◽  
Xuanhe Zhang ◽  
Lixin Xu
Keyword(s):  
Boron Nitride ◽  
Methyl Methacrylate ◽  
Power Density ◽  
Vinylidene Fluoride ◽  
Electronic Devices ◽  
Interfacial Polarization ◽  
Large Power ◽  
Poly Methyl Methacrylate ◽  
Boron Nitride Nanosheets ◽  
Poly Vinylidene Fluoride

Polymer capacitors are promising candidates for the miniaturization and integration of electronic devices due to their flexibility and large power density.

scholarly journals Poly(methyl methacrylate)-grafted ZnO nanocomposites with variable dielectric constants by UV light irradiation

2016 ◽  
Vol 4 (16) ◽  
pp. 3640-3645 ◽  
Author(s):  
Kenichi Hayashida ◽  
Yasuhiro Takatani
Keyword(s):  
Methyl Methacrylate ◽  
Zno Nanoparticles ◽  
Uv Light ◽  
Dielectric Constants ◽  
Light Irradiation ◽  
Free Electrons ◽  
Poly Methyl Methacrylate ◽  
Uv Light Irradiation

Theεr′ of PMMA-grafted ZnO nanoparticles was greatly enhanced by irradiation of UV light owing to Maxwell–Wagner polarization of the resultant free electrons.

Synthesis and Properties Study of 1-(2,4-dimethoxyl-5-pyrimidinyl)-2-[2-methyl-5-(2-chlorophenyl)-3-thieny-l]perfluorocyclopentene

2013 ◽  
Vol 468 ◽  
pp. 79-82
Author(s):  
Jing Jing Liu ◽  
Hong Jing Jia ◽  
Shou Zhi Pu
Keyword(s):  
Methyl Methacrylate ◽  
Uv Light ◽  
Amorphous Film ◽  
Poly Methyl Methacrylate ◽  
Fluorescence Switching ◽  
Pyrimidine Moiety ◽  
Photochromic Reaction

A novel photochromic diarylethene with a six-membered pyrimidine was synthesized to investigate its photochromic behaviors. This compound exhibited reversible photochromism, changing from colorless to red after irradiation with UV light both in solution and in poly-methyl methacrylate (PMMA) amorphous film. Moreover, it exhibited remarkable fluorescence switching in solution. The results indicated that the pyrimidine moiety played a very important role during the process of photochromic reaction for the diarylethene derivative.

Processing Characteristics and Parametric Effects on Picosecond Laser Nanoscaled Patterning of Poly(methyl methacrylate)

2020 ◽  
Vol 20 (8) ◽  
pp. 5142-5146
Author(s):  
Ching-Yen Ho ◽  
Zui-Wei Liu ◽  
Xian-Liang Chen ◽  
Dongkai Qiao ◽  
Chang-Wei Xiong ◽  
...  
Keyword(s):  
Methyl Methacrylate ◽  
Laser Fluence ◽  
Electronic Devices ◽  
Pulsed Laser ◽  
Picosecond Laser ◽  
Ablation Rate ◽  
Poly Methyl Methacrylate ◽  
Nanoscale Patterning ◽  
Parametric Effects ◽  
Noncontact Processing

Characteristics of picosecond laser processing for poly(methyl methacrylate) (PMMA) are studied in this text. Poly(methyl methacrylate) (PMMA) can be applied to micro- or nano-scale electronic devices. Short-pulsed laser is usually used for noncontact processing of nanoscale patterning of poly(methyl methacrylate) (PMMA). This study considers optical energy of laser to be transferred into decomposition energy of poly(methyl methacrylate) (PMMA). Using the condition of the energy balance at the decomposition interface, the variation of the ablation rate with the logarithm of the laser fluence is calculated for poly(methyl methacrylate) (PMMA) and agrees with the measured data. This study also discusses parametric effects of poly(methyl methacrylate) (PMMA) on the variation of the ablation rate with the logarithm of the laser fluence.

Thermal Stability of Optically Transparent Alpha-Zirconium Phosphate/Poly(methyl methacrylate) Nanocomposites with High Particle Loading

2017 ◽  
Vol 25 (4) ◽  
pp. 267-272 ◽  
Author(s):  
Logan C. Hatanaka ◽  
Agustin Diaz ◽  
Qingsheng Wang ◽  
Zhengdong Cheng ◽  
M. Sam Mannan
Keyword(s):  
Thermal Stability ◽  
Methyl Methacrylate ◽  
Zirconium Phosphate ◽  
Uv Light ◽  
Mass Loss Rate ◽  
Polymeric Nanocomposites ◽  
Scanning Calorimetry ◽  
Poly Methyl Methacrylate ◽  
Wide Range ◽  
Optically Transparent

Polymeric nanocomposites have gained attention over the past few decades for their enhanced thermal stability and degradation. However, the reactions involved in a polymer nanocomposite can vary significantly from system to system, making it necessary to investigate novel nanofillers in search for more effective materials. Nanocomposites comprised of alpha-zirconium phosphate (ZrP) nanosheets in poly (methyl methacrylate) (PMMA) were prepared with a wide range of nanoparticle loadings (0, 5, 10, and 30 wt.% ZrP in PMMA). The ZrP nanocomposites were characterized using UV-visible spectroscopy (UV-vis), x-ray diffraction (XRD), thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). Nanocomposites were well dispersed and optically transparent as shown by XRD and UV-vis. However in the UV region, transparent ZrP nanocomposites possessed excellent UV scattering properties, significantly reducing the transmittance of UV-light, while remaining transparent to the visual spectrum. Thermal stability studies using TGA and DTG showed the peak mass loss rate (PMLR) was reduced by 10% and simultaneously shifted to higher temperatures by 41 °C. Since the nanocomposites in this work cover such a large range of ZrP loadings, large amounts of high-temperature residuals were encountered after TGA studies, indicating that the high loading ZrP nanocomposites are largely noncombustible. In addition, DSC studies showed that ZrP content does affect the glass transition temperature, but not enough to limit the application in which ZrP nanocomposites could be used. These results point to ZrP nanocomposites being useful as polymer replacements, behaving like polymers until the event of a fire, in which case they are largely noncombustible.

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