Wrinkles with a well-ordered checkerboard pattern, created using dip-coating of poly(methyl methacrylate) on a UV–ozone-treated poly(dimethylsiloxane) substrate

Soft Matter ◽  
2012 ◽  
Vol 8 (5) ◽  
pp. 1563-1569 ◽  
Author(s):  
Masashi Watanabe
Keyword(s):  
Methyl Methacrylate ◽  
Dip Coating ◽  
Checkerboard Pattern ◽  
Poly Methyl Methacrylate ◽  
Uv Ozone

scholarly journals PREPARATION OF MESOSCOPIC STRUCTURE POLY METHYL METHACRYLATE THIN FILMS FOR AFM DATA STORAGE DEVICES.

2019 ◽  
Vol 2 (1) ◽  
pp. 1-3
Author(s):  
Chandar Shekar B ◽  
Sathisha S ◽  
Sulana Sundari ◽  
Sunnitha S ◽  
Sharmila C
Keyword(s):  
Thin Films ◽  
Methyl Methacrylate ◽  
Data Storage ◽  
Dip Coating ◽  
Magnetic Data ◽  
Promising Alternative ◽  
Poly Methyl Methacrylate ◽  
Mesoscopic Structure ◽  
Coating Method ◽  
Dip Coating Method

Poly methyl methacrylate (PMMA) thin films were prepared by dip coating method. Benzene was used as a solvent to prepare PMMA thin films for the time periods ranging from 1 min. to 1 h. The thickness of the films deposited was measured by using an electronic thickness measuring instrument (Tesatronic-TTD-20). Fourier Transform Infrared spectrum was used to identify the above said films. X-ray diffraction spectra indicated the predominantly amorphous nature of the films. Surface morphology of the coated films studied by using scanning electron microscope (SEM) indicated the absence of any pits, cracks and pin holes in the surface. Both as grown and annealed films showed smooth and amorphous structures. The closer SEM inspection revealed the presence of self assembled mesoscopic cells. The mesoscopic structure PMMA thin films could be used as an AFM-based data storage which is promising alternative to conventional magnetic data storage because it offers great potential for considerable storage density improvements.

scholarly journals Simply Fabricated Inexpensive Dual-Polymer-Coated Fabry-Perot Interferometer-Based Temperature Sensors with High Sensitivity

Sensors ◽  
2021 ◽  
Vol 21 (22) ◽  
pp. 7632
Author(s):  
Tejaswi Tanaji Salunkhe ◽  
Ho Kyung Lee ◽  
Hyung Wook Choi ◽  
Sang Joon Park ◽  
Il Tae Kim
Keyword(s):  
Methyl Methacrylate ◽  
Performance Optimization ◽  
High Sensitivity ◽  
Cost Effective ◽  
Dip Coating ◽  
Temperature Sensors ◽  
Polymer Mixture ◽  
Thermosensitive Polymers ◽  
Poly Methyl Methacrylate ◽  
Fabry Perot

We designed simply fabricated, highly sensitive, and cost-effective dual-polymer-coated Fabry–Perot interferometer (DFPI)-based temperature sensors by employing thermosensitive polymers and non-thermosensitive polymers, as well as different two successive dip-coating techniques (stepwise dip coating and polymer mixture coating). Seven sensors were fabricated using different polymer combinations for performance optimization. The experiments demonstrated that the stepwise dip-coated dual thermosensitive polymer sensors exhibited the highest sensitivity (2142.5 pm °C−1 for poly(methyl methacrylate)-polycarbonate (PMMA_PC) and 785.5 pm °C−1 for poly(methyl methacrylate)- polystyrene (PMMA_PS)). Conversely, the polymer-mixture-coated sensors yielded low sensitivities (339.5 pm °C−1 for the poly(methyl methacrylate)-polycarbonate mixture (PMMA_PC mixture) and 233.5 pm °C−1 for the poly(methyl methacrylate)-polystyrene mixture (PMMA_PS mixture). Thus, the coating method, polymer selection, and thin air-bubble-free coating are crucial for high-sensitivity DFPI-based sensors. Furthermore, the DFPI-based sensors yielded stable readouts, based on three measurements. Our comprehensive results confirm the effectiveness, reproducibility, stability, fast response, feasibility, and accuracy of temperature measurements using the proposed sensors. The excellent performance and simplicity of our proposed sensors are promising for biomedical, biochemical, and physical applications.

Comparison Between Poly(methyl methacrylate)-Carbon Black and Polyaniline Conductive Coatings

2008 ◽  
Vol 8 (5) ◽  
pp. 2637-2642 ◽  
Author(s):  
L. Li ◽  
E. Liu ◽  
L. Z. Goh ◽  
Y. P. Lee
Keyword(s):  
Carbon Black ◽  
Methyl Methacrylate ◽  
Coating Thickness ◽  
Carbon Nanoparticles ◽  
Composite Coatings ◽  
Conductive Polymer ◽  
Dip Coating ◽  
Particle Dispersion ◽  
Conductive Coatings ◽  
Poly Methyl Methacrylate

This work aims to develop and compare two types of conductive, polymer-based coatings via a dip coating process. The first type of coatings was made by dispersing and incorporating carbon black (CB) nanoparticles in a poly(methyl methacrylate) (PMMA) solution followed by dip coating. The CB content and dipping parameters were varied to explore their effects on the particle dispersion, coating thickness, and conductivity of the coatings. The dispersion of the CB particles in the polymer matrix was examined by scanning electron microscopy (SEM), while the coating thickness and conductivity were measured with a surface profilometer and a four-point probe electrometer, respectively. The good dispersion of carbon nanoparticles in the PMMA matrix was observed in the coatings. The conductivity of the PMMA-CB composite coatings was found to be mainly affected by CB content, particle dispersion as well as coating thickness. On the other hand, polyaniline (PANI) was used to make conductive coatings by dip coating and doping, and the advantages and limitations of the PANI coatings were compared with the PMMA-CB coatings.

scholarly journals Poly(Methyl Methacrylate) Coatings Containing Flame Retardant Additives from Suspensions in Water-2-Propanol

Molecules ◽  
2021 ◽  
Vol 26 (7) ◽  
pp. 1974
Author(s):  
Xuelin Li ◽  
Zhengzheng Wang ◽  
Sadman Sakib ◽  
Ritch Mathews ◽  
Igor Zhitomirsky
Keyword(s):  
Methyl Methacrylate ◽  
Flame Retardant ◽  
Composite Coatings ◽  
Polymer Concentration ◽  
Colloidal Suspensions ◽  
Dip Coating ◽  
Aqueous Corrosion ◽  
Salting Out ◽  
Poly Methyl Methacrylate ◽  
Coating Technique

A dip-coating technique is designed for deposition of poly(methyl methacrylate) (PMMA) from water/2-propanol mixture, avoiding the use of traditional toxic solvents. Solutions of PMMA macromolecules with high molecular weight (MW) are obtained for a water/2-propanol ratio of 0.15–0.33 and the solubilization mechanism is discussed. The ability to use concentrated PMMA solutions and high MW of the polymer are the key factors for the successful dip coating deposition. The coating mass for 10 g L−1 polymer solutions shows a maximum at a water/2-propanol ratio of 0.25. The deposition yield increases with the polymer concentration increase and with an increasing number of the deposited layers. PMMA deposits protect stainless steel from aqueous corrosion. The coating technique allows for the fabrication of composite coatings, containing flame-retardant materials (FRMs), such as commercial halloysite, huntite, hydrotalcite, and synthesized Al(OH)3, in the PMMA matrix. The FRM content in the coatings is modified by variation of the FRM content in colloidal suspensions. A fundamentally new method is developed, which is based on the salting out aided dispersive extraction of Al(OH)3 from the aqueous synthesis medium to 2-propanol. It is based on the use of hexadecylphosphonic acid molecules as extractors. The method offers advantages of reduced agglomeration.

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