Results 1 to 10 of about 40,682 (74)

Complex refractive index measurements of Poly(methyl methacrylate) (PMMA) over the UV-VIS-NIR region [PDF]

Optics Continuum Vol. 2, Issue 11, pp. 2280-2289 (2023), 2023
Poly(methyl methacrylate), PMMA, is a popular polymer for optical applications due to its superior transmission and reflection. However, its optical properties in the ultraviolet regime still need to be thoroughly studied. Using the reflection-transmission method, we determine its complex refractive index by numerically analyzing the measured data from
arxiv   +1 more source

Low-energy vibrational density of states of plasticized poly(methyl methacrylate) [PDF]

Phil. Mag. B, 82 (2002) 533-539, 2001
The low-energy vibrational density of states (VDOS)of hydrogenated or deuterated poly(methyl methacrylate)(PMMA)plasticized by dibutyl phtalate (DBP) is determined by inelastic neutron scattering.From experiment, it is equal to the sum of the ones of the PMMA and DBP components.However, a partition of the total low-energy VDOS among PMMA and DBP was ...
arxiv   +1 more source

Enhanced Resolution of Poly-(Methyl Methacrylate) Electron Resist by Thermal Processing [PDF]

J. Vac. Sci. Technol. B 27,4, pp. 1915-1918, 2009, 2012
Granular nanostructure of electron beam resist had limited the ultimate resolution of electron beam lithography. We report a thermal process to achieve a uniform and homogeneous amorphous thin film of poly methyl methacrylate electron resist. This thermal process consists of a short time-high temperature backing process in addition to precisely ...
arxiv   +1 more source

Patchy worm-like micelles: solution structure studied by small-angle neutron scattering [PDF]

Phys. Chem. Chem. Phys. 14, 12750 (2012), 2012
Triblock terpolymers exhibit a rich self-organization behavior including the formation of fascinating cylindrical core-shell structures with a phase separated corona. After crystallization-induced self-assembly of polystryrene-(block)-polyethylene-(block)-poly(methyl methacrylate) triblock terpolymers (abbreviated as SEMs = Styrene-Ethylene ...
arxiv   +1 more source

Analysis of the Phase Separation Induced by a Free-Radical Polymerization in Solutions of Polyisobutylene in Isobornyl Methacrylate [PDF]

Ind. Eng. Chem. Res., 2007, 46 (23), 7535-7542, 2013
We analyze a polymerization-induced phase separation taking place in solutions of a polymer dissolved in a vinyl monomer undergoing an isothermal free-radical polymerization. The selected system was a solution of polyisobutylene (PIB) in isobornyl methacrylate (IBoMA).
arxiv   +1 more source

Study of scintillation in natural and synthetic quartz and methacrylate [PDF]

Optical Materials 36 (2014) 1408, 2014
Samples from different materials typically used as optical windows or light guides in scintillation detectors were studied in a very low background environment, at the Canfranc Underground Laboratory, searching for scintillation. A positive result can be confirmed for natural quartz: two distinct scintillation components have been identified, not being
arxiv   +1 more source

The physical studies and interaction with anti-apoptotic proteins of 2-(bis(cyanomethyl)amino)-2-oxoethyl methacrylate molecule [PDF]

Condens. Matter Phys., 2019, vol. 22, No. 3, 33301, 2019
In this work 2-(bis(cyanomethyl)amino)-2-oxoethyl methacrylate (CMA2OEM) molecule has been characterized theoretically. First, the potential energy surface has been calculated to find the lowest energy state of the molecule. After the most stable state of the molecule, Mulliken atomic charge and nonlinear-optical properties were investigated.
arxiv   +1 more source

Incorporation of magnetic nanoparticles into lamellar polystyrene-b-poly(n-butyl methacrylate) diblock copolymer films: influence of the chain end-groups on nanostructuration [PDF]

Polymer, Elsevier, 2010, 51 (21), pp.4673-4685, 2018
In this article, we present new samples of lamellar magnetic nanocomposites based on the self-assembly of a polystyrene-b-poly(n-butyl methacrylate) diblock copolymer synthesized by atom transfer radical polymerization. The polymer films were loaded with magnetic iron oxide nanoparticles covered with polystyrene chains grown by surface initiated-ATRP ...
arxiv   +1 more source

Poly(methyl methacrylate) - Palladium clusters nanocomposite formation by supersonic cluster beam deposition: a method for microstructured metallization of polymer surfaces [PDF]

, 2009
Nanocomposite films were fabricated by supersonic cluster beam deposition (SCBD) of palladium clusters on Poly(methyl methacrylate) (PMMA) surfaces. The evolution of the electrical conductance with cluster coverage and microscopy analysis show that Pd cluster are implanted in the polymer and form a continuous layer extending for several tens of ...
arxiv   +1 more source

Oil removal from water oil emulsions using magnetic nanocomposite fibrous mats [PDF]

RSC Advances, 2016,6, 71100-71107
Herein we present the fabrication of hydrophobic and oleophilic poly(methyl methacrylate) based nanocomposite fibrous mats with magnetic properties, and their utilization for oil removal from stable water oil emulsions.
arxiv   +1 more source