Abstract
Abstract A method to produce thin layer of PMMA (poly (methyl methacrylate) films by spin coating is reported. PMMA is dissolved in xylene, a mixture of MIBK-xylene and chloroform. Varying the PMMA concentration and spin-coating speeds controls the thickness of the PMMA films. Using chloroform as solvent evidenced thickness around 10 μm. This thickness is suitable for core of optical polymeric films. These PMMA films with lower roughness are treated with CHF3 plasma to produce the cladding. The morphology of PMMA films is analyzed by atomic force microscopy and scanning electron microscopy. Profilometry, metricon and contact angle analysis are associated with the effective parameters in roughness and their effect before and after plasma treatment. Gel permeation chromatography (GPC) is used for estimating molecular weights of PMMA.
Highlights
(methyl methacrylate) (PMMA) is the most the type of solvent selected plays an important role in the important thermoplastic polymer that has been widely used uniformity and thickness of the PMMA films
The polymer solution is films, before or/and after plasma treatment, were analyzed deposited on a static substrate, which is rotated at a given by atomic force microscopy (AFM), scanning electron angular velocity during a given period of time (Figure 1). microscopy (SEM), water contact angle measurement, The thickness of the resulting films depends on the refractive index and proflilometry
Number average molecular weight (Mn), weight average molecular weight (Mw), peak molecular weight (Mp) and poly-dispersity (Mw/Mn) of PMMA and the polymer standards were determined by gel permeation chromatography (GPC) (Waters 410) equipped with three columns arranged in sequence (HR-3, HR-4 and HR-5) with the stationary phase of styrene-divinylbenzene with pore dimensions of 103, 104 and 105 Å, respectively
Summary
(methyl methacrylate) (PMMA) is the most the type of solvent selected plays an important role in the important thermoplastic polymer that has been widely used uniformity and thickness of the PMMA films. A solvent in various industrial fields due to its transparency, light with lower vaporizability results in better uniformity and weight and low cost[1]. It can substitute glass in several lower thickness. Previous works showed PMMA films of 14 μm as core devices, optical lenses, and in gratings or waveguides[2,3,4]. The present work we attempt to compare for enhanced refractive index modeling for core material, and the influence of spin-coating speeds and the concentration for the ease of manufacturing process and patterning of PMMA dissolved in different solvents. The polymer solution is films, before or/and after plasma treatment, were analyzed deposited on a static substrate, which is rotated at a given by atomic force microscopy (AFM), scanning electron angular velocity during a given period of time (Figure 1). microscopy (SEM), water contact angle measurement, The thickness of the resulting films depends on the refractive index and proflilometry
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