نتایج جستجو برای: poly methyl methacrylate pmma
تعداد نتایج: 192829 فیلتر نتایج به سال:
The effects of various polymerization times on the properties and conductivity poly(methyl methacrylate)/polyaniline (PMMA/PANi) copolymer has been investigated. Different times, such as 1 h, 2 3 have employed during free radical copolymerization PMMA/PANi copolymer. newly synthesized were discussed with help Fourier transform infrared (FTIR), 1H nuclear magnetic resonance (NMR) spectroscopies,...
In esthetic restorative dentistry, resin composites are generally encountered. Because of their excellent biocompatibility, lack taste, odour, tissue discomfort, and toxicity, insolubility in body fluids, ease use, good clinical/ aesthetic properties, stable colours, optical characteristics, efficient pigmentation, low cost, repairability, they becoming more common. Currently used composite res...
The objective of this study was to synthesize and characterize particles as a drug-delivery platform for gliomas, a highly advanced and invasive stage of brain tumor with poor prognosis. Poly(aminoethyl methacrylate-co-methyl methacrylate) particles were prepared by suspension polymerization and poly(aminoethyl methacrylate-co-poly(ethylene glycol) methacrylate) particles were prepared by emuls...
This study examines the use of an aggregation-induced enhanced emission fluorophore (TPE-MRh) to prepare red-emitting luminescent solar concentrators (LSCs) based on poly(methyl methacrylate) (PMMA) and poly(cyclohexyl (PCMA). TPE-MRh is a tetraphenylethylene (TPE) derivative bearing two dimethylamino push groups 3-methyl-rhodanine pull moiety, with absorption maxima at around 500 nm fluorescen...
Abstract Injection moulding of micropillar arrays offers a fast and inexpensive method for manufacturing sensors, optics, lab-on-a-chip devices, medical devices. Material choice is important both the function device optimisation. Here, comparative study poly(methyl methacrylate) (PMMA) cyclic olefin copolymer (COC) injection presented. These two polymers are chosen their convenient physical, ch...
Alloys of Poly (Methyl methacrylate) (PMMA) and Poly (vinyl Chloride) (PVC) were prepared by solvent casting techniques. Physiochemical characteristics of the products were studied. It was found that at certain relative concentration, some of these properties were enhanced, while in some, degraded relative to the constituent homopolymers. These results were interpreted in terms of the interacti...
PURPOSE Poly(methyl methacrylate) (PMMA) has been widely used as a denture-base acrylic resin due to its excellent physical and mechanical properties. However, the material is highly prone to microbial fouling that often leads to Candida-associated denture stomatitis. Incorporation of phosphate groups into PMMA could facilitate adsorption of salivary antimicrobials and inhibit microbial adheren...
We report a study on directed self-assembly (DSA) with solvent annealing to induce the formation of non-bulk block copolymer microdomains on chemical patterns. Ultrathin films of symmetric polystyrene-block-poly(methyl methacrylate) (PS-b-PMMA) display morphologies of PMMA dots, stripes, and PS hexagons with increasing exposure time to acetone vapor, a PMMA-selective solvent. All three nanostru...
Polystyrene (PS) and poly(methyl methacrylate) (PMMA) blends filled with octadecylamine-functionalized graphene (GE-ODA) have been fabricated to obtain conductive composites with a lower electrical percolation threshold according to the concept of double percolation. The dependence of the electrical properties of the composites on the morphology is examined by changing the proportion of PS and ...
A simple, straightforward process for fabricating multi-scale micro- and nanostructured patterns from polystyrene-block-poly(2-vinylpyridine) (PS-b-P2VP)/poly(methyl methacrylate) (PMMA) homopolymer in a preferential solvent for PS and PMMA is demonstrated. When the PS-b-P2VP/PMMA blend films were spin-coated onto a silicon wafer, PS-b-P2VP micellar arrays consisting of a PS corona and a P2VP c...
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