نتایج جستجو برای: melamine

تعداد نتایج: 1559  

Butyl stearate as a phase change material was microencapsulated within melamine-formaldehyde resin using emulsion polymerization. Morphology and thermal specification of produced microcapsules were studied by Fourier transform infrared spectroscopy, FT-IR, scanning electron microscopy, SEM, and Differential scanning calorimetry analysis, DSC. FT-IR spectra validated the existence of the butyl s...

Journal: :Chemistry 2023

The discovery of melamine by Justus von Liebig was fundamental for the development several fields chemistry. vast majority compounds with or derivatives appear as adducts. Herein, we focus on novel containing anionic species, namely melaminates. For this purpose, analyze reaction SbCl3 differential scanning calorimetry (DSC). whole study includes synthesis and characterization three antimony th...

Farhad Shirini, Jalal Albadi, Mohammad A. Zolfigol Toktam F. Rastegar

Tetrahydropyranylation of alcohols and phenols, acetylation of aldehydes and N-Boc protection of amines are efficiently catalyzed by melamine trisulfonic acid (MTSA). All reactions were performed at room temperature in good to high yields.

2017
Ramesh Karunagaran Tran Thanh Tung Cameron Shearer Diana Tran Campbell Coghlan Christian Doonan Dusan Losic

The synthesis and properties of an oxygen reduction catalyst based on a unique 3-dimensional (3D) nitrogen doped (N-doped) carbon composite are described. The composite material is synthesised via a two-step hydrothermal and pyrolysis method using bio-source low-cost materials of galactose and melamine. Firstly, the use of iron salts and galactose to hydrothermally produceiron oxide (Fe₂O₃) mag...

Journal: :California medicine 1953
A A MARLOW G R BARTLETT

X-radiation remains the treatment of choice in most cases of leukemia and lymphoma, but new agents are playing an increasing role in therapy. Radioactive phosphorus does not produce radiation sickness and results with it are comparable to those of x-ray therapy in chronic leukemia. Urethane and nitrogen mustard may produce remissions in patients with chronic leukemia who have become resistant t...

2017
Xuedong Xi Antonio Pizzi Siham Amirou Philippe Seguin

Abstract: (MGG’) resin adhesives for bonding wood panels were prepared by a single step procedure, namely reacting melamine with glyoxal and simultaneously with a much smaller proportion of glutaraldehyde. No formaldehyde was used. The inherent slow hardening of this resin was overcome by the addition of N-methyl-2-pyrrolidone hydrogen sulphate ionic liquid as the adhesive hardener in the glue ...

2017
RACHANEEWAN KARNKA PREEYAPORN CHAIYASAT AMORN CHAIYASAT

In this work, precipitation polymerization was used to prepare uniform and stable molecular imprinting polymers (MIPs) particles without post treatment. Melamine was used as a template molecule model, while methacrylic acid, divinyl benzene (DVB) or ethylene glycol dimethacrylate (EGDMA) and acetonitrile were used as functional monomer, cross-linker and continuous phase, respectively. The polym...

2014
Jie Cheng Shi Wang Xiao-Ou Su Ralph Tripp

A rapid, selective, and sensitive method to determine the melamine content in animal feeds was developed using surface-enhanced Raman scattering spectroscopy on aggregated 55 nm Au nanoparticles with liquid-liquid extraction sample preparation. Butyl alcohol was used as the initial extraction solvent, and liquid-liquid extraction was performed twice using HCl (pH 3-4) and 6:1 (v/v) n-butyl alco...

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