Preparation and surface modification of magnesium hydroxide in a cetyltrimethyl ammonium bromide/isopropanol/cyclohexane/water microemulsion

Micro & nano letters

article

Haihong Wu¹  Xu Zhao¹  Licong Wang¹  Laibo Ma¹  Xiping Huang¹ 

[1] The Institute of Seawater Desalination and Multipurpose Utilization (SOA)

关键词: differential scanning calorimetry;    particle size;    precipitation;    scanning electron microscopy;    nucleation;    X-ray diffraction;    transmission electron microscopy;    microemulsions;    crystal structure;    thermal stability;    pyrolysis;    thermostability;    conventional magnesium hydroxide;    thermogravimetry-differential scanning calorimetry;    nucleation;    cetyltrimethyl ammonium bromide-isopropanol-cyclohexane-water microemulsion;    X-ray diffraction;    scanning electron microscopy;    infrared testing;    dispersion testing;    thermal decomposition;    flame resistance;    temperature 293 K to 298 K;    MgOH;   

DOI  :  10.1049/mnl.2018.5281

学科分类：计算机科学（综合）

来源: Wiley

【 摘 要 】

A series of benzohydrazide derivatives attached to coumarin moiety at position 6 and 7 have been synthesized. The reaction of coumarin derivatives (coumarin I and II) with p-nitrophenyl hydrazine yield Schiff bases (compound1a and IIa).These Schiff bases were refluxed with benzoyl chloride to give benzohydrazide derivatives of coumarin substituted at its 6 or 7 nucleus position (Ia1 and IIa1).The reaction and the purity of the products were checked by thin layer chromatography (TLC). The structures of the final compounds  and  their intermediates were confirmed by their melting points, infra red spectroscopy, and elemental microanalysis(CHN). Compounds (Ia1 and IIa1) were evaluated for  their preliminary antibacterial and antifungal activities. Compound (IIa1) has good antibacterial activity against Staphylococcus aureus   other  than bacterial species, and was equivalent to ofloxacin as (standard drug). Key word: Coumarin, Schiff base, benzohydrazide derivatives, antimicrobial activity.

【 授权许可】

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