• Moayad Hossaini Sadr

      Articles written in Bulletin of Materials Science

    • Layered zinc hydroxide–ibuprofen nanohybrids: synthesis and characterization

      Hafezeh Nabipour Moayad Hossaini Sadr

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      The nonsteroidal anti-inflammatory drug (NSAID), ibuprofen (IBU) anion, was intercalated into the layered zinc hydroxide (LZH) to form a new organic–inorganic nanohybrid. Then, IBU–LZH nanohybrid was dispersed into chitosan for the formation of the nanocomposite. The IBU–LZH nanohybrid was characterized by powder X-ray diffraction (PXRD) to study intercalation, scanning electron microscopy (SEM) for the investigation of surface morphology, Fourier transform infrared (FTIR) spectrophotometer to study the chemical interactions and thermal gravimetric analysis/derivative thermogravimetric analysis (TGA/DTG) for understanding the thermal stability. The PXRD patterns showed that the IBU was successfully intercalated into the interlay space of LZHs as monolayers and the basal spacing of LZH increased from 9.57 to 19.54 Å. The FTIR analyses confirmed the formation of the host–guest nanohybrid. The DTG studies revealed that the thermal stability of IBU was increased after the intercalation into LZH. The in vitro release study of IBU from IBU–LZH and IBU–LZH/chitosan nanocomposite was investigated in phosphate buffer saline (PBS) solution of pH 4.8 and 7.4. The drug release from the LZH was studied by ultraviolet–visible (UV–vis) spectroscopy.

    • Synthesis and characterization of core–shell magnetic molecularly imprinted polymer nanoparticles for selective extraction of tizanidine in human plasma

      GOLALEH SHEYKHAGHAEI MOAYAD HOSSAINI SADR SALAH KHANAHMADZADEH

      More Details Abstract Fulltext PDF

      In this study, simple, effective and general processes were used for the synthesis of a new nanomolecularly imprinted polymers (MIPs) layer on magnetic Fe3O4 nanoparticles (NPs) with uniform core–shell structure by combining surface imprinting and nanotechniques. The first step for the synthesis of magnetic NPs was co-precipitation of Fe$^{2+}$ and Fe$^{3+}$ in an ammonia solution. Then, an SiO$_2$ shell was coated on the magnetic core with the Stöber method. Subsequently, the C$=$C groups were grafted onto the silica-modified Fe$_3$O$_4$ surface by 3-(trimethoxysilyl) propyl methacrylate. Finally, MIPs films were formed on the surface of Fe$_3$O$_4$@SiO$_2$ by the copolymerization of C$=$C end groups with methacrylic acid (functional monomer), ethylene glycol dimethacrylate (crosslinker),2,2-azobisisobutyronitrile (initiator) and tizanidine (template molecule). The products were characterized using techniques that included Fourier transform infrared (FT-IR) spectroscopy, X-ray diffraction (XRD), thermogravimetric analysis (TGA), scanning electron microscopy (SEM), UV spectrophotometry, transmission electron microscopy (TEM) and vibrating sample magnetometer (VSM). Measurement of tizanidine through use of the core–shell magnetic molecularly imprinted polymers nanoparticles (MMIPs-NPs) in human plasma samples compared to the paracetamol showed that the synthesized nanosized MMIP for tizanidine has acted selectively.

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    • Dr Shanti Swarup Bhatnagar for Science and Technology

      Posted on October 12, 2020

      Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
      Chemical Sciences 2020

      Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
      Physical Sciences 2020

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

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