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Your search keyword '"Salami‐Kalajahi, Mehdi"' showing total 255 results
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25. Effect of SiO2 on the Performance of Cellulose/Poly(Vinylidene Fluoride) Films as Polymer Electrolytes for Lithium Ion Battery.

Author

Mohamadzade, Shirin, Safavi‐Mirmahalleh, Seyedeh‐Arefeh, Roghani‐Mamaqani, Hossein, and Salami‐Kalajahi, Mehdi

Subjects
POLYELECTROLYTES, SILICA films, LITHIUM-ion batteries, DIFLUOROETHYLENE, POLYMER blends, IONIC conductivity, POLYMER colloids
Abstract

Polymer electrolytes serve as highly efficient alternatives to liquid electrolytes, especially in terms of safety in lithium ion batteries. Among various polymers, Cellulose contains electron‐donating atoms which can coordinate with lithium salts and be used as polymer electrolyte. Also, cellulose can be blended with other polymers to improve their properties. Polymer electrolytes suffer from poor mechanical properties. Adding nanoparticles not only surmounts the drawback of poor mechanical properties but also improves physical and electrochemical properties. In this study, different weight ratios of PVDF/cellulose blend films containing silicon dioxide (SiO2) are prepared via solution casting method. The results explored ionic conductivity in order of 10−4 S cm−1. In addition, high transfer numbers (0.74

Published
2024
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26. Anti‐Inflammatory Drugs‐Modified Poly(2‐Hydroxyethyl Methacrylate) Particles as Anticancer Drug Carriers.

Author

Ghaffari, Shima, Golshan, Marzieh, Jalili, Kiyumars, and Salami‐Kalajahi, Mehdi

Subjects
POISONS, FIELD emission electron microscopy, ANTINEOPLASTIC agents, CYTOTOXINS, DRUG carriers
Abstract

In this work, 2‐hydroxyethyl methacrylate (HEMA) is modified by ibuprofen and diclofenac as anti‐inflammatory drugs to synthesize ibuprofen‐HEMA and diclofenac‐HEMA monomers. Then, poly(ibuprofen‐HEMA‐co‐HEMA) (PIHH), poly(diclofenac‐HEMA‐co‐HEMA) (PDHH), and poly(2‐hydroxyethyl methacrylate) (PHEMA) particles are prepared by distillation precipitation polymerization. The morphology and size of the particles are investigated by dynamic light scattering (DLS) and field emission scanning electron microscopy (FE‐SEM). It is observed that all particles are spherical and with sizes of 298.3 nm for PHEMA, 178.8 nm for PDHH, and 85.2 nm for PIHH, respectively. Doxorubicin drug is loaded into the prepared particles and the drug release behavior is investigated for all the particles at two different pH values of 7.4 and 5.3. The release of the drug in acidic pH is higher due to the better solubility of DOX in acidic environment and the faster release of DOX molecules from nanocarriers. The toxicity of particles is also investigated and it is observed that by loading the drug into the PHEMA particles, the release of the drug causes fewer toxic effects than in the free state (drug without any nanocarrier), and the presence of ibuprofen and diclofenac in the particles, that is, PIHH and PDHH, led to a significant reduction in the cytotoxicity. [ABSTRACT FROM AUTHOR]

Published
2024
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