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TÜBİTAK

2022

Composite

Articles 1 - 3 of 3

Full-Text Articles in Chemistry

The Investigation Of Parameters Affecting Ibrutinib Release From Chitosan/ Tripolyphosphate/Carbon Nanofiber Composite Microspheres, Canan Armutcu Jan 2022

The Investigation Of Parameters Affecting Ibrutinib Release From Chitosan/ Tripolyphosphate/Carbon Nanofiber Composite Microspheres, Canan Armutcu

Turkish Journal of Chemistry

This study described the performance of carbon nanofiber modified chitosan (CNF@CS) composite microspheres for the controlled release of the Ibrutinib (IBR) drug. The surface morphology, particle sizes, and functional group contents of the microspheres were characterized by attenuated total reflection-Fourier transform infrared spectroscopy (ATR-FTIR), scanning electron, and optical microscopy measurements. The obtained data demonstrated that the addition of CNF to the microsphere increased the encapsulation efficiency of the IBR while allowing the controlled and gradual release of the drug. In terms of the encapsulation efficiency and drug release rate, IBR@CS/TPP/CNF microspheres, achieving drug encapsulation efficiency of 83.09%, have the most …


Single-Side Polypyrrole Coated Conductive And Flexible Polyurethane Films, Meli̇s Bi̇lal, Esma Sezer, Belkis Ustamehmetoglu Jan 2022

Single-Side Polypyrrole Coated Conductive And Flexible Polyurethane Films, Meli̇s Bi̇lal, Esma Sezer, Belkis Ustamehmetoglu

Turkish Journal of Chemistry

In this study, single-side polypyrrole (PPy) coated conductive stretchable polyurethane (PU) / PPy composite films were synthesized by chemical oxidative method in the acetonitrile (ACN)/H2O interface as a new alternative to two-side coated PU films which have already reported in the literature. One surface of the PU film was contacted with aqueous Py solution and the other surface with cerium ammonium nitrate (CAN) solution in ACN, so that only one surface of the film was coated with PPy and the resulting composite was named PU/PPy (PUP). This composite was characterized by four-point probe conductivity measurement, Fouriertransform infrared spectroscopy …


The Effect Of A Phosphorus-Based Fr On The Fire Performance And Flammability Properties Of Basalt Fiber-Reinforced Acrylonitrile-Butadiene-Styrene Composites, Çağrialp Arslan, Mehmet Doğan Jan 2022

The Effect Of A Phosphorus-Based Fr On The Fire Performance And Flammability Properties Of Basalt Fiber-Reinforced Acrylonitrile-Butadiene-Styrene Composites, Çağrialp Arslan, Mehmet Doğan

Turkish Journal of Chemistry

This study focuses on the improvement in fire performance, and flame retardancy (FR) properties of chopped basalt fiberreinforced acrylonitrile-butadiene-styrene (ABS) composites. For this purpose, different amounts of aluminum diethyl phosphinate (AlPi) compound (5, 10, and 15 wt%) were incorporated in the composites. The FR properties of the composites were examined via limiting oxygen index (LOI), UL-94 standard, and mass loss calorimeter tests. Thermogravimetric analysis was carried out to analyze the decomposition behavior of the composites. SEM inspection was also performed to examine the char surfaces of the composites. The results and findings showed that the introduction of AlPi compound into …