Copolymerization of benzyl methacrylate and a methacrylate bearing benzophenoxy and hydroxyl side groups: Monomer reactivity ratios, thermal studies and dielectric measurements

Biryan, Fatih; Demirelli, Kadir

doi:10.1007/s12221-017-6707-9

Cited by 17 publications

(14 citation statements)

References 27 publications

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“…The dielectric constant ( ) and dielectric loss factor ( ) in both compositions (11 and 19%) of copolymers changed with temperature (Figures 15 and 16). As seen from the graphs, the ( ) and ( ) values of the copolymers increased with temperature and at high temperatures, and they increased more rapidly due to the segmental mobility and dipoles [25]. As the polymers are stationary and fixed under the glass transition temperature, when an electric field is applied to the polymer, the polymer chain movements increase as the polymer free volumes increase the glass transition temperature and a space occurs.…”

Section: Dielectrical Behavior and Conductivity Of P(deamstco-mma)mentioning

confidence: 90%

“…As the polymers are stationary and fixed under the glass transition temperature, when an electric field is applied to the polymer, the polymer chain movements increase as the polymer free volumes increase the glass transition temperature and a space occurs. In this case, the dielectric constant and dielectric losses factor increase by the temperature [3,23,25].…”

Section: Dielectrical Behavior and Conductivity Of P(deamstco-mma)mentioning

confidence: 98%

“…BCG (0.035 g) in 500 mL water. Then, in the dye adsorption experiments, 0.1 g of polymer samples was added onto 5 mL Journal of Chemistry portions of BCG solution and the absorbance was measured at different times and temperatures (25,45,55, and 65 ∘ C) by diluted samples periodically. The absorbance measurements were carried out by UV-visible spectrophotometer at max = 350 nm.…”

Section: Thermal Characterizationmentioning

confidence: 99%

“…It can be stated that the necessary activation energy for the activity of the charge carrier ions is dependent on temperature [25]. In this case, the mobility of the polymer has sufficient activation energy for the activity of the charge carrier ions as the temperature increases [25].…”

Section: Polymermentioning

confidence: 99%

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A Study on Copolymer Systems of Styrene with Diethanolamine Side Group and Methyl Methacrylate

Açıkses

Taskan

Barim

2018

Journal of Chemistry

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4-Diethanolaminomethyl styrene (DEAMSt) monomer was prepared by the modification of 4-chloromethyl styrene with diethanolamine. The copolymers in different combinations (0.11, 0.19, and 0.30 by mole) of DEAMSt and methyl methacrylate (MMA) were prepared by free radical polymerization method at 60°C in the presence of 1,4-dioxane and AIBN as initiator. The structures of DEAMSt and DEAMSt-MMA copolymer were characterized by FT-IR and 1H-NMR. The glass transition temperature (Tg) of the copolymers was measured by DSC. Thermal decomposition behavior of the copolymers was investigated by TGA. The average molecular weights of the copolymers were determined by GPC. The dye uptaking properties of the copolymers were investigated using bromocresol green. Then, the dielectric constant, dielectric loss factor, and conductivity of copolymers were investigated as a function of temperature and frequency. The activation energies (Ea) of the copolymers were determined by impedance analyzer.

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Section: Dielectrical Behavior and Conductivity Of P(deamstco-mma)mentioning

confidence: 90%

Section: Dielectrical Behavior and Conductivity Of P(deamstco-mma)mentioning

confidence: 98%

Section: Thermal Characterizationmentioning

confidence: 99%

Section: Polymermentioning

confidence: 99%

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A Study on Copolymer Systems of Styrene with Diethanolamine Side Group and Methyl Methacrylate

Açıkses

Taskan

Barim

2018

Journal of Chemistry

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“…It was observed that the dielectric constant of the poly(DEAMSt0.49-co-BMA) ligand increased as the number of -OH and C O groups increased. erefore, the presence of polar groups such as -OH and C O groups showed that was poly(DEAMSt0.49-co-BMA) ligand with a polar structure is one cause for the increase in dielectric constant [38,39]. When these results were compared with the results of the metal complex, the dielectric constant of Ni(II) complex was found to be higher than the dielectric constant of the Co(II) and Zn(II) complexes.…”

Section: Dielectric Propertiesmentioning

confidence: 97%

Synthesis, Characterization, and Dielectric Behaviors of 4-Diethanolaminomethyl Styrene and Benzyl Methacrylate Copolymer and Its Metal Complexes

Açıkses

Öksüz

2019

Journal of Chemistry

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In this paper, the copolymer of 4-diethanolaminomethyl styrene (DEAMSt) with benzyl methacrylate (BMA) was synthesized and characterized using various spectral techniques such as FT-IR, 1 H-NMR, elemental analysis, SEM, XRD, TGA, DTA, and DSC. e copolymer-metal complexes were prepared with Co(II), Ni(II), and Zn(II) metal ions, and poly(DEAMSt-co-BMA) was used as ligand. e copolymer-metal complexes were characterized using elemental analysis. FT-IR, SEM, XRD, magnetic measurements, and the thermal behaviors of the copolymer-metal complexes were studied using TGA, DTA, and DSC. e compositions of DEAMSt and BMA in the copolymer by 1 H-NMR spectra were determined as 0.49 and 0.51, respectively. Both poly(DEAMSt-co-BMA) and poly(DEAMSt-co-BMA)-Zn complexes were heated up to various temperatures. As the temperature increased, the intensities of O-H stretching bands at 3125-3429 cm −1 resulting from hydrogen bond decreased and shifted to high frequency. Gel permeation chromatography was used to determine the average molecular weights and polydispersity index of the poly(DEAMSt0.49-co-BMA) ligand. Both the molecular formula and C, H, and N % were estimated using elemental analysis, and the amounts of metal by mole (%) in the complexes were estimated by SEM-EDX measurements. e XRD patterns of ligand and metal complexes showed that they were of an amorphous nature. e synthesized metal complexes were annealed at 100°C for 1 h in order to obtain crystalline metal complexes. After annealing at 100°C, the metal complexes showed the crystalline structure. e SEM and XRD analysis of the metal complexes confirmed that metal ions contributed to the structure of the ligand. According to the magnetic measurements, it was suggested that geometrical structure for all complexes was tetrahedral geometry and the ratio of ligand to metal was found to be 2 : 1. e dielectric measurements of the ligand and its metal complexes were investigated depend on frequency.of ligands with transition metal ions [8][9][10]. Polymer metal complexes are used in many applications, such as alkali and alkaline earth metal ion separation [11], organic synthesis and nuclear chemistry [12], thermal stability, electrical conductivity, separation, photofunctions, catalytic activity, and biomedicine, gels, and ointments for medical use [13,14]. In addition, polymer-metal complexes are used as models for bioinorganic systems, as well as mechanochemical systems [11,15,16].In the present study, the poly(DEAMSt-co-BMA) was synthesized using free-radical polymerization, and this copolymer system was used as ligand. e copolymer-metal complexes were prepared with Co(II), Ni(II), and Zn(II) metal ions. e resulting copolymer and its metal complexes

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Novel bionanocomposites of chitosan‐based blend containing LaB₆: Thermal, dielectric, and biological properties

Erol

Hazman

Aksu

et al. 2023

Polymers for Advanced Techs

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In the presented study, a strategy that will offer alternative usage areas by strengthening the physicochemical properties of the green polymer chitosan (CS) is aimed.For this purpose, a compatible blend of CS (CS-PFPAMA) with poly 2-(4-fluorophenyl)-2-oxoethyl-2-methylprop-2-enoate (PFPAMA), a methacrylatebased synthetic polymer, was prepared by hydrothermal method. Miscibility and compatibility of the CS-PFPAMA blend were confirmed by the single glass transition temperature (T g ) determined by differential scanning calorimetry (DSC). Then, lanthanum hexaboride (LaB 6 ) nanoparticles (NPs) prepared by the chemical method were successfully added to the CS-PFPAMA blend at different weight ratios by hydrothermal method. Morphological characterizations of CS-PFPAMA blend and produced nanocomposites were performed with Fourier transform infrared spectroscopy, Xray diffraction, scanning electron microscope, energy-dispersive X-ray spectroscopy, and atomic force microscopy, and thermal characterizations were made with thermogravimetric analysis and DSC. The thermal stability and T g values of the obtained CS-PFPAMA blend and nanocomposites were lower than the values of the CS. However, LaB 6 NPs increased the dielectric properties of the CS-PFPAMA blend. Thus, the potential use of the produced nanocomposites in electronic devices may be in question. According to the results of antibiogram tests performed by the disk diffusion method, it was determined that nanocomposites showed a serious resistance against Escherichia coli and Staphylococcus aureus pathogens. In addition, both antioxidant and oxidant properties of nanocomposites showed values close to the reference material used. The determined biological properties indicate that the CS-based nanocomposites can be used as biomaterials.

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Copolymerization of benzyl methacrylate and a methacrylate bearing benzophenoxy and hydroxyl side groups: Monomer reactivity ratios, thermal studies and dielectric measurements

Cited by 17 publications

References 27 publications

A Study on Copolymer Systems of Styrene with Diethanolamine Side Group and Methyl Methacrylate

A Study on Copolymer Systems of Styrene with Diethanolamine Side Group and Methyl Methacrylate

Synthesis, Characterization, and Dielectric Behaviors of 4-Diethanolaminomethyl Styrene and Benzyl Methacrylate Copolymer and Its Metal Complexes

Novel bionanocomposites of chitosan‐based blend containing LaB₆: Thermal, dielectric, and biological properties

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Copolymerization of benzyl methacrylate and a methacrylate bearing benzophenoxy and hydroxyl side groups: Monomer reactivity ratios, thermal studies and dielectric measurements

Cited by 17 publications

References 27 publications

A Study on Copolymer Systems of Styrene with Diethanolamine Side Group and Methyl Methacrylate

A Study on Copolymer Systems of Styrene with Diethanolamine Side Group and Methyl Methacrylate

Synthesis, Characterization, and Dielectric Behaviors of 4-Diethanolaminomethyl Styrene and Benzyl Methacrylate Copolymer and Its Metal Complexes

Novel bionanocomposites of chitosan‐based blend containing LaB6: Thermal, dielectric, and biological properties

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Novel bionanocomposites of chitosan‐based blend containing LaB₆: Thermal, dielectric, and biological properties