Miscibility of methylmethacrylate-co-methacrylic acid polymer with magnesium, zinc, and manganese sulfonated polystyrene ionomers

2005-01-01
Alkan, C
Yurtseven, N
Aras, L
The miscibility of methyl methacrylate-co-methacrylic acid polymer (MMA-MAA) with metal neutralized sulfonated polystyrene ionomers was investigated by viscometry, differential scanning calorimetry (DSC), and Fourier transform infrared radiation spectroscopy (FTIR) techniques. Polystyrene (PS) was sulfonated by acetic anhydride and sulfuric acid and the sulfonation degree was found to be 2.6 mole percent, and 2.6 mole percent sulfonated polystyrene was neutralized by Mg, Zn, and Mn salts. The miscibility behavior of the blends of MMA-MAA with Mg neutralized 2.6 mole% sulfonated polystyrene (2.6MgSPS), Mn neutralized 2.6mole% sulfonated polystyrene (2.6MnSPS), and Zn neutralized 2.6 mole% sulfonated polystyrene (2.6ZnSPS) was investigated by dilute solution viscometry. The results showed that 2.6MgSPS blends were miscible with MMA-MAA in all compositions, 2.6ZnSPS blends were all immiscible, and 2.6MnSPS blends were immiscible at certain compositions. Even though the DSC thermograms of samples were taken in the solid state, they showed consistency with the results of dilute solution viscometry with a few exceptions. DSC results indicated that 2.6ZnSPS was immiscible with MMA-MAA as 2.6MnSPS and 2.6ZnSPS blends were immiscible at certain compositions. FTIR studies of miscible and immiscible blends revealed the existence of specific interactions between carbonyl oxygen of MMA-MAA copolymer and neutralizing cation of the sulfonated polystyrene.
TURKISH JOURNAL OF CHEMISTRY

Suggestions

Miscibility of polystyrene-based lonomers with poly(2,6-dibromo-1,4-phenylene oxide)
Alkan, C; Aras, L (2001-12-27)
Blends of poly(2,6-dibromo-1,4-phenylene oxide) (PDBrPO) with 4.8 mol % sulfonated polystyrene (4.8SPS), Na-neutralized 1.7 mol % sulfonated polystyrene (Na1.7SPS), Mn-neutralized 3.8 mol % sulfonated polystyrene (Mn3.8SPS), and Zn-neutralized 3.8 mol % sulfonated polystyrene (Zn3.8SPS) ionomers were investigated for their miscibilities with varying compositions by dilute solution viscometry (DSV), scanning electron microscopy (SEM), and differential scanning calorimetry (DSC). Deltab, mu, and alpha paramet...
Highly Crystalline Poly(L-lactic acid) Porous Films Prepared with CO2-philic, Hybrid, Liquid Cell Nucleators
Culhacioglu, Yagmur; Hasırcı, Nesrin; Dilek Hacıhabiboğlu, Çerağ (2019-12-18)
Supercritical CO2 (scCO(2)) foaming of poly(L-lactic acid) composite films with liquid polyhedral oligomeric silsesquioxanes (PLLA-POSS) was carried out to obtain polymer matrices for drug delivery applications. Highly crystalline (>45%) PLLA generally requires high supercritical processing (saturation) temperatures close to its melting temperature (similar to 450 K) and pressures about or over 20 MPa for foaming with scCO(2). To decrease the saturation temperature and obtain ductile PLLA films with uniform...
Thermal Characterization of Sepiolite Samples
Kök, Mustafa Verşan (2013-01-15)
In this research, two sepiolite samples of different origins were studied by X-ray diffraction, Fourier transform infrared spectroscopy, differential scanning calorimeter, and thermogravimetry. It was observed that both sepiolite samples are nearly pure and well crystallized sepiolite. Thermal studies (thermogravimetry) showed that four distinct weight loss regions are observed in both sepiolite samples studied. It was noticed that these structural changes play an important role to the properties and uses o...
Epoxidation of Ethylene by Silver Oxide (Ag2O) Cluster: A Density Functional Theory Study
Fellah, Mehmet Ferdi; van Santen, Rutger A.; Önal, Işık (2011-06-01)
Density functional theory (DFT) calculations were employed to study epoxidation of ethylene on a [Ag14O9] cluster model representing silver oxide (001) surface. Theoretical results obtained in this study showed that formation paths of acetaldehyde and vinyl alcohol have higher activation barriers than that of ethylene oxide formation path on silver oxide (35 and 35 vs. 20 kcal/mol). Formation of the ethylene oxometallocycle intermediate is found to have a low probability on Ag2O(001) surface. The essential ...
Carboligation reactivity of benzaldehyde lyase (BAL, EC 4.1.2.38) covalently attached to magnetic nanoparticles
TURAL, Bilsen; Turan, Ilke Simsek; TURAL, SERVET; Celebi, Bulent; Demir, Ayhan Sıtkı (Elsevier BV, 2013-03-31)
Epoxy-functionalized Fe3O4-SiO2 core-shell magnetic nanoparticles (epoxy-M-support) were prepared by modification with glycidyloxypropyltrimethoxysilane (GPTMS) and characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), and fourier transform infrared spectroscopy (FTIR) methods. Pure histidine-tagged recombinant benzaldehydelyase (BAL, EC 4.1.238) was efficiently immobilized onto the epoxy-M-support with covalent binding. An immobilized BAL epoxy-M-support system was tested to cat...
Citation Formats
C. Alkan, N. Yurtseven, and L. Aras, “Miscibility of methylmethacrylate-co-methacrylic acid polymer with magnesium, zinc, and manganese sulfonated polystyrene ionomers,” TURKISH JOURNAL OF CHEMISTRY, pp. 497–506, 2005, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/67198.