Poly(acrylic acid-co-maleic acid)–metal complexes with copper(II), cobalt(II), and nickel(II)

Rivas, Bernabé L.; Seguel, G. V.

doi:10.1016/s0277-5387(99)00149-7

Cited by 50 publications

(32 citation statements)

References 15 publications

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“…Other additives including, but not restricted to, phosphoric [88], amino [89], maleic [90], itaconic [91] and oxalic acids [92] have been studied and discussed in other review papers [3,7,40]. Yet, they are not the focus of this review article.…”

Section: Effect Of Additives/chelating Agentsmentioning

confidence: 99%

The role of poly(acrylic acid) in conventional glass polyalkenoate cements

Alhalawani

Curran

Boyd

et al. 2015

Journal of Polymer Engineering

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Abstract Glass polyalkenoate cements (GPCs) have been used in dentistry for over 40 years. These novel bioactive materials are the result of a reaction between a finely ground glass (base) and a polymer (acid), usually poly(acrylic acid) (PAA), in the presence of water. This article reviews the types of PAA used as reagents (including how they vary by molar mass, molecular weight, concentration, polydispersity and content) and the way that they control the properties of the conventional GPCs (CGPCs) formulated from them. The article also considers the effect of PAA on the clinical performance of CGPCs, including biocompatibility, rheological and mechanical properties, adhesion, ion release, acid erosion and clinical durability. The review has critically evaluated the literature and clarified the role that the polyacid component of CGPCs plays in setting and maturation. This review will lead to an improved understanding of the chemistry and properties of the PAA phase which will lead to further innovation in the glass-based cements field.

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Section: Effect Of Additives/chelating Agentsmentioning

confidence: 99%

The role of poly(acrylic acid) in conventional glass polyalkenoate cements

Alhalawani

Curran

Boyd

et al. 2015

Journal of Polymer Engineering

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“…It was optimized by molecular mechanical and subsequently by the PM6 calculation method. (Table 2) shows the antisymmetric and symmetric stretching vibrations of the acetate group at 1608 and 1440 cm -1 [17]. The spectrum of the complex Cu 2 (CH 3 COO) 4 (Tz) 2 shows the same absorption bands at 1620 and 1436 cm -1 and the strength vibrations ν (C=N) from thiazole group at 1496 cm -1 .…”

Section: Introductionmentioning

confidence: 90%

Synthesis and Characterization of Copper Complexes: Interaction of Metalliccarboxylates With 1,3-Thiazole Ligand

Seguel¹,

Rivas²,

Contreras³

2013

J. Chil. Chem. Soc.

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Complexes were synthesized from aspirinate of Cu(II) and acetate of Cu(II) dihydrated with the ligand 1,3-thiazole and were characterized through elemental analysis, magnetic moment, FT-IR spectroscopy, and thermogravimetric analysis. Moreover, semiempirical structural PM6 of both compounds were carried out.Ligand 1,3-thiazole coordinates with the Cu(II) ions through the nitrogen without break the dimeric unit Cu 2 (RCOO) 4. To coordinate with the aspirinate of Cu(II), the ligand must to break tridimensional arrangement and to coordinate with the acetate of Cu(II) dihydrated, it replaced the water molecules. In both compounds, Cu 2 (asp) 4 (Tz) 2 and Cu 2 (acetate) 4 (Tz) 2 , the PM6 calculations corresponding to the Cu-Cu distances in the dimeric unit Cu 2 (RCOO) 4 presents a small difference 0.03A°, but the magnetic moments are very different. The complex with aspirinate presents a magnetic moment of 1.79 M.B and that with acetate is 1.4 MB.

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“…Observation of a transition in the conductivity mechanism is generally explained with loss of water molecules in the polychelates. 15 The temperature at which these transitions are observed was deduced from the intersection of extrapolations of the fits to the linear parts showing metallic and semiconductor behavior, and are tabulated in Table III. We note that, the transition temperature is higher for the polychelates showing lower room temperature conductivity and vice versa.…”

Section: Conductivitymentioning

confidence: 99%

“…We note that, the transition temperature is higher for the polychelates showing lower room temperature conductivity and vice versa. A semiconductor behavior, above the transition temperature, can be 4,15,16 to the equation,…”

Section: Conductivitymentioning

confidence: 99%

Temperature dependence of electrical conductivity in poly(maleic anhydride‐alt‐acrylic acid) and its transition metal complexes

et al. 2004

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Poly(maleic anhydride-alt-acrylic acid) and its transition-metal complexes with Ni(II), Cu(II), and Cd(II) were synthesized. Poly(maleic anhydride-alt-acrylic acid) was characterized using Fourier transform infrared (FTIR), titration, viscometry, differential scanning calorimetry (DSC), and POLY(MALEIC ANHYDRIDE-alt-ACRYLIC ACID) AND ITS TRANSITION METAL COMPLEXESthermogravimetric (TGA) analysis. The temperature dependence of the conductivity of the copolymer and polychelates of transition metals was investigated between 300 and 453 K. The polychelates and copolymers were also analyzed by using FTIR spectroscopy before and after transition point. The observed conductivity followed by a semiconductor behavior with increasing temperature is discussed in relation to the presence of transition-metal ions. C

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Poly(acrylic acid-co-maleic acid)–metal complexes with copper(II), cobalt(II), and nickel(II)

Cited by 50 publications

References 15 publications

The role of poly(acrylic acid) in conventional glass polyalkenoate cements

The role of poly(acrylic acid) in conventional glass polyalkenoate cements

Synthesis and Characterization of Copper Complexes: Interaction of Metalliccarboxylates With 1,3-Thiazole Ligand

Temperature dependence of electrical conductivity in poly(maleic anhydride‐alt‐acrylic acid) and its transition metal complexes

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