Coordination polymers. XIII. Synthesis and investigation of polymers obtained by the reaction of maleic acid with ZnO

Vancsó-Szmercsányi, I.; Kalló, A.

doi:10.1002/pol.1982.170200305

Cited by 10 publications

(3 citation statements)

References 8 publications

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“…The thickening mechanism for UPE has been extensively investigated and is a subject of controversy [11][12][13][14][15][16]. A two-stage reaction theory [15][16][17] (Fig. 2, Scheme A) postulates that a basic salt is formed first by the reaction of the alkaline earth oxide and polyester acid group.…”

Section: Introductionmentioning

confidence: 99%

Sheet molding compound resins from soybean oil: Thickening behavior and mechanical properties

Lu¹,

Wool²

2007

Polymer Engineering & Sci

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Thermosetting resins for sheet molding compound (SMC) and bulk molding compound applications were synthesized from soybean oil. The SMC resins were prepared from maleated hydroxylated soybean oil (MHSO) and maleated acrylated epoxidized soybean oil (MAESO) with styrene. When thickened with divalent cations such as MgO, these resins exhibited a substantial rise in viscosity at room temperature because of complexation of MgO with the terminal acid groups on maleic anhydride. The resulting high viscosity sheet upon heating rapidly reduced its viscosity as the labile MgO-acid groups thermally disassociated. The flexural strength r and moduli E of these polymers varied from 61 to 87 MPa and from 1.6 to 2.4 GPa, respectively and the tensile strength and moduli varied from 27 to 44 MPa and from 1.6 to 2.5 GPa, respectively. The mechanical and fracture properties of these polymers were related to the amount of functional groups f, on the fatty acid backbone, and followed the Rigidity Percolation and Twinkling Fractal Theories, r $ [Em] 1/2 , where m $ [f À 1]. The fracture energy G IC decreased significantly with increasing crosslink density, as G IC $ m À2 and the plastic zone r p decreased as r p $ m À3 . The new bio-based resins possessed mechanical and thermal properties comparable with petroleum-based unsaturated polyesters.

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Section: Introductionmentioning

confidence: 99%

Sheet molding compound resins from soybean oil: Thickening behavior and mechanical properties

Lu¹,

Wool²

2007

Polymer Engineering & Sci

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“…The reaction of dicarboxylic acids with metal ions has been investigated either from the point of view of coordination chemistry or macromolecular chemistry. The polymeric nature of the metal dicarboxylate salts depends mainly on the coordination number of the metal ion as well as on the number of ligands from the system1 the steric factors and the method of preparation also have to be taken into account [7]. The excellent coordination capability of the carboxylic group has also been proved by the reactions of several dicarboxylic acids, such as 1,3-benzenedicarboxylic acid, 1,3,5-benzenetricarboxylic acid, 1,4benzenedicarboxylic acid, 1,2,4,5-benzenetetracarboxylic acid or 1,2-bis(carboxypropyl)oligo(dimethylsiloxane) with metals and novel metal coordinated polymers or networks have been reported [6,8,9].…”

Section: Introductionmentioning

confidence: 99%

Metal Complexes of Maleimide Compounds

Hulubei¹,

Cazacu²,

Morariu³

2006

High Performance Polymers

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The metal complexation ability of some N-substituted maleimides containing a carboxyl group was investigated. Thus, N-(4-carboxy-phenyl)-maleimide, N-(3-acetoxy-4-carboxy-phenyl)-maleimide and poly[ N-(3-acetoxy-4-carboxy-phenyl)-maleimide] were prepared and complexed with several transition metals, such as Co2+, Ni2+ and Cu2+. The formation of complexes which separated as precipitates from the reaction mixtures was confirmed by elemental and spectral analyses. The thermal stability of the complexes was evaluated by thermogravimetry.

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“…The polymeric nature of the metal dicarboxylate salts depends mainly on the coordination number of the metal ion and the number of ligands in the system, as well as on steric factors and the method of preparation. 6 Systematic studies of coordination polymers have been carried out by Korshak and coworkers. 7±11 Copper, Zinc, Cadmium, Cobalt and Nickel ions form polymeric salts easily by coordination with dicarboxylic, a,o-dioxidicarboxylic, and a,a'-dimethoxydicarboxylic acids.…”

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confidence: 99%

Coordination polymers of copper(II) with some dicarboxysiloxane ligands

Cazacu¹,

Airinei²,

Marcu³

2002

Applied Organom Chemis

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Several new coordination polymers of copper(II) with different carboxylate ligands containing siloxane units were synthesized by equilibrium polycoordination reactions of copper(II) acetate with the proper dicarboxylic acid (i.e. 1,3-bis(3-carboxypropyl)tetramethyldisiloxane, a,o-bis(3-carboxypropyl)oligodimethylsiloxane, and 1,3-bis(sebacomethyl)tetramethyldisiloxane) in solution (methanol), at room temperature. Some variations in the feed molar ratios were made. The resulting polymers having a polycoordination degree between 5 and 71 are soluble in a wide range of common organic solvents. The formation of polymers was proved by IR and UV±VIS absorption spectroscopy. The thermal behaviour of the coordination polymers was analysed by thermogravimetry in air. The silicon and copper contents and inherent viscosities were also determined.

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Coordination polymers. XIII. Synthesis and investigation of polymers obtained by the reaction of maleic acid with ZnO

Cited by 10 publications

References 8 publications

Sheet molding compound resins from soybean oil: Thickening behavior and mechanical properties

Sheet molding compound resins from soybean oil: Thickening behavior and mechanical properties

Metal Complexes of Maleimide Compounds

Coordination polymers of copper(II) with some dicarboxysiloxane ligands

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