Polymer complexes. V. Thermal stability of poly(acrylamido‐4‐aminoantipyrinyl) homopolymer and polymer complexes of acrylamido‐4‐aminoantipyrinyl with some transition metal salts

Abstract

Acta Polymerica 40 (t989) Nr. 2 112 EL-SONBATI, EL-DISSOURY and DIAB: Polymer complexes. V Dieser Ansatz geht davon aus, daS sich an d e n ionischen Gruppen der Makroionen ein Gleichgewicht zwischen Gegenionenbindung und Makroionenbindung einstellt ; die Lage dieses Gleichgewichtes i m allgemeinen f u r die anionische und die kationische Symplexkomponente unterschiedlich ist. Auf Basis der hier durchgefuhrten uberlegungen ist auch ohne Kenntnis der Ionisierungskonstanten der beteiligten Polyelektrolyte fur homologe Reihen von Symplexsystemen (jeweils gleiche Grundstruktur, aher variable Ladungsclichte der Komponenten) eine interpolatorische Vorausberechnung von Endpunktsstochiometrien moglich. LiteraturZur fjberprufung unserer Modellvorstellungen wurden a u s d e m molaren Verhaltnis v o n kationischen zu anionischen Gruppen i m Titrationsendpunkt die Stochiometrie-Quotienten f u r verschiedene Kombinationen von Symplexsystemen ermittelt u n d entsprechend Tabelle 3 innerhalb f l 5 Y 0 eine Konstanz dieser Quotienten bei Variation der Ladungsdichte beobachtet, wie sie nach Gleichurig (5) zu erwarten ist. Die Moglichkeit einer interpolatorisclien Vorausberechnung von Stochiometrie bei Variation der Ladungsdichte einer Komponente demonstriert d a s folgende Beispiel, wobei sich eine befriedigende obereins t i m m u n g mit dem experimentell ermittelten W e r t zeigt :

Supramolecular Structure, Mode of Coordination, Thermal and Potentiometric Studies of Polymer Complexes: A Review

“…Poly(acrylamido-4-aminoantipyrinyl)(HL 12 ) homopolymer and polymer complexes (149-152) of acrylamido-4-aminoantipyrinyl (L 12 ) with some transition metal bromides and uranyl acetate have been prepared by El-Sonbati et al [37] . Dioxouranium(VI) acetate dehydrate reacts with L 12 in a 1:2 and with CuBr 2 , NiBr 2 and CoBr 2 in 1:1 metal:ligand molar ratios and the polychelates of the types shown in Fig.…”

“…The 1 H-NMR spectrum of monomers (L 1 -L 13 ) [22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38][39] showed the expected peaks and pattern of the vinyl group (CH 2 ¼CH), 6.25 ppm (dd, J ¼ 17, 11 Hz) for the vinyl CH proton and proton d 5.12 ppm (AM part of AMX system dd, J ¼ 17, 1 Hz) for the vinyl CH 2 protons, respectively. These peaks disappeared on polymerization while a triplet at d 1.86 ppm (t, J ¼ 7 Hz) and a doublet at 1.80 ppm (d, J ¼ 7 Hz) appeared, indicating that the polymerization of monomers occurs on the vinyl group [43,44] .…”

“…The most important peaks of proton magnetic resonance ( 1 H-NMR) of the ligands (L 1-13 ) and their complexes has been recorded in DMSO-d 6 using TMS as the internal standard [21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38] and tabulated in Table 1.…”

Synthesis and characterization of the core ‐shell magnetic molecularly imprinted polymer nanoparticles using 2‐(methacrylamido)ethyl methacrylate amide as a novel cross‐link agent for controlled release of betamethasone

“…The preparation of functional polymers by chemical modification is an important procedure in both industry for various technological applications and in polymer supported chemistry to obtain chemically reactive polymers. [24][25][26][27][28][29][30][31][32][33][34][35][36] The functional groups may be a part of the polymer backbone or bonded to a side chain as a pendant group. The appropriate active functional groups can be introduced onto a polymeric chain by polymerization of monomers including the desired functional groups or through chemical modification of a proper nonfunctionalized polymer.…”

Synthesis, characterization, and ligating behavior of poly[N,N‐p‐phenylene bisacryl (methacryl)amide]

“…The preparation of functional polymers by chemical modification is an important technique, which has been used extensively both in the industries to modify the properties of the polymers for various technological applications and in the area of polymer‐supported chemistry to prepare chemically reactive polymers 1–14. In principle, the functional groups may be a part of the polymer backbone or linked to a side chain as a pendant group.…”