Synthesis, characterization and ion-exchange properties of 4-hydroxyacetophenone, biuret and formaldehyde terpolymer resins

Gurnule, Wasudeo B.; Rahangdale, P. K.; Paliwal, L. J.; Kharat, R. B.

doi:10.1016/s1381-5148(03)00016-6

Cited by 61 publications

(41 citation statements)

References 16 publications

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“…18 Moreover, the amount of Co(II) and Pb(II) ions taken up by the copolymer samples decreased with the increasing concentration of the chloride, nitrate, perchlorate, and sulfate ions. 15,18 This type of trend has also been observed by other investigators in this field.…”

Section: Influence Of Electrolytes On the Metal-ion Uptakementioning

confidence: 92%

Copolymer resin. VII. 8‐hydroxyquinoline‐5‐sulfonic acid–thiourea–formaldehyde copolymer resins and their ion‐exchange properties

Mane¹,

Wahane²,

Gurnule³

2008

J of Applied Polymer Sci

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8-Hydroxyquinoline-5-sulfonic acid-thiourea-formaldehyde copolymer resins were synthesized through the condensation of 8-hydroxyquinoline-5-sulfonic acid and thiourea with formaldehyde in the presence of hydrochloric acid as a catalyst and with various molar ratios of the reacting monomers. The resulting copolymers were characterized with UV-visible, IR and 1H-NMR spectral data, employed to determine the reactivity of monomers. The average molecular weights of these resins were determined with vapor pressure osmometry and conductometric titration in a nonaqueous medium. The chelation ion-exchange properties were also studied with the batch equilibrium method. The resins were proved to be selective chelating ion-exchange copolymers for certain metals. The chelation ion-exchange properties of these copolymers were studied for Cu 2þ , Ni 2þ , Co 2þ , Pb 2þ , and Fe 3þ ions. The study was carried out over a wide pH range and in media of various ionic strengths. The copolymers showed a higher selectivity for Fe 3þ ions than for Cu 2þ , Ni 2þ , Co 2þ , and Pb 2þ ions.

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Section: Influence Of Electrolytes On the Metal-ion Uptakementioning

confidence: 92%

Copolymer resin. VII. 8‐hydroxyquinoline‐5‐sulfonic acid–thiourea–formaldehyde copolymer resins and their ion‐exchange properties

Mane¹,

Wahane²,

Gurnule³

2008

J of Applied Polymer Sci

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“…For Sb 3+ and Mg 2+ the equilibrium was reached within 7 h whereas for Bi 3+ and Zn 2+ , the time required to reach equilibrium was 6 h. The rates of metal uptake for trivalent metal ions (Bi 3+ and Sb 3+ ions) were higher than divalent metal ions (Mg 2+ and Zn 2+ ions) [28][29][30] . The rate of metal ion uptake decreases in order Bi 3+ > Sb 3+ > Zn 2+ > Mg 2+ .…”

Section: Rate Of Metal Uptakementioning

confidence: 99%

“…Chem Sci Trans., 2014, 3(1), [19][20][21][22][23][24][25][26][27][28] Azarudeen et al 5 synthesized phthalic acid-urea-formaldehyde terpolymer resin and proved to be a selective chelation ion-exchange terpolymer for metals. A batch equilibrium method was employed to study the selectivity and sorption capacity of the resin towards certain divalent metal ions such as Pb 2+ …”

mentioning

confidence: 99%

Synthesis, Characterization and Ion-Exchange Properties of Terpolymer Resin-II Derived from p-Hydroxybenzaldehyde, Thiourea and Ethylene Glycol

Gupta¹,

Hiwase²,

Kalambe³

2013

Chem Sci Trans

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Ion-exchange resin (HBTE-II) was synthesized by polycondensation in the presence of polyphosphoric acid as a catalyst using monomers p-hydroxybenzaldehyde (0.2 M), thiourea (0.1 M) and ethylene glycol (0.4 M) at 120 0 C. The terpolymer resin was characterized by elemental analysis, the number average molecular weight, UV-Visible, IR and 1 H NMR spectrum. Chelating ion-exchange properties of this copolymer were studied for Bi 3+ , Sb 3+ , Zn 2+ and Mg 2+ ions. A batch equilibrium method was employed in the study of the selectivity of metal ion uptake involving the measurements of the distribution of a given metal ion between the polymer sample and a solution containing the metal ion. The study was carried out over a wide pH range and in media of various ionic strengths. The metal ions were estimated spectrophotometrically. The HBTE-II terpolymer resin was found to be selective chelating ion-exchange resin for Sb 3+ , Bi 3+ and Zn 2+.

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“…Hong et al studied the thermal decomposition behaviour of phosphorous containing copolyester [7]. In an earlier communication [8][9][10][11] from this department, numbers of studies on such terpolymers have been reported. However, no work seems to have been carried out on synthesis, characterization, and thermal stabilities of the terpolymer resins-IV from 8-hydroxyquinoline 5-sulphonic acid-melamine and formaldehyde.…”

Section: Introductionmentioning

confidence: 99%

Thermogravimetric and Spectroscopic Analysis of 8-Hydroxyquinoline 5-Sulphonic Acid-melamine-formaldehyde Polymer Resin-IV

Singru

2012

ISRN Thermodynamics

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The title terpolymer (8-HQ5-SAMF-IV) synthesized by the condensation of 8-hydroxyquinoline 5-sulphonic acid (8-HQ5-SA) and melamine (M) with formaldehyde (F) in the presence of acid catalyst and using varied 3 : 1 : 5 molar proportions of the reacting monomers. The synthesized terpolymer was characterized by different physicochemical techniques. The thermogravimetric analysis of terpolymer resin prepared in the present study has been carried out by nonisothermal thermogravimetric analysis technique in which sample is subjected to condition of continuous increase in temperature at linear rate. Thermal study of the resin was carried out to determine the mode of decomposition and thermal stability. Thermal decomposition curve was studied carefully with minute details. The Freeman-Carroll and Sharp-Wentworth methods have been used in the present investigation to calculate thermal activation energy and different kinetic parameter of the terpolymer resin. Thermal activation energy (E a ) calculated by two above mentioned methods, is in close agreement. The advantage of Freeman-Carroll method is to calculate both the order of reaction (n) and energy of activation in one single stage by keeping heating rate constant. By using data of thermogravimetric analysis, various thermogravimetric parameters like frequency factor (Z), entropy change (ΔS), free energy change (ΔF), and apparent entropy (S * ) have been determined using Freeman-Carroll method.

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Synthesis, characterization and ion-exchange properties of 4-hydroxyacetophenone, biuret and formaldehyde terpolymer resins

Cited by 61 publications

References 16 publications

Copolymer resin. VII. 8‐hydroxyquinoline‐5‐sulfonic acid–thiourea–formaldehyde copolymer resins and their ion‐exchange properties

Copolymer resin. VII. 8‐hydroxyquinoline‐5‐sulfonic acid–thiourea–formaldehyde copolymer resins and their ion‐exchange properties

Synthesis, Characterization and Ion-Exchange Properties of Terpolymer Resin-II Derived from p-Hydroxybenzaldehyde, Thiourea and Ethylene Glycol

Thermogravimetric and Spectroscopic Analysis of 8-Hydroxyquinoline 5-Sulphonic Acid-melamine-formaldehyde Polymer Resin-IV

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