Resin I: Synthesis and characterization of 2,2′‐dihydroxybiphenyl–urea–formaldehyde terpolymers

Jadhao, Manjusha M.; Paliwal, L. J.; Bhave, N. S.

doi:10.1002/app.21604

Cited by 30 publications

(38 citation statements)

References 18 publications

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“…12,13 The separated greenish resinous product was washed with hot water and methanol to remove unreacted monomer. The resinous product so obtained was washed with cold water, dried in air, and powdered.…”

Section: Synthesis Of the Copolymer Resinmentioning

confidence: 99%

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: Synthesis Of the Copolymer Resinmentioning

confidence: 99%

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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“…The air-dried powder was extracted with diethyl ether and then petroleum ether was used to remove salicylic acid-hexamethylenediamine and other posible copolymers, which might be present along with SHMF terpolymer. It was further purified by dissolving in 8% sodium hydroxide solution, filtered and reprecipitated by gradual drop wise addition of 1:1 (v/v) hydrochloric acid with constant and rapid stirring to avoid lump formation [42,43,44]. The SHMF terpolymer resin so obtained was filtered, washed several times with hot water and dried (yield=10 g; mp=220 0 ).…”

Section: Synthesis Of Shmf Terpolymer Resinmentioning

confidence: 99%

“…A blank experiment was also carried out in the same manner without adding the polymer sample to estimate the metal ion content. The amount of metal ion taken up by the terpolymer in the presence of given electrolyte of known concentration was determined from the difference between the blank reading and the reading in the actual experiment [43,44] Table-3.…”

Section: Determination Of Effect Of Different Electrolytes On Metal Imentioning

confidence: 99%

Synthesis of resin I: salicylic acid, hexamethylene diamine and formaldehyde and its ion-exchange properties

Masram¹,

Kariya²,

Bhave³

2007

E-Polymers

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Abstract:The terpolymer resin salicylic acid-hexamethylenediamine-formaldehyde (SHMF) was synthesized by the condensation of salicylic acid and hexamethylenediamine with formaldehyde in the presence of a hydrochloric acid catalyst. The number average molecular weight of the resin was determined by non-aqueous conductometric titration. Terpolymer resin was characterized by elemental analysis, infrared (IR) spectroscopy, nuclear magnetic resonance (NMR) spectroscopy and UV-Visible spectral studies. Chelation ion exchange properties have also been studied for Fe ions employing a batch equilibrium method. It was employed to study the selectivity of metal ion uptake involving the measurements of distribution of a given metal ion between the polymer sample and a solution containing the metal ion. The study was carried out over wide pH range and in the media of various ionic strengths. The terpolymer showed a higher selectivity for Fe

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“…A large number of practical applications of phenolic resins have been found in electronic controls, insulating materials, protective adhesives and aerospace industries because of their chemical resistance and electrical insulation properties 1 5 . The electrical property of p-cresol and melamine with formaldehyde polymer was measured over a wide range of temperature (313-423 K) 6 .…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Semiconducting Behavior of Terpolymer Resin-I Derived from Sulphanilic Acid, Melamine and Formaldehyde

Ingle¹,

Hiwase²,

Kalambe³

2012

Chem Sci Trans

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Abstract:The resin-I (abbreviated as SAMF-I) was synthesized by polycondensation reaction of sulphanilic acid (0.05 M), melamine (0.05 M) and formaldehyde (0.15 M) in presence of an acid catalyst (1 M HCl). The structure of resin was determined by its elemental analysis, UV-Vis, IR data. Molecular weight of resin was determined by non aqueous conductometric titration. DC conductivity of the terpolymer was studied over a wide range of temperature. The resin was found to show semiconducting behavior since Wilson's law was obeyed. The conductivity of SAMF-I was found to be in the range 3.8x10 -8 to 2.9x10 -8 mho cm -1 for temperature range 303-423 K. The activation energy of conduction for SAMF-I was found to be 0.981 kJmol -1 .

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Resin I: Synthesis and characterization of 2,2′‐dihydroxybiphenyl–urea–formaldehyde terpolymers

Cited by 30 publications

References 18 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 of resin I: salicylic acid, hexamethylene diamine and formaldehyde and its ion-exchange properties

Synthesis and Semiconducting Behavior of Terpolymer Resin-I Derived from Sulphanilic Acid, Melamine and Formaldehyde

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