Synthetic, structural, and thermal degradation of a tercopolymer derived from salicylic acid, guanidine, and formaldehyde

Michael, Pratik E. P.; Lingala, Peter S.; Juneja, Harjeet D.; Paliwal, L. J.

doi:10.1002/app.13691

Cited by 33 publications

(21 citation statements)

References 23 publications

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“…It is observed that the molecular weight of terpolymer increases with the increase in hexamethylenediamine content. This observation is in agreement with the trend observed by earlier researchers [17]. Conductometric titration curve of terpolymer was shown in Figure 2 and the results are presented in Table 2.…”

Section: Resultssupporting

confidence: 92%

“…The thermal stability of terpolymers has been extensively studied by employing the method of thermogravimetric analysis (TGA) by several authors [12][13][14][15][16][17][18][19][20][21]. Thermoanalytical and kinetic studies of terpolymer resins derived from 8-hydroxyquinoline-5-sulphonic acid/p-cresol, oxamide/melamine with formaldehyde have been reported by Singru et al [12,13].…”

Section: Introductionmentioning

confidence: 99%

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Thermal Degradation Studies of Terpolymer Derived from 2-Aminothiophenol, Hexamethylenediamine, and Formaldehyde

Belsare

Zade

Kalbende

et al. 2014

Journal of Polymers

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Terpolymer (2-ATPHMDAF-I) has been synthesized by the condensation of 2-aminothiophenol and hexamethylenediamine with formaldehyde in the presence of 2 M hydrochloric acid as a catalyst with 1 : 1 : 2 molar proportion of reacting monomers. The structure of newly synthesized terpolymer has been elucidated and confirmed on the basis of elemental analysis and various spectral techniques, that is, UV-visible, FT-IR, and 1 H-NMR spectroscopy. Number average molecular weight (Mn) has been determined by conductometric titration in nonaqueous medium. The viscosity measurements in dimethyl sulfoxide (DMSO) have been carried out to ascertain the characteristic functions and constants. The studies have been further extended to nonisothermal thermogravimetric analysis for determination of their mode of decomposition and relative thermal stability. Activation energy ( ), order of reaction ( ), and frequency factor ( ) were calculated by Friedman, Chang, Sharp-Wentworth and Freeman-Carroll methods. Activation energy calculated by Friedman and Chang methods are in close agreement with each other while the results obtained from Freeman-Carroll and Sharp-Wentworth's methods are found to be in a similar order.

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Section: Resultssupporting

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Thermal Degradation Studies of Terpolymer Derived from 2-Aminothiophenol, Hexamethylenediamine, and Formaldehyde

Belsare

Zade

Kalbende

et al. 2014

Journal of Polymers

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“…Thermogram of all 2, 2'-HBBF copolymer exhibited two stages of decomposition after loss of water molecules. It is observed from TG data of these copolymer resins that the sample lost 3.81 to 6.58% of its weight when the temperature was raised to 180 0 C. This initial weight loss may be attributed to solvent or moisture entrapped in the copolymer samples [21][22][23][24] . First decomposition step in 2, 2'-HBBF copolymer resin represents % Mass loss degradation of both phenolic hydroxyl groups.…”

Section: Thermogravimetric Analysismentioning

confidence: 99%

Synthesis, Thermal and Electrical Properties of 2, 2’-HBBF Copolymer Resin

Rahangdale¹,

Gurnule²

2012

Chem Sci Trans

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Abstract:The copolymer (2, 2'-HBBF) synthesized by the condensation of 2, 2'-dihydroxybiphenyl (2, 2'-HB) and biuret (B) with formaldehyde (F) in the presence of acid catalyst using 1:1:2 molar proportions of the reacting monomers. The thermogravimetric analysis of copolymer resin prepared in the present study has been carried out by non-isothermal thermogravimetric analysis technique in which sample is subjected to condition of continuous increase in temperature at linear rate. 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. The electrical properties of 2, 2'-HBBF copolymers were measured over a wide range of temperature (303-423 K). From the electrical conductivity of these copolymers, activation energies of electrical conduction have been evaluated and values lies in the range 3.01x10 -20 -6.43x10 20 J/K. On the basis of above studies, these copolymers can be ranked as semiconductors.

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“…Patel and Lad12 reported the novel terpolymers: poly(keto‐amine‐ureas) and studied the glass reinforcement of such terpolymer‐ epoxy systems. Michael and coworkers have reported the synthesis, structural, and thermal degradation of a polymer derived from salicylic acid, guanidine, and formaldehyde 13. Synthesis, characterization, and ion exchange properties of 4‐hydroxyacetophenone, biuret, and formaldehyde terpolymer resin were studied by Gurnule et al14 Ion exchange resin derived from semicarbazone and oximes of 2‐hydroxy acetophenone‐substituted benzoic acid‐formaldehyde studied by Nayak and coworkers 15, 2.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of resin IV: Salicylic acid, diaminonaphthalein, and formaldehyde terpolymer and its ion exchange

Masram

Bhave

Kariya³

2010

J of Applied Polymer Sci

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This article reports the synthesis, characterization, and ion exchange properties of a terpolymer. The terpolymer resin salicylic acid-diaminonaphthaleinformaldehyde (SDNF) was synthesized by the condensation of salicylic acid and diaminonaphthalein with formaldehyde in the presence of a hydrochloric acid catalyst. Terpolymer resin was characterized by elemental analysis, infrared (IR) spectroscopy, nuclear magnetic resonance spectroscopy, and UV-Visible spectral studies. The number average molecular weight of the resin was determined by nonaqueous conductometric titration.

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Synthetic, structural, and thermal degradation of a tercopolymer derived from salicylic acid, guanidine, and formaldehyde

Cited by 33 publications

References 23 publications

Thermal Degradation Studies of Terpolymer Derived from 2-Aminothiophenol, Hexamethylenediamine, and Formaldehyde

Thermal Degradation Studies of Terpolymer Derived from 2-Aminothiophenol, Hexamethylenediamine, and Formaldehyde

Synthesis, Thermal and Electrical Properties of 2, 2’-HBBF Copolymer Resin

Synthesis of resin IV: Salicylic acid, diaminonaphthalein, and formaldehyde terpolymer and its ion exchange

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