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Titre du document / Document title

Synthesis, Characterization and Thermal Degradation of Substituted Acetophenone Based Terpolymers Having Biological Activities

Auteur(s) / Author(s)

CHAUHAN Narendra P. S. (1) ; AMETA Rakshit (2) ; AMETA Suresh C. (1) ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

(1) Department of Polymer Science, University College of Science, M. L. Sukhadia University, Udaipur, INDE
(2) Department of Pure & Applied Chemistry, University of Kota, Kota, INDE

Résumé / Abstract

The terpolymer resins have been synthesized by the condensation of p- hydroxyacetophenone and p-chloroacetophenone with formaldehyde/furfuraldehyde in the presence of catalyst in 1:1:5 molar proportions of reactants. The molecular structures were confirmed by FT-IR and Pyrolysis GC-MS. The number average molecular weights of these resins were determined by conductometric titration in non-aqueous medium. Viscometric measurements in tetrahydrofuran (THF) have been carried out with a view to ascertaining the characterstic functions and constant. Detailed thermal degradation studies of the terpolymer have been carried out to ascertain its thermal stability. A multiple linear regression (MLR) method has been used to calculate activation energies and frequency factor. Formaldehyde based terpolymer (Ea = 22.3 KJ/mol, Z= 0.77) has a greater activation energy and frequency factor as compared to furfuraldehyde based terpolymer (Ea =18.8 KJ/mol, Z = 0.25). Thermodynamic parameters such as free energy (ΔG), entropy change (ΔS*) and rate constant (kr) have also been evaluated on the basis of data of the Ozawa, Flynn and Wall method. All the synthesized polymers have shown excellent antimicrobial activities as compared to the standard Ciprofloxacin and Amphotericin-B drugs.

Revue / Journal Title

Journal of macromolecular science. Pure and applied chemistry    ISSN  1060-1325   CODEN JSPCE6 

Source / Source

2011, vol. 48, no4-6, pp. 482-492 [11 page(s) (article)] (23 ref.)

Langue / Language

Anglais

Editeur / Publisher

Taylor & Francis, Colchester, ROYAUME-UNI  (1992) (Revue)

Mots-clés anglais / English Keywords

Biological properties

;

Experimental study

;

Fungicidal effect

;

Bactericidal effect

;

Activation energy

;

Thermal degradation

;

Thermal stability

;

Formaldehyde

;

Furfural

;

Acetophenone derivatives

;

Phenols

;

Copolycondensation

;

Solution polycondensation

;

Preparation

;

Antimicrobial agent

;

Chlorine containing copolymer

;

Terpolymer

;

Functional polymer

;

Methylene copolymer

;

Phenylene derivative copolymer

;

Mots-clés français / French Keywords

Propriété biologique

;

Furane dérivé copolymère

;

Phénylène(3-acétyl-6-chloro) copolymère

;

Phénylène(3-acétyl-6-hydroxy) copolymère

;

Etude expérimentale

;

Fongicidie

;

Bactéricidie

;

Energie activation

;

Dégradation thermique

;

Stabilité thermique

;

Formaldéhyde

;

Furfural

;

Dérivé de l'acétophénone

;

Phénols

;

Copolycondensation

;

Polycondensation solution

;

Préparation

;

Antimicrobien

;

Copolymère chlore

;

Terpolymère

;

Polymère fonctionnel

;

Méthylène copolymère

;

Phénylène dérivé copolymère

;

Mots-clés espagnols / Spanish Keywords

Propiedad biológica

;

Estudio experimental

;

Efecto fungicido

;

Bactericidia

;

Energía activación

;

Degradación térmica

;

Estabilidad térmica

;

Formaldehído

;

Furfural

;

Acetofenona derivado

;

Fenoles

;

Copolicondensación

;

Policondensación solución

;

Preparación

;

Antimicrobiano

;

Copolímero cloro

;

Terpolímero

;

Polímero funcional

;

Metileno copolímero

;

Fenileno derivado copolímero

;

Mots-clés d'auteur / Author Keywords

Terpolymer resins

;

pyrolysis (GC/MS)

;

multiple linear regression (MLR) method

;

thermal degradation kinetics

;

thermo-analytical study

;

antimicrobial activity

;

Localisation / Location

INIST-CNRS, Cote INIST : 13622 A, 35400019035766.0320

Nº notice refdoc (ud4) : 24245774



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