Synthesis and biological activity of chlorinated polyketone resins

Patel, N. Z.; Patel, J. N.; Ray, Ramesh M.; Patel, R. M.

doi:10.1002/apmc.1991.051920109

Cited by 15 publications

(4 citation statements)

References 4 publications

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“…The fungal cultures were harvested after 48 h, and the dry cell mass was determined gravimetrically. The details of the experimental procedure are reported elsewhere 15, 16…”

Section: Methodsmentioning

confidence: 99%

Synthesis, characterization, and antimicrobial activity of some novel poly(ether ketone)s

Patel

Ray

et al. 2003

J. Polym. Sci. A Polym. Chem.

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Low molecular weight poly(ether ketone)s were synthesized from phenol, 1,4-phenylenedioxy diacetylchloride, chloroacetylchloride, and dichloroalkanes [1,2dichloroethane and dichloromethane] by a Friedel-Crafts reaction with anhydrous aluminum chloride as a catalyst and carbon disulfide as a solvent. The conditions for the preparation of the poly(ether ketone)s and the chlorine contents obtained with the Carius method were examined, and a reaction scheme for each resin was established. The molecular weights and polydispersities of the resins were obtained by gel permeation chromatography. The polyketones were characterized by IR spectroscopy. The characteristic frequencies due to different functional groups were assigned. The thermal properties of the resins were studied with thermogravimetry and differential scanning calorimetry. The characteristic temperatures of thermal degradation for the poly(ether ketone)s were evaluated with thermogravimetric analysis. The kinetic parameters for the decomposition reactions of the resins were obtained with Broido and Doyle's method, and the heats of fusion were obtained from differential scanning calorimetry thermograms. The polyketones were thermally stable up to 200°C. All the polyketones were tested for their microbial properties against bacteria, fungi, and yeast. The effect of poly(ether ketone)s on the growth of these microorganisms was investigated, and the polyketones were found to inhibit the growth of the microorganisms to a considerable extent.

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“…The fungal cultures were harvested after 48 h, and the dry cell mass was determined gravimetrically. The details of the experimental procedure are reported elsewhere 15, 16…”

Section: Methodsmentioning

confidence: 99%

Synthesis, characterization, and antimicrobial activity of some novel poly(ether ketone)s

Patel

Ray

et al. 2003

J. Polym. Sci. A Polym. Chem.

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“…A considerable amount of research effort has concentrated on the synthesis of polyketones via Friedel-Crafts reaction (10)(11)(12)(13). The synthesis of such polymers is usually performed by Friedel-Crafts acylation or nucleophilic aromatic displacement, which has been a subject of research for a number of years (7)(8)(9)14). As a result, the preparation of various polyketones and investigations of their properties have been reported by many workers (10)(11)(12)(13)(14)(15)(16)(17).…”

Section: Introductionmentioning

confidence: 99%

“…Their property set is positioned in the area of polyamides and polyacetals. Friedel-Crafts polymers formed on polycondensation of 4,4 -dichloromethyldiphenyl ether with benzene, toluene, isomeric chlorotoluenes and xylenes, phenol and isomeric cresols have been reported (7)(8)(9). A considerable amount of research effort has concentrated on the synthesis of polyketones via Friedel-Crafts reaction (10)(11)(12)(13).…”

Section: Introductionmentioning

confidence: 99%

New Polymer Syntheses Part 56: Novel Friedel-Crafts Polyketones Containing Naphthalene Moiety: Synthesis, Characterization and Antimicrobial Activity

Hussein

Abdelrahman

Aly

2012

Journal of Macromolecular Science, Part A

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Novel Friedel-Crafts polyketones containing naphthalene moiety were synthesized via the electrophilic Friedel-Crafts polycondensation method. The desired polyketones were obtained by the interaction of newly synthesized dinaphthylidenecycloalkanone monomers with different aliphatic and aromatic diacid chlorides. The structures of new monomers and polymers were confirmed by elemental and spectral analyses, besides X-ray single crystal data for the two new monomers. The new polyketones were characterized by solubility, viscometry, thermal properties, scanning electron microscopy and antimicrobial activity test. All the polyketones were soluble in formic acid as protonic solvent giving yellowish to brown colors. Some of the polyketones were partially soluble in n-hexane, benzene and chloroform. The thermal properties of those polymers were evaluated by TGA; DTG and DTA measurements. The desired polyketones have high thermal stability at T 10 except polymer 3 b which have low T 10 value. FDT for all polyketones is nearly completed at around 522-677 • C. The morphological properties of polyketone 2 b were tested by SEM measurements. The synthesized monomers and polymers were screened for their antibacterial and antifungal activities. They showed a moderated antibacterial activity against tested Gram-negative and Gram-positive bacteria and no significant influence against the selected fungi species except monomer 1 b and polymers 2 a , 3 b .

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“…In particular, one should also mention chemical resistance, stability under hydrolysis conditions, impact toughness, flame resistance without additives containing halides or red phosphor, and short cycle times in injection molding 1–3. Friedel–Crafts polymers, formed by polycondensation of 4,4′‐dichloromethyldiphenyl ether with benzene, toluene, isomeric chlorotoluenes and xylenes, phenol, and isomeric cresols, have been reported 4–6. Recently, a considerable amount of research effort has concentrated on the synthesis of polyketones via the Friedel–Crafts reaction 7–12…”

Section: Introductionmentioning

confidence: 99%

New polymer syntheses XXVIII. Synthesis and thermal behavior of new organometallic polyketones and copolyketones based on diferrocenylidenecyclohexanone

Aly

2004

J of Applied Polymer Sci

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ABSTRACT:A new interesting category of organometallic polyketones and copolyketones were synthesized via the Friedel-Crafts reaction through the polymerization of 2,6-[bis (2-ferrocenyl)methylene] cyclohexanone (II) with different diacid chlorides. The model compound was synthesized by reacting the monomer (II) with benzoyl chloride and characterized by 1 H-NMR, IR, and elemental analyses. The polyketones and copolyketones were insoluble in most organic solvents but easily soluble in protic solvents. The thermal properties of these polyketones and copolyketones were evaluated and correlated to their structural units by thermogravimetric analysis and DSC measurements, and they had inherent viscosity of 0.29 -0.52 dI g Ϫ1 . Moreover, the electrical conductivity of one of the polyketones, as a selected example, namely poly [carbonyl-terephthaloyloxy-(2-oxo-1,3-cyclohexanediylidene)methylidyne-ferrocenyl], Va, and copolyketone, VI, was investigated above the temperature range (300 -500 K) and it followed an Arrhenius equation with activation energy 2.09 eV. The morphological properties of selected example of polyketones were determined by scanning electron microscopy.

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Synthesis and biological activity of chlorinated polyketone resins

Cited by 15 publications

References 4 publications

Synthesis, characterization, and antimicrobial activity of some novel poly(ether ketone)s

Synthesis, characterization, and antimicrobial activity of some novel poly(ether ketone)s

New Polymer Syntheses Part 56: Novel Friedel-Crafts Polyketones Containing Naphthalene Moiety: Synthesis, Characterization and Antimicrobial Activity

New polymer syntheses XXVIII. Synthesis and thermal behavior of new organometallic polyketones and copolyketones based on diferrocenylidenecyclohexanone

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