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

Journal of Macromolecular Science Part A (Impact Factor: 0.74). 06/2011; 48(6):482-492. DOI: 10.1080/10601325.2011.573367
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    ABSTRACT: A copolymer resin, p-chloroacetophenone oxime-furfuraldehyde (CAOFU), and a terpolymer resin, p-chloroacetophenone oxime-formaldehyde-benzoic acid (CAOFUBA), were synthesized in the presence of hydrochloric acid as catalyst. The structures of copolymer and terpolymer were established by FT-IR and 1H NMR techniques. Molecular weight and polydispersity index were determined by gel permeation chromatography. The thermal stability was evaluated by thermogravimetric analyses (TGA). Softening temperatures (Ts) of these polymers were obtained from differential scanning calorimetry (DSC). All the synthesized polymers have shown reasonably good antimicrobial activities.
    International Journal of Polymeric Materials 12/2012; 61:1102-1114. · 2.78 Impact Factor
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    ABSTRACT: Radical copolymerization of 2, 4-dinitrophenylaminomaleimide (DNPAMI) with methyl/ethyl/ butyl substituted acrylates were prepared at 65 oC in tetrahydrofuran (THF) solution with azoisobutyronitrile (AIBN) as an initiator. The structures of copolymers were elucidated by FT-IR, 1H NMR and elemental analysis. The copolymer composition was determined from the N/C ratio based on elemental analysis data and with 1H NMR spectroscopy for copolymers using a proton signal attributed to the alkyl (methyl, ethyl or butyl) of substituted acrylates (δ = 0.7–1.4 ppm) and the area of aromatic ring protons (δ = 7.2–7.8 ppm), where the proton/area relationship confirmed the copolymer compositions. The number average molecular weight and polydispersity indices determined by gel-permeation chromatography were ranging from 27.6 to 31.1 kDa and 1.36 to 1.51, respectively. The initial decomposition temperature is about 203 to 211 oC. The thermal behavior can be correlated with the copolymer composition. An increase of the thermal decomposition temperature occurred when the content of acrylate increased. The reasonably good antibacterial and antifungal activities of the copolymers could be ideal candidates for amtimicrobial coating applications.
    malaysian polymer journal. 01/2013; 8(2):18-25.
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    ABSTRACT: The terpolymer resins have been prepared by polycondensation of vanillin (V) and chloro/bromo-substituted acetophenone (CA/BA) with furfural (FU) in the presence of 1 M HCl in 1:1:2 molar proportions. The characterization and structural elucidation of terpolymers were confirmed by FT-IR, pyrolysis GC-MS, and non-aqueous conductometric titration. Activation energy during curing process was determined by the Kissinger method, whereas thermal decomposition was determined by the Ozawa-Flynn-Wall method. Both terpolymer resins have shown excellent antimicrobial activity as compared to the standard ciprofloxacin and amphotericin-B drugs.
    International Journal of Polymeric Materials 01/2012; · 2.78 Impact Factor


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Jun 1, 2014