Thermal and spectroscopic analysis of stabilization effect of copper complexes in EPDM

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• 作者：Traian Zaharescu ; Diana-Carolina Ilies…
• 关键词：Thermal stability ; Chemiluminescence ; Stabilization ; Oxidative degradation ; EPDM
• 刊名：Journal of Thermal Analysis and Calorimetry
• 出版年：2016
• 出版时间：January 2016
• 年：2016
• 卷：123
• 期：1
• 页码：231-239
• 全文大小：974 KB
• 参考文献：1.Cibulková Z, Česná A, Šimon P, Uhlár J, Kosár K, Lehocký P. Stabilization effect of potential antioxidants on the thermooxidation stability of styrene-butadiene rubber. J Therm Anal Calorim. 2011;105(2):607–13.CrossRef
  2.Navarro R, Audouin L, Verdu J. Reactions of antioxidants with molecular oxygen. Part III. Influence of phenolic stabilizer structures on their oxidation in an inert matrix. Polym Degrad Stab. 2011;96(7):1389–96.CrossRef
  3.Rivaton A, Cambon S, Gardette J-L. Radiochemical ageing of ethylene-propylene-diene elastomers. 4. Evaluation of some anti-oxidants. Polym Degrad Stab. 2006;91(1):136–43.CrossRef
  4.Mei XL, Jiao SL, Li XY, Li YC, Cheng Y. Effect of the antioxidants on the stability of poly(vinyl butyral) and kinetic analysis. J Therm Anal Calorim. 2014;116(3):1345–9.CrossRef
  5.Chao MR, Li WM, Wang XB. Thermal decomposition kinetics and anti-oxidant performance of commercial antioxidants. J Therm Anal Calorim. 2015. doi:10.​1007/​10973-015-4525-0 .
  6.Ahmed FA, Shafy M, Abd El-Megeed AA, Hegazi EM. The effect of γ-irradiation on acrylonitrile—butadiene rubber NBR seal materials with different antioxidants. Mater Des. 2012;36:823–8.CrossRef
  7.Peltzer M, Wagner JR, Jiménez A. Thermal characterization of UHMWPE stabilized with natural antioxidants. J Therm Anal Calorim. 2007;87(2):493–7.CrossRef
  8.Koutný M, Václavková T, Matisová-Rychlá L, Rychlý J. Characterization of oxidation process by chemiluminescence: a study of polyethylene with prooxidant additives. Polym Degrad Stab. 2008;93(8):1515–9.CrossRef
  9.Crăciun E, Zaharescu T, Jipa S, Mantsch A. Radiation effects on the stability of epoxy resin modified with titania nanoparticles. Mater Plast. 2011;48(4):426–31 (Bucharest).
  10.Zapata PA, Rabagliati FM, Lieberwirth I, Catalina F, Corrales F. Study on the photodegradation of nanocomposites containing TiO2 nanoparticles dispersed in polyethylene and in poly(ethylene-cooctadecane). Polym Degrad Stab. 2014;109:106–14.CrossRef
  11.Nam WW, Baek SJ, Lee KA, Ahn BT, Muller JG, Burrows CJ, Selverstone VJ. Nickel complexes as antioxidants. Inhibition of aldehyde autoxidation by nickel (II) tetraazamacrocycles. Inorg Chem. 1996;35(23):6632–3.CrossRef
  12.Rajeshirke M, Shah R, Yadav P, Purohit NV. Synthesis and antioxidant activity of metal (II) complexes of isocoumarin derivatives. Der Pharm Sin. 2012;3(2):239–48.
  13.Li Y, Yang Z-Y, Wu J-C. Synthesis, crystal structures, biological activities and fluorescence studies of transition metal complexes with 3-carbaldehyde chromone thiosemicarbazone. Eur J Med Chem. 2010;45(12):5692–701.CrossRef
  14.Wang B-D, Yang Z-Y, Lu M-H, Hai J, Wang Q, Chen Z-N. Synthesis, characterization, cytotoxic activity and DNA binding Ni(II) complex with the 6-hydroxy chromone-3-carbaldehyde thiosemicarbazone. J Organomet Chem. 2009;694(25):4069–75.CrossRef
  15.Setnescu R, Bărcuţan C, Jipa S, Setnescu T, Negoiu M, Mihalcea I, Dumitru M, Zaharescu T. The effect of some thiosemicarbazide compounds on thermal oxidation of polypropylene. Polym Degrad Stab. 2004;85(3):997–1001.CrossRef
  16.Costa L, Gad AM, Camino G, Cameron GG, Qureshi MY. Thermal and thermooxidative degradation of poly(ethylene oxide)—metal salt complexes. Macromolecules. 1992;25(20):5512–8.CrossRef
  17.Osawa Z, Kurisu N, Nagashima K, Nakano K. The effects of transitional metal stearates on the photodegradation of polyethylene. J Appl Polym Sci. 1979;23(12):3583–90.CrossRef
  18.Gorghiu LM, Jipa S, Zaharescu T, Setnescu R, Mihalcea I. The effect of metals on thermal degradation of polyethylenes. Polym Degrad Stab. 2004;85(1):7–11.CrossRef
  19.Nandakumar N, Kurian P. Effect of chemical degradation on the mechanical properties of ethylene-propylene-diene (5-ethylene-2-norbornene) terpolymer-BaSO4 nano composites. Mat Des. 2013;43(1):118–24.CrossRef
  20.Ahmed NM, El-Sabbagh SH. The influence of hybrid phosphate-alumina pigments on properties of ethylene-propylene-diene rubber composites. Mat Des. 2011;32(1):303–21.CrossRef
  21.Cibulková Z, Šimon P, Lehocký P, Kosár K, Chochulová A. DSC study on antioxidant activity of selected p-phenylenediamines in styrene-butadiene rubber. J Therm Anal Calorim. 2009;97(2):535–40.CrossRef
  22.Parra DF, do Rosário Matos J. Some synergetic effects of antioxidants in natural rubber. J Therm Anal Calorim. 2002;67(2):287–94.CrossRef
  23.Bessmann S, Reissinger M, Grabmayer K, Wallner G, Nitsche D, Brechberger W. Analytical evaluation of the performances of stabilization system for polyolefin materials. Part I. interaction between hindered amine light stabilizers and phenolic antioxidants. Polym Degrad Stab. 2014;110:489–508.
  24.Ilies D-C, Pahontu E, Shova S, Georgescu R, Stanica N, Olar R, Gulea A, Rosu T. Synthesis, characterization, crystal structure and antimicrobial activity of copper(II) complexes with a thiosemicarbazone derived from 3-formyl-6-methylchromone. Polyhedron. 2014;81:123–31.CrossRef
  25.Allen NS, Hoang E, Liauw CM, Edge M, Fontan E. Influence of processing aids on the thermal and photostabilisation of HDPE with antioxidant blends. Polym Degrad Stab. 2001;72(1):367–76.CrossRef
  26.Zaharescu T, Jipa S. Radiochemical modifications in polymers. In: Polymer solids and polymer melts. Arndt K.-F, Lechner MD, editors Landolt-Börnstein series, vol. VIII/6 C2, ch. II. Heidelberg: Springer; 2013. p. 93–184.
  27.Nguyen DT, Le TH, Bui TTT. Antioxidant activities of thiosemicarbazones from substituted benzaldehydes and N-(tetra-O-acetyl-b-d -galactopyranosyl) thiosemicarbazide. Eur J Med Chem. 2013;60:199–207.CrossRef
  28.Lobana TS, Sharma R, Bawa G, Khanna S. Bonding and structure trends of thiosemicarbazone derivatives of metals—an overview. Coord Chem Rev. 2009;253(7–8):977–1055.CrossRef
  29.Kuzer F, Wilkinson M. The chemistry of carbohydrazide and thiocarbohydrazide. Chem Rev. 1970;70(1):111–49.CrossRef
  30.Zaharescu T, Giurginca M, Jipa S. Radiochemical oxidation of ethylene-propylene elastomers in the presence of some phenolic antioxidants. Polym Degrad Stab. 1999;63(2):245–51.CrossRef
  31.Assink RA, Celina M, Gillen KT, Clough RL, Alam TM. Morphology changes during radiation-thermal degradation of polyethylene and an EPDM copolymer by 13C NMR spectroscopy. Polym Degrad Stab. 2001;73(2):355–62.CrossRef
  32.Rychlý J, Matisová-Rychlá A, Tiemblo P, Gomez-Elvira J. The effect of physical parameters of isotactic polypropylene on its oxidisability measured by CL method. Contribution to the spreading phenomenon. Polym Degrad Stab. 2001;71(2):253–60.CrossRef
  33.Gijsman P, Hennekens J. The mechanism of the low-temperature oxidation of polypropylene. Polym Degrad Stab. 1993;42(1):95–105.CrossRef
  34.Kissinger HE. Reaction kinetics in differential thermal analysis. Anal Chem. 1957;59(11):1702–6.CrossRef
  35.Jung C-H, Kim D-K, Suh D-H, Nho Y-C, Kang PH, Ganesan R. Preparation of polymer/POSS nanocomposites by radiation processing. Radiat Phys Chem. 2009;78(7–8):517–20.
  36.Stelescu MD, Manaila E, Craciun G. Vulcanization of ethylene-propylene-terpolymer-based rubber mixtures by radiation processes. J Appl Polym Sci. 2013;128(4):2325–36.CrossRef
  
• 作者单位：Traian Zaharescu (1)
  Diana-Carolina Ilies (2) (3)
  Tudor Roşu (2)
  
  1. INCDIE ICPE CA, 313 Splaiul Unirii, 030138, Bucharest, Romania
  2. Faculty of Chemistry, University of Bucharest, 23 Dumbrava Roşie Street, 020462, Bucharest, Romania
  3. Faculty of Pharmacy, University of Medicine and Pharmacy “Carol Davila”, 6 Traian Vuia Street, 020956, Bucharest, Romania
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Sciences
  Polymer Sciences
  Physical Chemistry
  Inorganic Chemistry
  Measurement Science and Instrumentation
  
• 出版者：Akad茅miai Kiad贸, co-published with Springer Science+Business Media B.V., Formerly Kluwer Academic
• ISSN：1572-8943

文摘

The thermal stabilization effect of copper complexes on ethylene-propylene-diene terpolymer (EPDM) is studied during an accelerated degradation of polymer samples by their exposure to γ(137Cs)-radiation. These complexes of Cu(II) with two Schiff base ligands provided an efficient improvement in the stabilization of basic polymer. For the evaluation of improvement action of inorganic additive on thermal behavior of EPDM, the calculation of carbonyl and hydroxyl indexes and the radiochemical yields of corresponding radiolysis products prove the long-term stability of EPDM. Isothermal and nonisothermal chemiluminescence investigations were also accomplished, and the protection proficiencies of studied additives are compared by means of kinetic features of degradation. The activation energies required by the oxidation of polymer substrate were calculated, and their values are significant higher in comparison with the similar value found for pristine EPDM. The stabilized polymer is assisted by the interaction between mobile protons of ligands and hydrocarbon free radicals.