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optimal composition in synthetic graphite (SG)–phenolic nanocomposites subjected to an in-plane heat flux. Several numerical and analytical studies have been devoted to transient thermal analysis to investigate the effect of main parameters in

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. 2. Ashraf , M. A. , Ashraf , M. , Ali , Q. ( 2010 ) Response of two genetically diverse wheat cultivars to salt stress at different growth stages: leaf lipid peroxidation and phenolic

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.G., Hong, S.P., Hung, M.H.: Removal and bioconversion of phenol in wastewater by thermostable b-tyrosinase. Enzyme Microb. Technol. 19 , 374–377 (1996). Hung M.H. Removal and

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Thermochemical characterization of phenolic resins

Thermogravimetric and pyrolysis-GC studies

Journal of Thermal Analysis and Calorimetry
Authors: M. Rao, S. Alwan, K. Scariah, and K. Sastri

Abstract  

Phenol-formaldehyde resins (I andII), synthesised at a monomer feed ratio of F/P = 1.0 and 1.5, were cured at 130‡C for 48 h without any catalyst (Ia, IIa), with 0.1% ferric acetyl acetonate (Ib, IIb) and with 0.1 %p-toluenesulphonic acid (Ic, IIc). Thermogravimetric studies indicate that the decomposition of the cured products takes place in two distinct stages: The first stage (T=340–480‡C; α=0.045–0.16; δE 1 = 140±10-239±24 and 60±3–65±2 kJ mol−1 for seriesI andII respectively) was attributed to the predominant cleavage of formal linkages. The main stage decomposition (T=460–640‡C; α=0.114–0.393; δE 2=115±8–169±8 and 91±6–103±7 kJ mol−1 for seriesI andII respectively) was attributed to reactions leading to graphitisation. δE 2 values were correlated to the extent of cure as measured by IR spectroscopy and pyrolysis-GC. The effect of catalysts on the extent of cure and on the activation energy was evaluated.

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References Albishi , T. , John , J.A. , Al-Khalifa , A.S. & Shahidi , F. ( 2013 ): Antioxidative phenolic constituents of skins of

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References 1. Atanassova , M. , Georgieva , S. , Ivancheva , K. ( 2011 ) Total phenolic and total flavonoid contents, antioxidant capacity and biological

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. 1st ed., CIRAD ORSTOM , France . pp. 109 – 139 . B alasundram , N. , S undram , K. & S amman , S. ( 2006 ): Phenolic compounds in plants and agri-industrial byproducts

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Acta Alimentaria
Authors: Đ. Malenčić, B. Kiprovski, V. Bursić, G. Vuković, B. Ćupina, and A. Mikić

. Baginsky , C. , Pena-Neira , A. , Caceres , A. , Hernandez , T. , Estrella , I. , Morales , H. & Pertuze , R. ( 2013 ): Phenolic compound composition in immature seeds of fava bean (Vicia faba L.) varieties cultivated in

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., Piližota, V., Hribar, J. & Simčič M. (2009a): Total phenol content and antioxidant activity of water solutions of plant extracts. Croat. J. Fd Sci. Technol. , 1 , 1–7. Simčič M

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Introduction Phenol is a chemical product mainly of anthropogenic origin, since in nature it can be found only in the decomposition of organic remains, such as in resins or in wood combustion. The main sources are refineries

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