Search Results - "BUDRUGEAC, P"

Comparison between model-based and non-isothermal model-free computational procedures for prediction of conversion-time curves of calcium carbonate decomposition by Budrugeac, P.

“…•Kinetics of thermal decomposition of CaCO3.•Model-based and non-isothermal model-free methods for thermal behavior prediction.•Checking these methods for…”
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Estimating errors in the determination of activation energy by nonlinear methods applied for thermoanalytical measurements performed under constant heating rates by Budrugeac, P.

“…•Non-isothermal data recorded at several heating rates.•Application of linear and nonlinear isoconversional methods.•Errors of activation energy determined by…”
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Applicability of non-isothermal model-free predictions for assessment of conversion vs. time curves for complex processes in isothermal and quasi-isothermal conditions by Budrugeac, P.

“…► The applicability of model-free and model-fitting predictions methods for complex processes was critically analyzed. ► The predictions of quasi-isotherms of…”
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Kinetics of the complex process of thermo-oxidative degradation of poly(vinyl alcohol) by Budrugeac, P.

“…The thermo-oxidative degradation of poly(vinyl alcohol) (PVA) has been investigated by TG+DTG+DTA simultaneous analysis performed in static air atmosphere, at…”
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An iterative model-free method to determine the activation energy of non-isothermal heterogeneous processes by Budrugeac, P.

“…A new iterative model-free (isoconversional) method with integration over a given range of conversion for determination of the activation energy using…”
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Theory and practice in the thermoanalytical kinetics of complex processes: Application for the isothermal and non-isothermal thermal degradation of HDPE by Budrugeac, P.

“…The criterion according to which the best mechanism of a complex process and the associated kinetic parameters correspond to the best fitting of TG and DTG…”
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Some methodological problems concerning the kinetic analysis of non-isothermal data for thermal and thermo-oxidative degradation of polymers and polymeric materials by Budrugeac, P.

“…The procedures used in some very recent works for evaluation of the kinetic parameters from non-isothermal data corresponding to thermal and thermo-oxidative…”
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An iterative model-free method to determine the activation energy of heterogeneous processes under arbitrary temperature programs by Budrugeac, P.

“…► A new iterative model-free method using data recorded under arbitrary temperature programs. ► Checking the suggested method for simulated data. ►…”
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Application of model-free and multivariate non-linear regression methods for evaluation of the thermo-oxidative endurance of a recent manufactured parchment by Budrugeac, P.

“…The thermo-oxidative degradation of a parchment recent manufactured from a goat skin has been investigated by TG/DTG, DSC simultaneous analysis performed in…”
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The kissinger law and the ikp method for evaluating the non-isothermal kinetic parameters by BUDRUGEAC, P

“…The following problems concerning the apparent compensation effect (CE) (lnA=a+bE, where A is the pre-exponential factor, E is the activation energy, a and b…”
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Critical considerations on the Augis and Bennett method for evaluating the crystallization activation energy by means of non-isothermal data by Budrugeac, P.

“…The problems resulting from deriving the equation underlying the Augis and Bennett method (J. A. Augis, J. E. Bennett, J. Therm. Anal., 13 (1978) 183) often…”
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Applicability of the kissinger equation in thermal analysis : Revisited by BUDRUGEAC, P, SEGAL, E

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Application of isoconversional and multivariate non-linear regression methods for evaluation of the degradation mechanism and kinetic parameters of an epoxy resin by Budrugeac, P., Segal, E.

“…The thermo-oxidative degradation of an epoxy resin obtained by curing of an industrially produced DGEBA mixture with 4,4′-methylene-dianiline (MDA) and used as…”
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The use of thermal analysis methods for conservation state determination of historical and/or cultural objects manufactured from lime tree wood by Budrugeac, P., Emandi, Ana

“…The TG, DTG and DSC methods were used for investigation of the thermo-oxidative degradation in static air atmosphere and oxygen flow of some sorts of lime tree…”
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The use of thermal analysis methods for authentication and conservation state determination of historical and/or cultural objects manufactured from leather by Budrugeac, P., Cucos, Andrei, Miu, Lucreţia

“…Leather products have been useful materials since the dawn of human history. Many leathers objects are valuable treasures due to the history they represent,…”
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Assessment of collagen-based materials which are supports of cultural and historical objects by Popescu, C., Budrugeac, P., Wortmann, F.-J., Miu, L., Demco, D.E., Baias, M.

“…The thermal degradation of collagen-based materials, viz. collagen, recently manufactured parchments and tanned leathers, a heritage parchment and patrimonial…”
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Study of deterioration of historical parchments by various thermal analysis techniques complemented by SEM, FTIR, UV-Vis-NIR and unilateral NMR investigations by Badea, Elena, Miu, Lucreţia, Budrugeac, P., Giurginca, Maria, Mašić, A., Badea, Nicoleta, Della Gatta, G.

“…A comprehensive investigation has been made of a set of 14 th to 16 th -century parchment bookbindings from the Historical Archives of the City of Turin…”
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Dynamic mechanical analysis (DMA) of new and historical parchments and leathers: Correlations with DSC and XRD by Cucos, A., Budrugeac, P., Miu, L., Mitrea, S., Sbarcea, G.

“…▶ New and old parchments and leathers were investigated by DMA, DSC and XRD. ▶ These materials exhibit a melting process in the temperature range 210–260 °C. ▶…”
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Characterization of exfoliated graphite for heavy oil sorption by Hristea, Gabriela, Budrugeac, P.

“…In this paper are reported some experimental data related to the influence of preparation regimes and characteristics of exfoliated graphite based sorbents…”
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On the use of the model-free way method for kinetic analysis of thermoanalytical data – advantages and limitations by Budrugeac, P.

“…•Application of model-free way (MFW) methods for simulated and experimental data.•Dependence of the kinetic triplet obtained by MFW methods on the set of…”
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