Kinetics of the thermal degradation mechanisms in urea-formaldehyde cellulose composites filled with zinc particles

Arshad, Muhammad; Maaroufi, A.; Benavente, Rosario; Pinto, Gabriel

doi:10.1007/s10854-017-6991-6

Cited by 13 publications

(42 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The evaluation of nonisothermal degradation mechanisms of electrically insulating/conducting epoxy/Sn composites by using solid-state kinetic approaches is a continuation of our previous studies about epoxy/Zn and epoxy/Al composites [9,10]. In our previous research works, interesting mechanistic information and new insights into the mentioned composites have been obtained [9,10].…”

Section: Introductionmentioning

confidence: 80%

“…The filler is a commercial powder of b-tin (Sn), delivered by Panreac (Castellar del Vallès, Spain) with about 97% purity, 7.29 g cm 23 density, 15 6 10 lm average particle size, and electrical conductivity of the order of 10 4 S cm 21 . All the composites have been prepared by following the same procedure, as described in the previous studies [9,10]. Metallic powders were introduced in the fluid resin in calculated quantities and dispersed manually in order to obtain the homogeneity.…”

Section: Formation Of Compositesmentioning

confidence: 99%

“…In our previous research works, interesting mechanistic information and new insights into the mentioned composites have been obtained [9,10]. In this study, the nonisothermal degradation kinetics of conducting and nonconducting epoxy/Sn composites will be carried out and the degradation mechanisms will be predicted by advanced reaction model determination methodology.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Thermal degradation mechanisms of epoxy composites filled with tin particles

et al. 2015

Self Cite

View full text Add to dashboard Cite

This article reports an evaluation study of the thermal degradation mechanisms of electrically insulating and conducting epoxy/Sn composites by using solid-state kinetic approaches and structural characterizations.Comparison of the thermoanalytical data of epoxy/Sn composites with pure epoxy shows that the addition of tin in epoxy catalyzes the thermal degradation of epoxy and the catalytic ability of tin depends upon its contents in epoxy. Kinetic modeling of the phenomena elaborates the thermal behaviors of epoxy/Sn composites in terms of the comparison of their activation parameters and reaction models. Friedman's differential and ArshadMaaroufi's generalized linear integral isoconversional methods are used to obtain the variation in activation energies with the advancement of reaction. Advanced reaction model determination methodology is effectively employed to evaluate the reaction mechanisms of epoxy/Sn composites. Kinetic analysis suggests that tin increases the thermal degradation rate of epoxy by lowering the activation energy barrier of reaction. It is worth noticing that the parameters of the probable reaction model, i.e., Sest ak Berggren have been found nearly the same for pure epoxy and epoxy/Sn composites, revealing weak epoxy-tin interactions in the composites. The mechanistic information obtained by kinetic analysis fairly agrees with the scanning electron microscopy and X-ray diffraction results.

show abstract

Section: Introductionmentioning

confidence: 80%

Section: Formation Of Compositesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Thermal degradation mechanisms of epoxy composites filled with tin particles

et al. 2015

Self Cite

View full text Add to dashboard Cite

show abstract

“…The innovative kinetic approach has also been applied to predict the thermal degradation mechanisms in urea-formaldehyde cellulose composites filled with metal particles (UFC/metal composites; while, metal = Al, Zn, Sn) [21][22][23]. The isoconversional kinetic analysis of UFC/metal composites reveals that their thermal degradation might follow intricate reaction pathways.…”

Section: Discussionmentioning

confidence: 99%

“…The obtained set of mechanistic information shows that the thermal degradation of UFC resin follows multistep reaction mechanisms pursuing several parallel/consecutive reactions with predominantly nucleation/growth pathways. A detailed interpretation of the obtained kinetic parameters along with the dependence of reaction mechanism of UFC resin on the nature/contents of metal particles (especially zinc and aluminum) has also been given and discussed [21][22][23].…”

Section: Discussionmentioning

confidence: 99%

Recent Progress in Kinetics of Thermal Degradation Mechanisms in Polymer Composites

Maaroufi¹

2017

MOJPS

View full text Add to dashboard Cite

This mini-review encompasses the most recent developments in the field of condensed phase kinetics with special emphasis on prediction of thermal degradation mechanisms in polymer composites. In this context, it initially reviews, in a brief way, the pre-existing reaction model determination approaches along with their advantages and disadvantages. Then, the advanced kinetic approach to reaction mechanisms, which takes into consideration the dependence of activation energy of system on degree of reaction progress, is detailed. Some of the important applications of the advanced kinetic approach on complicated thermal degradation mechanisms in epoxy and (particularly in) urea-formaldehyde cellulose (UFC) composites filled with metal particles are also discussed. The soundness of the advanced kinetic approach in predicting the thermal degradation mechanisms of polymer composites and its future applications are also taken into consideration.

show abstract

Thermal degradation of urea‐formaldehyde cellulose composites filled with aluminum particles: Kinetic approach to mechanisms

Arshad

Maaroufi

Benavente

et al. 2017

J of Applied Polymer Sci

Self Cite

View full text Add to dashboard Cite

This article reports a study on structural characterization and thermal degradation kinetics of insulating/conducting urea‐formaldehyde cellulose (UFC) composites filled with aluminum particles. Structural characterization of UFC/Al composites carried out by SEM, XRD, and FTIR analyses reveals that composites are fairly homogenous, and the interactions between UFC and aluminum in UFC/Al composites are more probably physical in nature. Measurements of inherent thermal stabilities, probing reaction complexity, and thermal degradation kinetics of UFC and UFC/Al composites have been undertaken by thermogravimetric (TG)/differential thermogravimetric (DTG) analyses under nonisothermal conditions. The integral procedure decompositions temperature (IPDT) elucidates significant thermal stability of UFC, and higher aluminum contents in composites are capable of enhancing the thermal stability of UFC resin. TG/DTG analyses suggest highly complicated thermal degradation profiles of UFC and UFC/Al composites, which consist of various parallel/consecutive reactions. Generalized linear integral isoconversional method has been employed to determine the activation energies of thermal degradation processes. Substantial variations in activation energies of UFC and UFC/Al composites with the advancement of reaction verify their multi‐step reaction pathways. Advanced reaction model determination methodology with the help of a novel kinetic function F(α,T) reveals that the multi‐step thermal degradation of UFC goes to completion by principally following intricate nucleation/growth mechanisms. It is also found that aluminum more likely participates in the thermal degradation of resin and tends to alter its reaction mechanism. Detailed interpretations of the obtained kinetic parameters are given, and their probable physical significances are discussed. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 44826.

show abstract

Kinetics of the thermal degradation mechanisms in urea-formaldehyde cellulose composites filled with zinc particles

Cited by 13 publications

References 38 publications

Thermal degradation mechanisms of epoxy composites filled with tin particles

Thermal degradation mechanisms of epoxy composites filled with tin particles

Recent Progress in Kinetics of Thermal Degradation Mechanisms in Polymer Composites

Thermal degradation of urea‐formaldehyde cellulose composites filled with aluminum particles: Kinetic approach to mechanisms

Contact Info

Product

Resources

About