Kinetic analysis of the process of melamine pyrophosphate synthesis

Nowak, M.; Cichy, B.; Kużdżał, Ewa

doi:10.1007/s10973-015-5093-z

Cited by 3 publications

(4 citation statements)

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“…3 mg. Previous studies [26] have indicated that for the significance level of c = 0.05, no effect of the sample mass on the value of activation energy of the melamine phosphate condensation has been found within the tested range of mass (up to 10 mg).…”

Section: Methodsmentioning

confidence: 78%

“…Standard errors were calculated, and confidence intervals were determined by the t Student test for c = 0.05, as in [26]. Table 3 lists the results obtained, and Fig.…”

Section: Methodsmentioning

confidence: 99%

“…Earlier investigations of thermal decomposition of melamine phosphate focused mainly on melamine pyrophosphate preparation and involved TG/DTG techniques [8,22,25]. In previous work, we determined kinetic parameters of the first stage of condensation (formation of melamine pyrophosphate) with the use of TG/DTG method [26]. In this work, to determine kinetic relations of two subsequent stages of melamine polyphosphate synthesis, we applied differential scanning calorimetry (DSC).…”

Section: Introductionmentioning

confidence: 99%

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Kinetics of melamine phosphate thermal decomposition in DSC studies

Nowak

Cichy

Kużdżał

2016

J Therm Anal Calorim

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This paper presents the results of study of the kinetics of two-stage condensation of melamine orthophosphate to melamine pyrophosphate and subsequently to melamine polyphosphate. The investigations were conducted under non-isothermal conditions and at constant rate of sample heating. Five different heating rates were applied: 40, 20, 10, 5, 2 K min. The activation energy of the process was determined using the approximate Kissinger method and the isoconversional Kissinger-Akahira-Sunose method. The thus determined activation energy is largely dependent on the extent of conversion, indicating the complexity of analyzed process. A complete analysis of the process was presented. Presented calculation of the full kinetic models was best described by stage I equation F1 Mampel and stage II Avrami-Erofeev equation A2. These equations have the best statistical fit. Theoretical kinetic curves were compared with the experimental data, achieving high compliance of theoretical curves with the experimental data.

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Section: Methodsmentioning

confidence: 78%

“…Standard errors were calculated, and confidence intervals were determined by the t Student test for c = 0.05, as in [26]. Table 3 lists the results obtained, and Fig.…”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Kinetics of melamine phosphate thermal decomposition in DSC studies

Nowak

Cichy

Kużdżał

2016

J Therm Anal Calorim

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“…49,50 Furthermore, there are two T max for MP at 408 C and 570 C, which could be assigned to the decomposition of melamine pyrophosphate and melamine polyphosphate produced during the dehydration process. [51][52][53] The decomposition of melamine pyrophosphates and melamine polyphosphates occured during the dehydration proceeds with the evolution of ammonia due to deamination and some water as conrmed by the evolved gas analysis (Fig. S3A and B †).…”

Section: Thermal Behaviour and Ammability Properties Of Mwpu Foamsmentioning

confidence: 99%

Liquefaction of waste pine wood and its application in the synthesis of a flame retardant polyurethane foam

et al. 2017

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The utilization of sustainable forestry waste resources in the production of polyurethane (PU) foam is a promising green alternative to the use of un-sustainable resources. In this work, we report the liquefaction of waste pine wood at different reaction temperatures and its application in synthesizing a melamine phosphate modified wood type polyurethane foam (designated as MWPU). Our strategy was to obtain liquefied pine-based polyol at an optimum reaction temperature and apply the polyol in

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