Poly(styrene‐<i>co</i>‐butyl acrylate) latex‐reinforced polyester nonwoven fabric composites: Thermal and morphological studies

Kumar, M. N. Satheesh; Yaakob, Zahira; Siddaramaiah,

doi:10.1002/app.30518

Cited by 5 publications

(5 citation statements)

References 37 publications

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“…The produced radicals may attack the polyethylene and cause chain scission; thus, the overall E a will be reduced. Higher values of E a were noticed in the final stage, maybe because of the stronger energy needed for the bond scission of the polymer chains 45…”

Section: Resultsmentioning

confidence: 97%

Mechanical properties, morphology, flammability, and thermokinetic investigation of high‐density polyethylene/Jatropha deoiled cake composites

Elshaarani

Yaakob

Zaman

et al. 2012

J of Applied Polymer Sci

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High-density polyethylene (HDPE)/jatropha deoiled cake (JOC) composites were fabricated by melt compounding; the molded specimens were tested for their tensile properties and water absorption. The thermal properties were investigated with thermogravimetry (TG) analysis, differential scanning microscopy (DSC), and limiting oxygen index testing. The degradation kinetic parameters were calculated with the Friedman and Freeman-Carroll models. The morphology of the tensile fractured composites was investigated by scanning electron microscopy. The results show that the introduction of JOC significantly reduced the tensile strength, percentage elongation at break, and modulus. On the one hand, JOC increased the water uptake. The TG and differential TG of JOC showed that the thermal degradation took place in two stages. The neat HDPE revealed a single degradation stage, whereas the blend showed three degradation stages. The composites' initial degradation temperature decreased; however, the residue chars increased with increasing JOC content. The activation energies (E a 's) were lower in the case of the blends than that corresponding to HDPE. The DSC results showed decreases in the melting temperature and degree of crystallinity of the composites. A considerable enhancement of the flameretardant properties was observed for the composites. These experimental results suggest a synergetic effect caused by the coprocessing of the two materials together. V C 2012 Wiley Periodicals, Inc. J Appl Polym Sci 126: E78-E88, 2012

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Section: Resultsmentioning

confidence: 97%

Mechanical properties, morphology, flammability, and thermokinetic investigation of high‐density polyethylene/Jatropha deoiled cake composites

Elshaarani

Yaakob

Zaman

et al. 2012

J of Applied Polymer Sci

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“…It is evident that the IPDT values increase with an increase in the heating rate. Additionally, the thermal stability of PECA is lower than that of poly[styrene‐ co ‐(butyl acrylate)] 58 and natural and modified polysaccharides 59 …”

Section: Resultsmentioning

confidence: 99%

Thermal stability and non‐isothermal kinetics of poly(ethyl cyanoacrylate) nanofibers

Georgieva

Simeonova

Turmanova

et al. 2022

Polymer International

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A thermogravimetric study of poly(ethyl cyanoacrylate) nanofibers was carried out at five heating rates with a linear increase in the temperature in a nitrogen atmosphere. The data provided by the thermogravimetric study were used to evaluate the kinetics of the degradation process using three isoconversional methods. Considering that the kinetic parameters of the process depend on the reaction mechanism, various approaches were applied in order to determine the most probable mechanism function. In this respect, the mechanism of thermal degradation of poly(ethyl cyanoacrylate) is a phase boundary reaction with cylindrical symmetry (F 0.5 function) as demonstrated by the z(⊍) master plots method, iso-temperature method and isoconversional method. On their basis, the values of the kinetic triplet (E a , A and the shape of the most appropriate f(⊍) function) of the process were obtained, and subsequently the thermodynamic functions of the activated complex formation were calculated. The thermal stability of the polymer was predicted according to the integral procedure decomposition temperature.

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“…19 In this paper, the activation energy for decomposition E a has been calculated from the slopes of the best fit straight lines obtained when the plots using two models, namely, Horowitz-Metzger 20 and Coats-Redfern 21 methods, which are the most acceptable and commonly are used to obtain kinetic data. 7,14,16,19,22 Nevertheless, there are still some doubts about their accuracy for determining the kinetic parameters 19 because their lack of accuracy in the estimation of the temperature integral. However, the most common application of these approximations is the determination of the activation energy and not the computation of the temperature integral.…”

Section: Thermogravimetric Analysismentioning

confidence: 99%

“…6 Because thermal stability is related to both the initial degradation temperature and the degradation rate of a polymer, the determination of activation energy is very important. 7,8 Degradation and stabilisation of polymers have been studied from both fundamental and practical points of view for a long time. 9 The derivation of kinetic data in the study of polymer decomposition has received increasing attention in the last decade.…”

Section: Introductionmentioning

confidence: 99%

“…To study how the decomposition temperature is related to the structure of materials, TGA is widely used to determine the range of service temperature due to its simplicity to analyse the information obtained from a simple thermogram 6. Because thermal stability is related to both the initial degradation temperature and the degradation rate of a polymer, the determination of activation energy is very important 7, 8…”

Section: Introductionmentioning

confidence: 99%

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Studies on thermal–oxidative degradation behaviours of raw natural rubber: PRI and thermogravimetry analysis

Galiani

Malmonge

Soares

et al. 2013

Plastics, Rubber and Composites

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Thermal-oxidative degradation behaviours of raw natural rubber (NR) have been investigated by using thermogravimetry analysis in inert and oxidative atmospheres and the plasticity retention index (PRI). The activation energy E a , was calculated using Horowitz-Metzger and Coats-Redfern methods and compared with PRI. The E a values obtained by each method were in good agreement with each other. The June samples are the least stable rubbers among the studied ones, whereas February samples exhibited the highest values of activation energy, therefore in agreement with the PRI behaviour, which indicates that the thermo-oxidative stability of the June samples are the poorest during the thermo-oxidative degradation reaction. Natural rubber is a product of biological origin, and thus these variations in the values of thermal behaviour and PRI might be related to the genetic differences and alterations of climatic conditions that act directly on the synthesis of non-rubber constituents, which are generally reflected in latex and rubber properties.

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Poly(styrene‐co‐butyl acrylate) latex‐reinforced polyester nonwoven fabric composites: Thermal and morphological studies

Cited by 5 publications

References 37 publications

Mechanical properties, morphology, flammability, and thermokinetic investigation of high‐density polyethylene/Jatropha deoiled cake composites

Mechanical properties, morphology, flammability, and thermokinetic investigation of high‐density polyethylene/Jatropha deoiled cake composites

Thermal stability and non‐isothermal kinetics of poly(ethyl cyanoacrylate) nanofibers

Studies on thermal–oxidative degradation behaviours of raw natural rubber: PRI and thermogravimetry analysis

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