Thermal decomposition mechanisms common to polyurethane, epoxy, poly(diallyl phthalate), polycarbonate and poly(phenylene sulfide)

Erickson, Kenneth L.

doi:10.1007/s10973-006-8218-6

Cited by 52 publications

(32 citation statements)

References 51 publications

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“…7 are very similar to the ones shown for the epoxy in both Fig. 8(a) and [30] for its thermal decomposition. Furthermore, from the comparison of the DSC curve in Fig.…”

Section: Thermal Analysissupporting

confidence: 83%

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Preparation of capsules containing rejuvenators for their use in asphalt concrete

García

Schlangen

Ven

et al. 2010

Journal of Hazardous Materials

199

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“…7 are very similar to the ones shown for the epoxy in both Fig. 8(a) and [30] for its thermal decomposition. Furthermore, from the comparison of the DSC curve in Fig.…”

Section: Thermal Analysissupporting

confidence: 83%

“…In the DSC plot of the capsules there are three different main endothermic peaks. Spectra obtained from TGA and DSC are the superposition of the spectra of the decomposition products [30] and therefore the different peaks can be identified with TGA and DSC scans of the different materials in the capsules (Fig. 7).…”

Section: Thermal Analysismentioning

confidence: 99%

Preparation of capsules containing rejuvenators for their use in asphalt concrete

García

Schlangen

Ven

et al. 2010

Journal of Hazardous Materials

199

View full text Add to dashboard Cite

“…Erickson studied the thermal degradation of epoxy at 340°C. The evolution of phenol, 4‐isopropylphenol, bisphenol A, and 4‐t‐butyl‐ o ‐cresol indicate that bond scission involving the bisphenol A moiety in the epoxy is a major decomposition mechanism [52]. The principal characteristics and products of thermal degradation of a commercial ER prepared by the reaction of bisphenol A with epichlorhydrin have been studied by Grassie et al [53].…”

Section: Resultsmentioning

confidence: 99%

Epoxy composites based on inexpensive char filler obtained from plastic waste and natural resources

et al. 2013

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In this study, plastic [polyethylene terephthalate (PET)] waste was recycled as raw material for the preparation of diglycidyl ether of bisphenol A-type epoxy composite materials. The other inexpensive fillers used to prepare the composites were wood shavings char and pine cone char (PCC), obtained from natural resources. The thermogravimetric analysis showed that plastic waste char (PWC) and PCC can significantly improve the thermal stability of neat epoxy resin at temperatures above 3008C. The best thermal and electrical conductivity results were obtained with PWC. The residual weight of the composite with 30 wt% PWC was 69%. Surface hardness, Young's modulus, and tensile strength of the composites were higher than those with a pure epoxy polymer matrix. The composite morphology was characterized by X-ray diffraction and scanning electron microscopy. POLYM. COMPOS., 34:500-

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“…Em atmosfera oxidante, estes produtos podem se decompor, gerando inúmeros compostos voláteis. Já na ausência de oxigênio a decomposição do policarbonato resulta na formação de resíduos de material reticulado [21,22,23]. O mecanismo de decomposição térmica do policarbonato é representado na Figura 8.…”

Section: Discussionunclassified

Influência de colorantes na degradação termo-oxidativa do policarbonato

Saron¹,

Felisberti

2009

Matéria (Rio J.)

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RESUMOCorantes e pigmentos são incorporados aos polímeros principalmente para melhorar suas propriedades estéticas. Porém, estes aditivos podem afetar a estabilidade térmica e fotoquímica do material. Este trabalho teve como objetivo estudar a influência de diferentes classes de colorantes sobre a estabilidade termo-oxidativa do policarbonato (PC), empregando os pigmentos à base de diazo de condensação e vanadato de bismuto e os corantes do tipo antraquinona e ftalocianina de cobre. Para tanto, foram realizados ensaios termogravimétricos no modo dinâmico em diferentes taxas de aquecimento e avaliadas as taxas de conversão, determinadas pela derivação das curvas termogravimétricas, e as energias de ativação, determinadas segundo o método de FLYNN e WALL. A análise da taxa de conversão revelou que a decomposição do PC contendo ou não colorantes ocorre em três etapas principais, porém a velocidade nestas etapas para o PC com colorantes é, na maioria dos casos estudados, superior à taxa de decomposição do PC puro. Isto indica que os colorantes estudados aceleram a degradação do PC. Entretanto, a energia de ativação calculada segundo o método de FLYNN e WALL não apresentou a mesma tendência observada nos resultados obtidos a partir das taxas de decomposição, sugerindo que a decomposição do PC não deve ser regida por uma cinética de primeira ordem, conforme se baseia o modelo de FLYNN e WALL.Palavras-chaves: policarbonato, decomposição térmica, colorantes, energia de ativação. Influence of colorants on thermo-oxidative degradation of polycarbonate ABSTRACTDyes and pigments are additives used in polymer systems to change the original coloration of the material. However, the thermal and photochemical stability of the polymer is frequently affected with the incorporation of these additives. The aim of this work was to study the influence of different colorant types (bismuth vanadate pigment, condensation diazo pigment, Cu-phthalocyanine dye and anthraquinone dye) on the thermo-oxidative stability of polycarbonate. Dynamic thermogravimetric analysis at different heating rate were carried out to evaluate the decomposition behavior of the material and to calculate the activation energy related to the decomposition process according to the FLYNN and WALL method. The curves of conversion rate showed that the polycarbonate with or without colorants present three steps of thermal decomposition, however the decomposition rate in theses steps for polycarbonate containing colorants is almost always higher than in polycarbonate without colorants. This indicates that the colorants accelerate the polycarbonate decomposition. On the other hand, the activation energy did not present the same behavior found to curves of conversion rate, suggesting that the decomposition reaction of polycarbonate does not follow a first order kinetic such as is based the FLYNN and WALL method.Keywords: polycarbonate, thermal decomposition, colorants, activation energy. INTRODUÇÃODurante todo o ciclo de vida útil os polímeros são submetidos a diversas con...

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Thermal decomposition mechanisms common to polyurethane, epoxy, poly(diallyl phthalate), polycarbonate and poly(phenylene sulfide)

Cited by 52 publications

References 51 publications

Preparation of capsules containing rejuvenators for their use in asphalt concrete

Preparation of capsules containing rejuvenators for their use in asphalt concrete

Epoxy composites based on inexpensive char filler obtained from plastic waste and natural resources

Influência de colorantes na degradação termo-oxidativa do policarbonato

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