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Thermal degradation of random copolyesters based on 1,4-butanediol, terepthalic acid and different aliphatic dicarboxylic acids
dc.contributor.author | Heidarzadeh, Nina |
dc.contributor.author | Mehdi Rafizadeh, Mehdi |
dc.contributor.author | Faramarz Afshar Taromi, Faramarz Afshar |
dc.contributor.author | Valle Mendoza, Luis Javier del |
dc.contributor.author | Franco García, María Lourdes |
dc.contributor.author | Puiggalí Bellalta, Jordi |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament d'Enginyeria Química |
dc.date.accessioned | 2017-07-07T07:57:31Z |
dc.date.available | 2017-07-07T07:57:31Z |
dc.date.issued | 2017-08-10 |
dc.identifier.citation | Heidarzadeh, N., Mehdi Rafizadeh, M., Faramarz Afshar Taromi, F., del Valle, LJ., Franco, M., Puiggali, J. Thermal degradation of random copolyesters based on 1,4-butanediol, terepthalic acid and different aliphatic dicarboxylic acids. "Thermochimica acta", 10 Agost 2017, vol. 654, p. 101-111. |
dc.identifier.issn | 0040-6031 |
dc.identifier.uri | http://hdl.handle.net/2117/106210 |
dc.description.abstract | Thermal stability and degradation kinetics have been studied for a series of aliphatic-aromatic copolyesters where the terephthalate content was varied between 30 mol-% and 70 mol-%. Succinate, adipate and sebacate were considered as the aliphatic dicarboxylate unit. All copolyesters were synthesized with a perfect random distribution by a thermal transesterification process from the corresponding homopolyesters. A complex degradation was deduced for all copolymers taking into account the increment of the activation energy with conversion. In fact, thermogravimetric curves showed a minor decomposition process in the low conversion region that was more significant for the succinate derivative and specifically for that having the lowest aromatic content. The sebacate derivative was characterized by the presence of an additional and minor decomposition process that took place at the highest conversion. All copolyesters were defined by a major decomposition process, which has similar values of activation energy regardless of the method used to calculate them (e.g. Kissinger, KAS or Friedman methodologies). This decomposition reaction followed a A4 Avrami-Erofeev mechanism when Coats-Redfern and Criado methodologies were applied. In summary, all the studied copolymers thermally decompose following a complex process but in all cases the main degradation step corresponds to a similar degradation mechanism. |
dc.format.extent | 11 p. |
dc.language.iso | eng |
dc.subject | Àrees temàtiques de la UPC::Enginyeria química |
dc.subject.lcsh | Terephthalic acid |
dc.subject.lcsh | Succinic acid |
dc.subject.lcsh | Polymers--Biodegradation |
dc.subject.other | Biodegradable polymers |
dc.subject.other | Aliphatic-aromatic copolyesters |
dc.subject.other | Terephthalic acid |
dc.subject.other | Succinic acid |
dc.subject.other | Sebacic acid |
dc.subject.other | Thermal degradation kinetics |
dc.subject.other | Isoconversional methods |
dc.subject.other | Thermal degradation mechanism |
dc.title | Thermal degradation of random copolyesters based on 1,4-butanediol, terepthalic acid and different aliphatic dicarboxylic acids |
dc.type | Article |
dc.subject.lemac | Polímers -- Biodegradació |
dc.subject.lemac | Àcids |
dc.contributor.group | Universitat Politècnica de Catalunya. PSEP - Polimers Sintètics: Estructura i Propietats. Polimers Biodegradables |
dc.identifier.doi | 10.1016/j.tca.2017.05.011 |
dc.relation.publisherversion | http://www.sciencedirect.com/science/article/pii/S0040603117301260 |
dc.rights.access | Open Access |
local.identifier.drac | 21091900 |
dc.description.version | Postprint (author's final draft) |
local.citation.author | Heidarzadeh, N.; Mehdi Rafizadeh, M.; Faramarz Afshar Taromi, F.; del Valle, LJ.; Franco, M.; Puiggali, J. |
local.citation.publicationName | Thermochimica acta |
local.citation.volume | 654 |
local.citation.startingPage | 101 |
local.citation.endingPage | 111 |
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