Mostra el registre d'ítem simple

dc.contributorMartínez de Ilarduya Sáez de Asteasu, Domingo Antxon
dc.contributor.authorAscanio Nuñez, Yanireth
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Química
dc.date.accessioned2013-11-25T19:16:34Z
dc.date.available2013-11-25T19:16:34Z
dc.date.issued2013-02
dc.identifier.urihttp://hdl.handle.net/2099.1/19815
dc.description.abstractPoly(ethylene terephthalate) has experienced a growth in its demand as a bottle container and food packaging material. However, in order to expand its uses, its barrier properties to gases like carbon dioxide and oxygen, have to be improved. In this way, bisester amide units have been introduced as a third component in the main chain of PET, with the aim to reduce both CO2 and O2 permeability. In this project, poly(ester-amide)s based on PET (PETxMXy) have been synthesized, according to the following method:  First bisester amide was obtained and purified from dimethyl adipate and m-xylylene diamine (MXDA).  Then, bisester amide was added finalizing the transesterificación step in the synthesis of PET in different amounts from 0 to 20 mol%. PETxMXy were obtained with high yields, molecular weights (Mw) between 35,000-50,000 g mol-1 and dispersities between 2.3-3.3. All PETxMXy were semicrystalline, although it was observed a reduction on both melting enthalpy and temperature (Tm) as well as in the glass transition temperature (Tg) with the increased content of bisester amide units in the poly(ester-amide).The effect of the presence of the bisester amide units on the barrier properties of PET to CO2 and O2 are currently under research.
dc.language.isoeng
dc.publisherUniversitat Politècnica de Catalunya
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subjectÀrees temàtiques de la UPC::Enginyeria dels materials::Assaig de materials
dc.subjectÀrees temàtiques de la UPC::Enginyeria dels materials::Materials plàstics i polímers
dc.subject.lcshPolyethylene
dc.subject.lcshGases -- Filtration
dc.subject.lcshPermeability
dc.subject.lcshFilters and filtering
dc.titlePoly(ester-amide)s derived from PET containing uniform bisester amide segments
dc.title.alternativePoly(ester-amide)s derived from PET containing uniform bisester amide segments
dc.typeMaster thesis
dc.subject.lemacPolietilè
dc.subject.lemacGasos -- Filtració
dc.subject.lemacPermeabilitat
dc.subject.lemacFiltres i filtració
dc.rights.accessOpen Access
dc.audience.educationlevelMàster
dc.audience.mediatorEscola Tècnica Superior d'Enginyeria Industrial de Barcelona


Fitxers d'aquest items

Thumbnail

Aquest ítem apareix a les col·leccions següents

Mostra el registre d'ítem simple

Llevat que s'hi indiqui el contrari, els continguts d'aquesta obra estan subjectes a la llicència de Creative Commons: Reconeixement-NoComercial-SenseObraDerivada 3.0 Espanya