DSpace DSpace UPC
 Català   Castellano   English  

E-prints UPC >
Altres >
Enviament des de DRAC >

Empreu aquest identificador per citar o enllaçar aquest ítem: http://hdl.handle.net/2117/6181

Arxiu Descripció MidaFormat
Poly(ethylene-co.pdf549,45 kBAdobe PDFThumbnail
Veure/Obrir

Citació: González, N.; Martinez de Ilarduya, A.; Muñoz, S. Poly(ethylene-co-1,4-cyclohexylenedimethylene terephthalate) copolyesters obtained by ring opening polymerization. "Journal of polymer science. Part A, polymer chemistry", 15 Novembre 2009, vol. 47, núm. 22, p. 5954-5966.
Títol: Poly(ethylene-co-1,4-cyclohexylenedimethylene terephthalate) copolyesters obtained by ring opening polymerization
Autor: González Vidal, Nathalie; Martínez de Ilarduya Sáez de Asteasu, Domingo Antxon Veure Producció científica UPC; Muñoz Guerra, Sebastián Veure Producció científica UPC
Data: 15-nov-2009
Tipus de document: Article
Resum: Cyclic oligomer fractions of ethylene terephthalate c(ET)n and 1,4-cyclohexylenedimethylene terephthalate c(CT)n were obtained by yclodepolymerization of their respective polyesters, the former containing around 80 mol % of trimer and the latter with around 70 mol % of trimer to pentamer. Mixtures of these fractions at selected compositions were subjected to ring opening copolymerization to give a series of poly(ethylene-co-cyclohexylenedimethylene terephthalate) copolyesters with ET/CT comonomer ratios ranging from 90/10 to 10/90. The copolyesters were characterized by GPC and NMR, and their thermal properties were evaluated by DSC and TGA. They had essentially the same composition as the feed from which they were produced and had an average-weight molecular weights between 30,000 and 40,000 g/mol with polydispersities between 2 and 2.7. The distribution of the monomeric units in these copolyesters was essentially at random although it evolved to be a blocky microstructure as the contents in the two comonomers became more dissimilar. Their thermal behavior was the expected one for these types of copolyesters with crystallinity and heating stability decreasing with the content in CT units.
ISSN: 0887-624X
URI: http://hdl.handle.net/2117/6181
DOI: 10.1002/pola
Versió de l'editor: http://www3.interscience.wiley.com/journal/122616164/issue
Apareix a les col·leccions:POL - Polímers. Articles de revista
Departament d'Enginyeria Química. Articles de revista
Altres. Enviament des de DRAC
Comparteix:


Stats Mostra les estadístiques d'aquest ítem

SFX Query

Tots els drets reservats. Aquesta obra està protegida pels drets de propietat intel·lectual i industrial corresponents. Sense perjudici de les exempcions legals existents, queda prohibida la seva reproducció, distribució, comunicació pública o transformació sense l'autorització del titular dels drets.

Per a qualsevol ús que se'n vulgui fer no previst a la llei, dirigiu-vos a: sepi.bupc@upc.edu

 

Valid XHTML 1.0! Programari DSpace Copyright © 2002-2004 MIT and Hewlett-Packard Comentaris
Universitat Politècnica de Catalunya. Servei de Biblioteques, Publicacions i Arxius