PVC/PBA random copolymers prepared by Living Radical Polymerization (SET–DTLRP): Entanglements and chain dimensions

Autor:	Jose Ignacio Conde, Belén Pascual, M. Boix, Anton Santamaría, María Eugenia Muñoz, Itxaso Calafel
Rok vydání:	2015
Předmět:	Materials science Polymers and Plastics Organic Chemistry Radical polymerization General Physics and Astronomy Modulus Thermodynamics Chain transfer Composition (combinatorics) Plateau (mathematics) Viscoelasticity Chain (algebraic topology) Polymer chemistry Materials Chemistry Copolymer
Zdroj:	European Polymer Journal. 73:202-211
ISSN:	0014-3057
DOI:	10.1016/j.eurpolymj.2015.10.013
Popis:	For the first time PVC–PBA random copolymers were prepared by Single Electron Transfer–Degenerative Chain Transfer Living Radical Polymerization giving rise to homogeneous chains, in terms of PVC/PBA proportion. Dynamic viscoelastic measurements in the terminal zone allowed evaluating the entanglement plateau modulus value, G N 0 , for each composition. An equation based on a model that correlates G N 0 to melt chain dimensions was used to fit the variation of G N 0 with PBA concentration. Correspondingly, the entanglements number, the characteristic ratio and the packing length values of each copolymer were obtained. As a corollary, the characteristic ratio of PBA, never reported before, was also evaluated.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::eca8e20de77bfbe2a7bb5654b2cc090c https://doi.org/10.1016/j.eurpolymj.2015.10.013 Zobrazit plný text záznamu Full Text from ScienceDirect