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© A-M. Pais-Correia, M-I. Thoulouze, A. Alcover, A. Gessain
Mise en évidence de structures de type "biofilm ", formées par le rétrovirus HTLV-1 générés par des cellules infectées (cellules du haut), qui ont été transmis à un autre lymphocyte (cellule du bas). Micrographie en microscopie électronique à balayage. Image colorisée.
Publication : Macromolecular rapid communications

Reversible TAD Chemistry as a Convenient Tool for the Design of (Re)processable PCL-Based Shape-Memory Materials.

Team: Oncogenic Virus Epidemiology and Pathophysiology
Team: Virus and Immunity
Member: Isma Ziani
Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Macromolecular rapid communications - 01 Jan 2017

Defize T, Riva R, Thomassin JM, Alexandre M, Herck NV, Prez FD, Jérôme C,

Link to Pubmed [PMID] – 27805739

Link to DOI – 10.1002/marc.201600517

Macromol Rapid Commun 2017 Jan; 38(1):

A chemically cross-linked but remarkably (re)processable shape-memory polymer (SMP) is designed by cross-linking poly(ε-caprolactone) (PCL) stars via the efficient triazolinedione click chemistry, based on the very fast and reversible Alder-ene reaction of 1,2,4-triazoline-3,5-dione (TAD) with indole compounds. Typically, a six-arm star-shaped PCL functionalized by indole moieties at the chain ends is melt-blended with a bisfunctional TAD, directly resulting in a cross-linked PCL-based SMP without the need of post-curing treatment. As demonstrated by the stress relaxation measurement, the labile character of the TAD-indole adducts under stress allows for the solid-state plasticity reprocessing of the permanent shape at will by compression molding of the raw cross-linked material, while keeping excellent shape-memory properties.