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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

Thermoreversibly crosslinked poly(ε-caprolactone) as recyclable shape-memory polymer network.

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Macromolecular rapid communications - 17 Aug 2011

Defize T, Riva R, Raquez JM, Dubois P, Jérôme C, Alexandre M,

Link to Pubmed [PMID] – 21692124

Link to DOI – 10.1002/marc.201100250

Macromol Rapid Commun 2011 Aug; 32(16): 1264-9

A new concept to build shape memory polymers (SMP) combining outstanding fixity and recovery ratios (both above 99% after only one training cycle) typical of chemically crosslinked SMPs with reprocessability restricted to physically crosslinked SMPs is demonstrated by covalently bonding, through thermoreversible Diels-Alder (DA) adducts, star-shaped poly(ε-caprolactones) (PCL) end-functionalized by furan and maleimide moieties. A PCL network is easily prepared by melt-blending complementary end-functional star polymers in retro DA regime, then by curing at lower temperature to favour the DA cycloaddition. Such covalent network can be reprocessed when heated again at the retro DA temperature. The resulting SMP shows still excellent shape memory properties attesting for its good recyclability.

https://pubmed.ncbi.nlm.nih.gov/21692124