Viscoelastic properties of telechelic ionomers. 2. Quaternized α,ι-bis(dimethylamino)polyisoprene

Autor:	Paulette Charlier, Robert Jérôme, L. A. Utracki, Philippe Teyssie
Rok vydání:	1992
Předmět:	Telechelic polymer Materials science Polymers and Plastics Organic Chemistry Relaxation (NMR) Ionic bonding Dynamic mechanical analysis Viscoelasticity Inorganic Chemistry chemistry.chemical_compound chemistry Dynamic modulus Polymer chemistry Materials Chemistry Glass transition Ionomer
Zdroj:	Macromolecules. 25:617-624
ISSN:	1520-5835 0024-9297
DOI:	10.1021/ma00028a021
Popis:	Quaternization of the dimethylamino end groups of a short-length polyisoprene(M n = 5000) by a series of n-alkyl iodides deeply affected thedynamic mechanical behaviour. The T g of polyisoprene and the storage modulus in the glassy state were largely dependent on the length of the n-alkyl group. Furthermore, as a result of the quaternization a rubbery plateau emerged in the isochronous curves of G' vs temperature. An ionic relaxation peak was also displayed by the thermal dependence of the loss modulus.
Databáze:	OpenAIRE
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