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Phase segregation in supramolecular polymers based on telechelics synthesized via multicomponent reactions
- Macromolecular Chemistry and Physics. - 2017, vol. 218, no. 22, p. 1700302
The properties of supramolecular polymers in the solid state are strongly dependent on the binding strength of the supramolecular motifs used; however, It has been previously shown that the nanostructure of supramolecular polymers plays an equally important role. Supramolecular polymers are commonly synthesized via end-group functionalization of low-glass transition telechelics with supramolecular units. In these systems, the binding motifs segregate from the soft telechelic backbone and form a hydrogen bonded crystalline hard phase that provides physical cross-links. To date, the reported synthetic approaches do not permit the introduction of a wide variety of supramolecular units with low synthetic effort, which would facilitate studying the structure-property relationships. The use of the Passerini and Ugi multicomponent reactions to synthesize various poly(ethylene-co-butylene) telechelics with diverse amide end-groups is reported. The thermal properties of the supramolecular polymers obtained through their solid-state assembly are investigated and their nanophase- segregation is studied, which is dictated by the end-group volume fraction and the amide–amide hydrogen bonding.
- Faculté des sciences et de médecine
- AMI - Physique de la matière molle
- mei_pss.pdf: 14
- mei_pss_sm.pdf: 11