What question did this study set out to answer?

To develop catalyst-free vitrimers using the transamination of vinylogous urethanes as a dynamic exchange mechanism for recyclable, cross-linked polymer networks.

March 13, 2015Advanced Functional MaterialsOpen Access

Vinylogous Urethane Vitrimers

View Full Paper

Ask AI

Bookmark

Authors

WDWim DenissenGhent University GRGuadalupe RiveroConsejo Nacional de Investigaciones Científicas y Técnicas RNRenaud NicolaÿCentre National de la Recherche Scientifique

Discussion

Member takes

Implication

Experimental study demonstrates catalyst-free transamination in vinylogous urethane vitrimers, indicating a viable pathway for highly recyclable and thermally stable thermoset plastics.

Key Points

To develop catalyst-free vitrimers using the transamination of vinylogous urethanes as a dynamic exchange mechanism for recyclable, cross-linked polymer networks.
Assessed exchange kinetics and side reactions of vinylogous urethane transamination using model small-molecule compounds.
Synthesized poly(vinylogous urethane) networks through bulk polymerization of cyclohexane dimethanol bisacetoacetate, m-xylylene diamine, and tris(2-aminoethyl)amine.
Characterized dynamic properties and reprocessability using solubility, creep, stress-relaxation tests, and four sequential grinding/compression molding cycles.
Synthesized poly(vinylogous urethane) networks achieved a storage modulus of approximately 2.4 GPa and a glass transition temperature above 80 °C.
Stress-relaxation experiments demonstrated catalyst-free exchange dynamics with relaxation times as fast as 85 s at 170 °C.
Polymer networks retained mechanical and chemical integrity through four consecutive grinding and compression molding recycling cycles.

Cite This Study

Denissen et al. (2015) studied this question.

synapsesocial.com/papers/69d81d348c03fbaff8bedd0d https://doi.org/10.1002/adfm.201404553

View Full Paper

Ask AI

Bookmark

Implication

Experimental study demonstrates catalyst-free transamination in vinylogous urethane vitrimers, indicating a viable pathway for highly recyclable and thermally stable thermoset plastics.

Vinylogous Urethane Vitrimers

Discussion

Member takes

Implication

Key Points

Cite This Study

Vinylogous Urethane Vitrimers

Discussion

Member takes

Implication

Key Points

Cite This Study

Also Consider

Also Consider