Activated Phenyl Ester Vitrimers DOI
Stéphanie Engelen, Bram Daelman, Johan M. Winne

et al.

Macromolecular Rapid Communications, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 13, 2024

Aromatic esters are amongst the oldest known chemical motifs that allow for thermal (re)processing of thermosetting polymers. Moreover, phenyl generally as activated do not require a catalyst to undergo acyl transfer reactions. Even though dynamic aromatic find applications in commercialized thermoset formulations, all-aromatic have found limited use so far design covalent adaptable networks (CAN) result their high glass transition temperature (T

Language: Английский

Structure–Property Relationships of Elastomeric Vinylogous Urethane Thermosets and Their Application as Closed-Loop Recyclable Strain Sensors DOI Creative Commons
Youwei Ma, Francesco Stellacci

Macromolecules, Journal Year: 2025, Volume and Issue: 58(4), P. 1923 - 1934

Published: Feb. 5, 2025

Developing closed-loop recyclable thermosets and understanding their structure–property relationships are essential steps in advancing a circular materials economy. Here, we present vinylogous urethane (VU) thermoset with recyclability, synthesized through the reaction of polytetrahydrofuran bisacetoacetate (aPTHF) tris(2-aminoethyl)amine (TREN). These VU polymers exhibit high elasticity, only 3–9% residual strain observed after cyclic tensile testing at maximum 100%, depending on molecular weight aPTHF network cross-link density. The two structural parameters also allow modulation mechanical stress-relaxation properties elastomers. To investigate hydrolysis linkages within hydrophobic matrix, employed heterogeneous system using biphasic mixture HCl CDCl3. Our findings show that VUs remain stable pure water but can be dissociated under acidic conditions, dissociation rate accelerated higher temperatures and/or presence concentrations. detailed investigations indicate potential elastomers as sustainable substrates for wearable sensors. We therefore conduct case study synthesizing sensor incorporation multiwalled carbon nanotubes (MCNs) into elastomer matrix. robustly detect various movements. Moreover, treatment both neat polymer composite diethyl ether solvent allows excellent recovery (>90%) TREN (86%), without discernible damage to MCNs reclaimed from latter.

Language: Английский

Citations

2
Biodegradability of poly(ester-thioether)s containing chiral biomass via a Michael-type thiol-ene click reaction DOI Creative Commons

Ryota Imamura,

Akinori Takasu

RSC Advances, Journal Year: 2025, Volume and Issue: 15(15), P. 12001 - 12008

Published: Jan. 1, 2025

We prepared poly(ester-thioether)s containing dianhydrosugar and tartaric acid units via Michael-type thiol-ene click polymerization.

Language: Английский

Citations

0
Closed-loop recylcing of thermoset poly(vinylogous urethane) foams DOI

Shihao Ji,

Linlin Wang,

Shengyu Feng

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: unknown, P. 158174 - 158174

Published: Nov. 1, 2024

Language: Английский

Citations

1
Activated Phenyl Ester Vitrimers DOI
Stéphanie Engelen, Bram Daelman, Johan M. Winne

et al.

Macromolecular Rapid Communications, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 13, 2024

Aromatic esters are amongst the oldest known chemical motifs that allow for thermal (re)processing of thermosetting polymers. Moreover, phenyl generally as activated do not require a catalyst to undergo acyl transfer reactions. Even though dynamic aromatic find applications in commercialized thermoset formulations, all-aromatic have found limited use so far design covalent adaptable networks (CAN) result their high glass transition temperature (T

Language: Английский

Citations

0