Effect of Regioisomerism on Processability and Mechanical Properties of Amine/Urea Exchange Based Poly(urea-urethane) Vitrimers

被引：27

作者：

Erice, Ainara ^{[1
]}

Azcune, Itxaso ^{[1
]}

Ruiz de Luzuriaga, Alaitz ^{[1
]}

Ruiperez, Fernando ^{[2
]}

Irigoyen, Mikel ^{[2
]}

Mattin Matxain, Jon ^{[3
,4
]}

Maria Asua, Jose ^{[2
]}

Grande, Hans-Jurgen ^{[1
,2
]}

Rekondo, Alaitz ^{[1
]}

机构：

[1] CIDETEC, Polymers & Composites, Paseo Miramon 196, Donostia San Sebastian 20014, Spain

[2] Univ Basque Country, UPV EHU, POLYMAT, Joxe Mari Korta Ctr, Avda Tolosa 72, Donostia San Sebastian 20018, Spain

[3] Euskal Herriko Unibertsitatea, UPV EHU, Kim Fac, PK 1072, Donostia San Sebastian 20080, Spain

[4] DIPC, PK 1072, Donostia San Sebastian 20080, Spain

来源：

ACS APPLIED POLYMER MATERIALS | 2019年 / 1卷 / 09期

关键词：

dynamic covalent chemistry; reversible covalent bond; vitrimers; CAN; poly(urea-urethane) elastomer; regioisomerism; COVALENT ADAPTABLE NETWORKS; HYDROGEN-BONDING PROPERTIES; SHAPE-MEMORY POLYURETHANE; EPOXY VITRIMERS; CATALYST; POLY(URETHANE-UREA); REPROCESSABILITY; SYSTEMS;

D O I：

10.1021/acsapm.9b00589

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this paper, three analogous poly(urea-urethane) elastomers were thoroughly characterized to determine the effect of regioisomerism on the processability and mechanical properties of the final materials. The polymers were synthesized starting from the same isocyanate-terminated polyol and the three positional isomers of phenylenediamine hardener. The main differences on the supramolecular hydrogen-bond network, as well as on the outcome of the dynamic amine/urea exchange reaction, were determined by experimental measurements (FTIR, rheology, DMA, tensile tests) and molecular quantum chemical calculations.

引用

页码：2472 / 2481

页数：19

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