Chemical control of the viscoelastic properties of vinylogous urethane vitrimers

被引：432

作者：

Denissen, Wim ^{[1
,2
]}

Droesbeke, Martijn ^{[1
,2
]}

Nicolay, Renaud ^{[3
]}

Leibler, Ludwik ^{[3
]}

Winne, Johan M. ^{[1
,2
]}

Du Prez, Filip E. ^{[1
,2
]}

机构：

[1] Univ Ghent, Polymer Chem Res Grp, Dept Organ & Macromol Chem, Krijgslaan 281 S4 Bis, B-9000 Ghent, Belgium

[2] Univ Ghent, Organ Synth Lab, Krijgslaan 281 S4 Bis, B-9000 Ghent, Belgium

[3] ESPCI ParisTech, UMR CNRS ESPCI 7167, Mat Molle & Chim, 10 Rue Vauquelin, F-75005 Paris, France

来源：

NATURE COMMUNICATIONS | 2017年 / 8卷

关键词：

COVALENT ADAPTABLE NETWORKS; POLYMER NETWORKS; RUBBER; BONDS;

D O I：

10.1038/ncomms14857

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Vinylogous urethane based vitrimers are polymer networks that have the intrinsic property to undergo network rearrangements, stress relaxation and viscoelastic flow, mediated by rapid addition/elimination reactions of free chain end amines. Here we show that the covalent exchange kinetics significantly can be influenced by combination with various simple additives. As anticipated, the exchange reactions on network level can be further accelerated using either Brønsted or Lewis acid additives. Remarkably, however, a strong inhibitory effect is observed when a base is added to the polymer matrix. These effects have been mechanistically rationalized, guided by low-molecular weight kinetic model experiments. Thus, vitrimer elastomer materials can be rationally designed to display a wide range of viscoelastic properties. © The Author(s) 2017.

引用

页数：7

共 28 条

[1] Covalent Adaptable Networks: Reversible Bond Structures Incorporated in Polymer Networks [J].

Bowman, Christopher N. ;

Kloxin, Christopher J. .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2012, 51 (18) :4272-4274

[2] Polylactide Vitrimers [J].

Brutman, Jacob P. ;

Delgado, Paula A. ;

Hillmyer, Marc A. .

ACS MACRO LETTERS, 2014, 3 (07) :607-610

[3] Self-Healing Materials Based on Disulfide Links [J].

Canadell, Judit ;

Goossens, Han ;

Klumperman, Bert .

MACROMOLECULES, 2011, 44 (08) :2536-2541

[4] Catalytic Control of the Vitrimer Glass Transition [J].

Capelot, Mathieu ;

Unterlass, Miriam M. ;

Tournilhac, Francois ;

Leibler, Ludwik .

ACS MACRO LETTERS, 2012, 1 (07) :789-792

[5] Metal-Catalyzed Transesterification for Healing and Assembling of Thermosets [J].

Capelot, Mathieu ;

Montarnal, Damien ;

Tournilhac, Francois ;

Leibler, Ludwik .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2012, 134 (18) :7664-7667

[6] Room-Temperature Self-Healing Polymers Based on Dynamic-Covalent Boronic Esters [J].

Cash, Jessica J. ;

Kubo, Tomohiro ;

Bapat, Abhijeet P. ;

Sumerlin, Brent S. .

MACROMOLECULES, 2015, 48 (07) :2098-2106

[7] Self-healing and thermoreversible rubber from supramolecular assembly [J].

Cordier, Philippe ;

Tournilhac, Francois ;

Soulie-Ziakovic, Corinne ;

Leibler, Ludwik .

NATURE, 2008, 451 (7181) :977-980

[8] Malleable and Self-Healing Covalent Polymer Networks through Tunable Dynamic Boronic Ester Bonds [J].

Cromwell, Olivia R. ;

Chung, Jaeyoon ;

Guan, Zhibin .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2015, 137 (20) :6492-6495

[9] Vitrimers: permanent organic networks with glass-like fluidity [J].

Denissen, Wim ;

Winne, Johan M. ;

Du Prez, Filip E. .

CHEMICAL SCIENCE, 2016, 7 (01) :30-38

[10] Vinylogous Urethane Vitrimers [J].

Denissen, Wim ;

Rivero, Guadalupe ;

Nicolay, Renaud ;

Leibler, Ludwik ;

Winne, Johan M. ;

Du Prez, Filip E. .

ADVANCED FUNCTIONAL MATERIALS, 2015, 25 (16) :2451-2457

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