Turning Rubber into a Glass: Mechanical Reinforcement by Microphase Separation

Martin  Tress; Sirui  Ge; Kunyue  Xing; Peng-Fei  Cao; Tomonori  Saito; Anne-Caroline  Genix; Alexei P.  Sokolov

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Turning Rubber into a Glass: Mechanical Reinforcement by Microphase Separation

机译：将橡胶转入玻璃：通过微相分离机械加固

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Supramolecular associations provide a promising route to functional materials with properties such as self-healing, easy recyclability or extraordinary mechanical strength and toughness. The latter benefit especially from the transient character of the formed network, which enables dissipation of energy as well as regeneration of the internal structures. However, recent investigations revealed intrinsic limitations in the achievable mechanical enhancement. This manuscript presents studies of a set of telechelic polymers with hydrogen-bonding chain ends exhibiting an extraordinarily high, almost glass-like, rubbery plateau. This is ascribed to the segregation of the associative ends into clusters and formation of an interfacial layer surrounding these clusters. An approach adopted from the field of polymer nanocomposites provides a quantitative description of the data and reveals the strongly altered mechanical properties of the polymer in the interfacial layer. These results demonstrate how employing phase separating dynamic bonds can lead to the creation of high-performance materials.

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《ACS Macro Letters》 |2021年第2期|共6页
作者
Martin Tress; Sirui Ge; Kunyue Xing; Peng-Fei Cao; Tomonori Saito; Anne-Caroline Genix; Alexei P. Sokolov;
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作者单位

University of Tennessee;

University of Tennessee;

University of Tennessee;

Oak Ridge National Laboratory Chemical Sciences Division;

Oak Ridge National Laboratory Chemical Sciences Division;

Laboratoire Charles Coulomb (L2C) Université de Montpellier CNRS;

University of Tennessee;

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正文语种 eng
中图分类有机化学;
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机译：机械分离回收铝和玻璃的现状

Turning Rubber into a Glass: Mechanical Reinforcement by Microphase Separation

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