Tough Double-Network Gels and Elastomers from the Nonprestretched First Network,ACS Macro Letters

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Tough Double-Network Gels and Elastomers from the Nonprestretched First Network
ACS Macro Letters ( IF 5.1 ) Pub Date : 2019-10-08 , DOI: 10.1021/acsmacrolett.9b00679
Tasuku Nakajima _{1,

2,

3} , Yuhei Ozaki ₄ , Ryo Namba ₄ , Kumi Ota ₄ , Yuki Maida ₄ , Takahiro Matsuda ₁ , Takayuki Kurokawa _{1,

2} , Jian Ping Gong _{1,

2,

3}

Affiliation

Double-network (DN) gels and elastomers, which consist of two (or more) rubbery polymer networks with contrasting physical properties, have received significant attention as they are extremely tough soft materials. The first network of tough DN materials should be more brittle and weaker than the second network. In this paper, we re-examined the structural requirements of the covalently cross-linked first network of tough DN materials and established a nonprestretching strategy. While prestretching of network strands has been considered necessary for the preparation of the brittle and weak first network, we found that a nonprestretched network having a short strand length and low strand density can be used as the brittle and weak first network for preparation of both tough DN gels and elastomers. This work can further expand the chemical and mechanical diversity of DN materials.

中文翻译：

来自非预拉伸第一网络的坚韧双网络凝胶和弹性体

双网络 (DN) 凝胶和弹性体由两个（或多个）具有对比物理特性的橡胶状聚合物网络组成，由于它们是极其坚韧的软材料，因此受到了极大的关注。坚韧的 DN 材料的第一个网络应该比第二个网络更脆和更弱。在本文中，我们重新审视了共价交联的坚韧 DN 材料第一网络的结构要求，并建立了非预拉伸策略。虽然网络股的预拉伸被认为是制备脆性和弱第一网络所必需的，但我们发现具有短链长度和低股密度的非预拉伸网络可以用作脆性和弱第一网络以制备两种韧性DN 凝胶和弹性体。

更新日期：2019-10-08

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