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首页> 外文期刊>Journal of Applied Polymer Science >Anew route of cross-linking ofcarboxylated acrylonitrile-butadienerubber viazinc oxide-amino acid network formation
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Anew route of cross-linking ofcarboxylated acrylonitrile-butadienerubber viazinc oxide-amino acid network formation

机译：重组羧基化丙烯腈 - 丁二酸二苯基氨基甲酸氨基氨基酸网形成的交联途径

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摘要

Herein, we present a strategy that leads to the formation of a high-performance elastomeric material based on the carboxylated acrylonitrile-butadiene rubber (XNBR). A unique cross-linking route for XNBR has been designed, which does not involve typical cross-linking agents such as sulfur. In this study, the show cause-effect of zwitterionic compounds as the secondary cross-linking agent for ionic elastomer has been investigated. Naturally occurring lysine (Ly) and tryptophan (Trp) amino acid are the zwitterionic compounds, which have been explored here. This approach results in the formation of a cross-linked ionic elastomer that houses a dual ionic network structure formed by zinc oxide (ZnO) and amino acid. XNBR cross-linked by ZnO and different amino acid compounds exhibit superior physical properties as compared to the conventional cross-linking system. Fourier transform infrared spectroscopy, transmission electron microscope, and swelling study analyzes confirm the existence of zinc-carboxylate and zwitterionic network in XNBR after the cross-linking process. The dynamic mechanical analysis, differential scanning calorimetry, and oscillating disk rheometer analyzes show various thermal relaxations and transitions present in the dual cross-linked XNBR. The ZnO and amino acid cross-linked XNBR rubber with 2.5 phr of Ly and 5 phr of Trp show the highest tensile strength of 42.4 and 39.7 MPa, respectively, which is mostly higher than the previously reported values for ionic cross-linked elastomers.
机译：在此，我们提出了一种基于羧基化丙烯腈-丁二烯橡胶（XNBR）的高性能弹性体材料的形成策略。设计了一种独特的XNBR交联路线，该路线不涉及硫等典型交联剂。本文研究了两性离子化合物作为离子弹性体二次交联剂的显因效应。天然存在的赖氨酸（Ly）和色氨酸（Trp）氨基酸是两性离子化合物，本文对此进行了探索。这种方法的结果是形成交联离子弹性体，其中包含由氧化锌（ZnO）和氨基酸形成的双离子网络结构。与传统交联体系相比，由ZnO和不同氨基酸化合物交联的XNBR具有优越的物理性能。傅立叶变换红外光谱、透射电子显微镜和溶胀研究分析证实交联过程后XNBR中存在羧酸锌和两性离子网络。动态力学分析、差示扫描量热法和振荡圆盘流变仪分析表明，双交联XNBR中存在各种热松弛和转变。含2.5份Ly和5份Trp的ZnO和氨基酸交联XNBR橡胶的最高拉伸强度分别为42.4和39.7 MPa，大部分高于之前报道的离子交联弹性体的值。

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