Cation-Dipole Interaction-Induced Coacervate Underwater Adhesives in Natural Seawater

IF 4.1 2区化学 Q2 POLYMER SCIENCE

Chinese Journal of Polymer Science Pub Date : 2024-05-17 DOI:10.1007/s10118-024-3141-5

Xu-Fei Liu, Chong-Rui Zhang, Hua-Wen Peng, Qiang Zhao

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引用次数: 0

Abstract

Significant progress has been made in wet adhesives for low salinity water, but exploration of general ionic adhesives for natural seawater is less developed because the high salinity could weaken interfacial bonding and shields electrostatic interactions, resulting in adhesion failure. Thus, the design of adhesives for natural seawater represents challenges less resolved. Herein, a cationic polyelectrolyte (PECHIA) containing imidazolacetonitrile unit was explored to prepare adhesives enabled by natural seawater. By combining the ion shielding effect with the “cation-dipole” interactions between PECHIA chains, aqueous solution of the PECHIA underwent coacervation and self-crosslinking in natural seawater, allowing for underwater adhesion to various substrates in seawater. The instantaneous lap-shear and tensile adhesion strengths are 47 and 119 kPa, respectively, while the cured adhesive shows ∼739 kPa tensile adhesion in natural seawater. The design of PECHIA enables wet adhesives viable for applications in the diversified scenarios of natural seawater.

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天然海水中阳离子-偶极相互作用诱导的共凝水下粘合剂

用于低盐度水的湿粘合剂已取得重大进展，但用于天然海水的普通离子粘合剂的探索却不太成熟，因为高盐度会削弱界面键合和屏蔽静电相互作用，导致粘合失败。因此，为天然海水设计粘合剂是一项尚未解决的挑战。在此，我们探索了一种含有咪唑乙腈单元的阳离子聚电解质（PECHIA）来制备天然海水中的粘合剂。通过将离子屏蔽效应与 PECHIA 链之间的 "阳离子-偶极 "相互作用相结合，PECHIA 的水溶液在天然海水中发生了共凝和自交联，从而可以在海水中实现与各种基底的水下粘合。瞬时搭接剪切强度和拉伸粘附强度分别为 47 kPa 和 119 kPa，固化后的粘合剂在天然海水中的拉伸粘附力为 739 kPa。PECHIA 的设计使湿式粘合剂能够应用于天然海水的各种情况。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Chinese Journal of Polymer Science 化学-高分子科学

CiteScore

7.10

自引率

11.60%

发文量

218

审稿时长

6.0 months

期刊介绍： Chinese Journal of Polymer Science (CJPS) is a monthly journal published in English and sponsored by the Chinese Chemical Society and the Institute of Chemistry, Chinese Academy of Sciences. CJPS is edited by a distinguished Editorial Board headed by Professor Qi-Feng Zhou and supported by an International Advisory Board in which many famous active polymer scientists all over the world are included. The journal was first published in 1983 under the title Polymer Communications and has the current name since 1985. CJPS is a peer-reviewed journal dedicated to the timely publication of original research ideas and results in the field of polymer science. The issues may carry regular papers, rapid communications and notes as well as feature articles. As a leading polymer journal in China published in English, CJPS reflects the new achievements obtained in various laboratories of China, CJPS also includes papers submitted by scientists of different countries and regions outside of China, reflecting the international nature of the journal.