A robust, storable, and controllable cold-set protein adhesive enabled by Pickering emulsion-templated microcapsules

IF 6.9 2区综合性期刊 Q1 CHEMISTRY, MULTIDISCIPLINARY

Cell Reports Physical Science Pub Date : 2024-11-01 DOI:10.1016/j.xcrp.2024.102266

Zhiqiang Zhu, Menghan Li, Youhui Huang, Jiayi Zhang, Nairong Chen, Li Feng

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引用次数: 1

Abstract

Summary

Cold-set protein adhesives (CPAs) show great advantages in sustainability, eco-friendliness, and cost effectiveness but suffer from weak adhesion and poor storability as imposed by the difficulty in controlling molecular crosslinks. Here, we develop a robust, storable, and controllable CPA enabled by Pickering emulsion-templated microcapsules (PETMs). The PETMs are synthesized by leveraging highly reactive isocyanates as the core phase for cold-set adhesion, and cellulose nanofibers are densified by polyurea as a shell phase to present a responsive, adjustable, and stable nature. Also, inorganic magnesium oxide (MgO) binders are introduced to further strengthen CPA via MgO-protein complexation. Our design not only enables superior cold-set adhesion (0.98 MPa to wood) induced by pressure but also imparts the adhesive with much-improved storability (high-strength maintenance at inferior conditions). This strategy resolves the conflict between high reactivity and long storability in cold-set adhesion, offering a promising direction for the development of high-performance bio-based adhesives satisfying practical demands.

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一种坚固的，可储存的，可控的冷凝蛋白粘合剂，由皮克林乳液模板微胶囊实现

冷固蛋白胶粘剂在可持续性、生态友好性和成本效益方面具有很大的优势，但由于难以控制分子交联，冷固蛋白胶粘剂的附着力较弱，储存性较差。在这里，我们开发了一个强大的，可存储的，可控的CPA由皮克林乳液模板微胶囊（petm）实现。petm是通过利用高活性的异氰酸酯作为核心相来合成的，用于冷固粘附，而纤维素纳米纤维是通过聚脲作为壳相来致密化的，以呈现响应性、可调性和稳定性。同时，引入无机氧化镁（MgO）结合剂，通过MgO-蛋白络合进一步强化CPA。我们的设计不仅可以实现由压力引起的优越的冷固附着力（对木材的0.98 MPa），而且还赋予粘合剂更强的可储存性（在恶劣条件下保持高强度）。该策略解决了冷固粘接中高反应性与长储存性的矛盾，为开发满足实际需求的高性能生物基胶粘剂提供了一个有希望的方向。

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来源期刊

Cell Reports Physical Science Energy-Energy (all)

CiteScore

11.40

自引率

2.20%

发文量

388

审稿时长

62 days

期刊介绍： Cell Reports Physical Science, a premium open-access journal from Cell Press, features high-quality, cutting-edge research spanning the physical sciences. It serves as an open forum fostering collaboration among physical scientists while championing open science principles. Published works must signify significant advancements in fundamental insight or technological applications within fields such as chemistry, physics, materials science, energy science, engineering, and related interdisciplinary studies. In addition to longer articles, the journal considers impactful short-form reports and short reviews covering recent literature in emerging fields. Continually adapting to the evolving open science landscape, the journal reviews its policies to align with community consensus and best practices.