Folic Acid-Based Coacervate Leading to a Double-Sided Tape for Adhesion of Diverse Wet and Dry Substrates.
Folic Acid-Based Coacervate Leading to a Double-Sided Tape for Adhesion of Diverse Wet and Dry Substrates.
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DOI：
10.1021/acsami.1c06844
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发表时间：
2021-07
影响因子：
9.5
通讯作者：
Shuitao Gao;Wenkai Wang;Tongyue Wu;Shasha Jiang;Jinwan Qi;Zhiyang Zhu;Bin Zhang;Jianbin Huang;Yun Yan
中科院分区：
文献类型：
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作者：
Shuitao Gao;Wenkai Wang;Tongyue Wu;Shasha Jiang;Jinwan Qi;Zhiyang Zhu;Bin Zhang;Jianbin Huang;Yun Yan
粘合剂在自然界和多样化的人工领域中都至关重要，开发经济且环保的粘合剂仍然是一个巨大的挑战。我们报告说，基于叶酸的凝聚层可以成为一种新型的优秀粘合剂，适用于各种具有持久粘合性的表面。在π-π堆叠的叶酸四联体和聚阳离子之间的静电相互作用的帮助下，所得凝聚层能够通过多价氢键、配位和静电相互作用与多样化的基质相互作用。对木材的粘合力优于强效商业胶水，但不会释放任何有毒成分。水蒸发后，凝聚层可流延成非粘性柔性自支撑膜，其在与水接触时立即恢复粘性凝聚层原有的粘合能力。这样，凝聚层可以很容易地制成双面胶带（DST），便于在环境条件下储存和使用。叶酸基DST具有优异的粘合性能、无毒气体释放、储存和使用方便等优点，是一种非常有前途的新型粘合材料。
Adhesives are crucial both in nature and in diversified artificial fields, and developing environment-friendly adhesives with economic procedures remains a great challenge. We report that folic acid-based coacervates can be a new category of excellent adhesives for all kinds of surfaces with long-lasting adhesiveness. Aided by the electrostatic interaction between the π-π stacked folic acid quartets and polycations, the resultant coacervates are able to interact with diversified substrates via a polyvalent hydrogen bond, coordination, and electrostatic interactions. The adhesivity to wood is superior to the strong commercial glues, but without releasing any toxic components. Upon evaporating water, the coacervate can be casted into a non-adhesive flexible self-supporting film, which restores the adhesive coacervate immediately on contacting water with original adhesive ability. In this way, the coacervate can be facilely tailored into a double-sided tape (DST), which is convenient for storage and application under ambient conditions. Given its excellent adhesive performance, release of nontoxic gases, and convenience in storage and application, the folic acid-based DST is very promising as a new adhesive material.