TY - JOUR
T1 - Instant and Strong Underwater Adhesion by Coupling Hygroscopicity and in Situ Photocuring
AU - Zhou, Yongsen
AU - Zhang, Chao
AU - Gao, Shouwei
AU - Zhang, Baoping
AU - Sun, Jing
AU - Kai, Ji Jung
AU - Wang, Bing
AU - Wang, Zuankai
N1 - Funding Information:
The authors acknowledge the financial support from the National Natural Science Foundation of China (no. 51975502) and Research Grants Council of Hong Kong (no. C1006-20WF, CityU No. 11213320, CityU No. 11201020).
Publisher Copyright:
© 2021 American Chemical Society.
PY - 2021/11/23
Y1 - 2021/11/23
N2 - Designing underwater adhesives with short bonding time yet strong adhesion is in pressing demand in many applications such as underwater construction and medical healthcare. However, shortening the bonding time normally leads to premature bonding and thus weak adhesion. Such trade-off becomes more pronounced in the presence of interfacial water, which disrupts adhesive-adherend interactions. The adverse influence of interfacial water on adhesion can be alleviated by various dehydrating strategies; however, attaining high adhesion within a short bonding time still remains a challenge. Here, we present a facile approach that resolves this challenge by embedding a photoreactive monomer into a hygroscopic matrix. This engineered photocurable adhesive instantly absorbs the interfacial water and solidifies upon in situ photocuring (IPC), allowing for the construction of strong adhesive-adherend interactions and bulk cohesion within 10 s. The hygroscopic adhesive with significantly reduced bonding time demonstrates an impressive underwater adhesion strength up to 7.6 MPa, surpassing the state-of-the-art performances. The synergy of efficient adsorption of interfacial water with the IPC strategy could open new opportunities for the development of high-performance underwater adhesives.
AB - Designing underwater adhesives with short bonding time yet strong adhesion is in pressing demand in many applications such as underwater construction and medical healthcare. However, shortening the bonding time normally leads to premature bonding and thus weak adhesion. Such trade-off becomes more pronounced in the presence of interfacial water, which disrupts adhesive-adherend interactions. The adverse influence of interfacial water on adhesion can be alleviated by various dehydrating strategies; however, attaining high adhesion within a short bonding time still remains a challenge. Here, we present a facile approach that resolves this challenge by embedding a photoreactive monomer into a hygroscopic matrix. This engineered photocurable adhesive instantly absorbs the interfacial water and solidifies upon in situ photocuring (IPC), allowing for the construction of strong adhesive-adherend interactions and bulk cohesion within 10 s. The hygroscopic adhesive with significantly reduced bonding time demonstrates an impressive underwater adhesion strength up to 7.6 MPa, surpassing the state-of-the-art performances. The synergy of efficient adsorption of interfacial water with the IPC strategy could open new opportunities for the development of high-performance underwater adhesives.
UR - http://www.scopus.com/inward/record.url?scp=85119911515&partnerID=8YFLogxK
U2 - 10.1021/acs.chemmater.1c03007
DO - 10.1021/acs.chemmater.1c03007
M3 - Journal article
AN - SCOPUS:85119911515
SN - 0897-4756
VL - 33
SP - 8822
EP - 8830
JO - Chemistry of Materials
JF - Chemistry of Materials
IS - 22
ER -