期刊
ACS APPLIED BIO MATERIALS
卷 4, 期 2, 页码 1360-1368出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsabm.0c01245
关键词
adhesive; catechol; mussel inspired; acrylated epoxidized soybean oil; light cured
资金
- National Science Foundation of China [51603223]
A mussel-inspired adhesive was synthesized through a one-step esterification reaction, utilizing both double bonds and catechol moieties to achieve short curing time and high bonding strength. It can be used as an underwater adhesive, with shorter curing time and stronger bonding strength compared to conventional agents. Its synthesis from low-cost renewable resources in one step makes it a potential candidate for large-scale practical applications.
The development of functional materials based on renewable resources is of great significance in today's resource shortage. Here, we present an effective way to synthesize a mussel-inspired adhesive from acrylated epoxidized soybean oil (AESO), a renewable and commercially available small molecular material with a molecular weight around 1200 Da, by a one-step esterification reaction with the affordable 3,4-dihydroxybenzoic acid (DHA). By taking advantages of both the double bond and the catechol moiety presented in this small molecular adhesive, a short curing time was achieved with UV irradiation. An average bonding strength around 1.4 MPa at a curing time of only around 10 min on a glass substrate was observed, which reached 3.1 MPa (average 2.8 MPa) at a curing time of 2 h under ambient conditions. The curing time is much shorter, and the bonding strength is obviously stronger than the conditions where conventional oxidation agents such as IO4- or oxidation/coordination agents such as Fe3+ are used as the curing agent. Furthermore, the AESO-g-DHA can be used as an underwater adhesive, and an appreciable bonding strength up to 0.64 MPa was observed, which is superior than most of currently known commercialized glues. Given that the adhesive could be synthesized from low-cost renewable resources in one step, it might be a potential candidate for large-scale practical application.
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