Mussel-inspired cellulose-based adhesive with biocompatibility and strong mechanical strength via metal coordination.
Inspired by marine mussel, catechol-containing materials, such as adhesives, self-healing hydrogels, and antifouling coatings, have been developed with wide applications in chemical, biomedical, and electronics industries. Conventionally, petrochemicals or organic solvents are widely used for preparation and dissolution of adhesives, which makes the adhesives are not eco-friendly and biocompatible. To develop environmentally friendly and biocompatible adhesives with desired properties, here we report catechol-containing cellulose-based tissue adhesives, synthesized by incorporating catechol groups onto cellulose. The structures of the adhesives with different catechol contents were analyzed by UV-vis spectroscopy, Fourier transform infrared spectroscopy (FTIR) and nuclear magnetic resonance (1H NMR) spectroscopy. The adhesion strengths were examined using porcine skin by lap shear tensile tests. The adhesion strength of the as-prepared adhesive with catechol content of 16.5 mol% was 20.0 kPa. Fe3+ was used as crosslinker to enhance the adhesion strength and accelerate the solidification of adhesives. Through the Fe3+-catechol coordination, the adhesion strength of adhesive was increased to 88.0 kPa, showing strong mechanical strength compared to the fibrin adhesive. NIH 3T3 cells test demonstrates that the adhesive is favorable for cell attachment and proliferation, possessing excellent biocompatibility. The catechol-containing cellulose-based adhesive has promising application in bioengineering field.
['Tang|Zuwu|Z|', 'Zhao|Mengchan|M|', 'Wang|Yu|Y|', 'Zhang|Wenling|W|', 'Zhang|Min|M|', 'Xiao|He|H|', 'Huang|Liulian|L|', 'Chen|Lihui|L|', 'Ouyang|Xinhua|X|', 'Zeng|Hongbo|H|', 'Wu|Hui|H|']
D000818:Animals D001672:Biocompatible Materials D032701:Biomimetics D049872:Bivalvia D002396:Catechols D002470:Cell Survival D002482:Cellulose D008422:Materials Testing D008670:Metals D051379:Mice D041681:NIH 3T3 Cells D013552:Swine D013818:Thermogravimetry D014014:Tissue Adhesives
Adhesive Biocompatibility Catechol Cellulose