Open Access
ARTICLE
Bio-Inspired Gelatin-Based Adhesive Modified with Waterborne Polyurethane on Click Chemistry
Xuechuan Wang1,2, Wenying Zhao1,2, Xugang Dang1,2,*, Yiqing Wang1,2, Huijie Zhang1,2,*
1
College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, Xi’an, 710021, China
2
National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi University of Science and
Technology, Xi’an, 710021, China
* Corresponding Authors: Xugang Dang. Email: ; Huijie Zhang. Email:
Journal of Renewable Materials 2022, 10(11), 2747-2763. https://doi.org/10.32604/jrm.2022.021555
Received 20 January 2022; Accepted 09 March 2022; Issue published 29 June 2022
Abstract
As a non-toxic, highly reactive biomass material, gelatin is wildly used as the component of biomass-based adhesive. However, like most aqueous adhesives, gelatin-based adhesives suffer from long solidifying time or high solidifying temperature due to the low volatility of water, which highly limits the application potential of gelatinbased adhesives. Inspired by the fast adhesion of marine organisms through the formation of chemical crosslinks,
herein, a kind of low temperature curable eco-friendly gelatin-based adhesive with good adhesive properties and
fast curing at low temperature is developed by introducing clicking chemical Diels-Alder (DA) reaction between
blocked waterborne polyurethane (MWPU) and gelatin. The furfuryl glycidyl ether (FGE) and 4-Maleimidophenol (4-HPM) for the DA reaction are grafted on gelatin, and the end-capping of MWPU, respectively. With the
addition of MWPU and FGE, the cross-linking degree of gelatin increased, and the adhesion properties of the
adhesive were improved. The shear strength and T-peel strength of the modified adhesive reached 0.95 MPa
and 1.42 N/mm, respectively, after the curing time of 8 min at 40°C, which can meet the application requirements
as adhesive for bio-medical use.
Graphical Abstract
Keywords
Cite This Article
Wang, X., Zhao, W., Dang, X., Wang, Y., Zhang, H. (2022). Bio-Inspired Gelatin-Based Adhesive Modified with Waterborne Polyurethane on Click Chemistry.
Journal of Renewable Materials, 10(11), 2747–2763. https://doi.org/10.32604/jrm.2022.021555