[2018-Vol.15-Issue 3]Enhanced Adhesion of Mussel-inspired Adhesive through Manipulating Contents of Dopamine Methacrylamide and Molecular Weight of Polymer
Time: 2018-05-12 21:17  Click:368
Journal of Bionic Engineering
 
Volume 15, Issue 2, May  2018, Pages 461-470.
 
Xiong Xiong1,2, Yumei Liu3,4, Feng Shi4, Guowei Zhang1, Jie Weng1, Shuxin Qu1*
1. Key Lab of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
2. School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
3. College of Environmental Science and Engineering, China West Normal University, Nanchong 637009, China
4. Collaboration Innovation Center for Tissue Repair Material Engineering Technology, China West Normal University, Nanchong 637009, China
 
Abstract  The aim of this study is to investigate the effect of the contents of modified 3, 4-dihydroxyphenyl-L-alanine (DOPA), named as do-pamine methacrylamide (DMA), on the adhesion of mussel-inspired adhesives in air and water. A series of adhesives, p(DMA-co-MEA), were synthesized by copolymerized DMA and methoxy ethylacrylate (MEA) with the content of DMA from 2 mol.% to 10 mol.%. Results of 1H NMR show that the contents of DMA in all adhesives are near to the theory ratios of DMA in the staring reagents. Adhe-sives with more than 5 mol.% of DMA appear adhesion, while adhesives with 2 mol. % and 3 mol. % of DMA show almost no adhesion in air and water. Adhesive with 7 mol.% of DMA has the highest molecular weight and adhesion either in air or in water in all adhesives. Adhesion of adhesive is synergistically influenced by the content of DMA, molecular weight and elastic modulus of adhesive. It is because that higher content of DMA would provide more DOPA, which leads to the coordination bond between DOPA and metal ions. It is feasible to develop the mussel-inspired adhesive through incorporating DMA into polymers, which will have potential application in the clinic.
 
Key words: mussel-inspired      adhesive      adhesion      dopamine methacrylamide     

Full text is available at https://link.springer.com/article/10.1007/s42235-018-0037-5

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