Dual-primer adhesion of polymer networks of dissimilar chemistries

Cheng，Sibo1,2; Yang，Canhui2,3; Yang，Xuxu2,4; Suo，Zhigang2

2020-07-01

10.1016/j.eml.2020.100756

Extreme Mechanics Letters   影响因子和分区

2352-4316

2352-4316

The integration of polymer networks of dissimilar chemistries, such as hydrogels and hydrophobic elastomers, has enabled numerous existing and emerging applications in engineering and medicine. However, it remains a challenge to adhere polymer networks of dissimilar chemistries when neither network contains functional groups for chemical coupling. Here we describe a principle of dual-primer adhesion that meets this challenge. For each preformed network, we formulate a primer with uncrosslinked polymers that (1) match the chemistry of the preformed network, and (2) contain coupling agents for crosslinks and interlinks. We apply the primer on the surface of the preformed network, place two primed networks in contact, and cure. Each primer crosslinks into a network, in topological entanglement with the one preformed network, and the two primer networks form interlinks. The stitch-bond-stitch topology covalently adheres the two preformed networks. We demonstrate the principle by using polydimethylsiloxane elastomer, polyacrylamide hydrogel, and silane coupling agents. Adhesion energy as high as ∼140 J/m is achieved, comparable to the toughness of the polyacrylamide hydrogel. The principle of dual-primer adhesion opens an enormous design space for general applications.

Adhesion Dual-primer Elastomer Hydrogel

SCI ; EI

英语

其他

NSF MRSEC, United States[DMR 14-20570] ; National Science Foundation, United States[ECS 1541959] ; Southern University of Science and Technology, PR China[G02386301][G02326001]

Engineering ; Materials Science ; Mechanics

Engineering, Mechanical ; Materials Science, Multidisciplinary ; Mechanics

WOS:000542164200007

ELSEVIER

20201908619034

Crosslinking ; Silicones ; Elastomers ; Coupling agents ; Plastics ; Adhesion ; Topology

Colloid Chemistry:801.3 ; Chemical Reactions:802.2 ; Chemical Agents and Basic Industrial Chemicals:803 ; Chemical Products Generally:804 ; Organic Polymers:815.1.1 ; Polymer Products:817.1 ; Elastomers:818.2 ; Combinatorial Mathematics, Includes Graph Theory, Set Theory:921.4 ; Materials Science:951

2-s2.0-85084184567

Scopus

1.International Center for Applied Mechanics,State Key Laboratory for Strength and Vibration of Mechanical Structures,School of Aerospace Engineering,Xi'an Jiaotong University,Shaanxi,Xi'an,710049,China
2.School of Engineering and Applied Sciences,Kavli Institute for Bionano Science and Technology,Harvard University,Cambridge,02138,United States
3.Department of Mechanics and Aerospace Engineering,Southern University of Science and Technology,Guangdong,Shenzhen,518055,China
4.State Key Laboratory of Fluid Power and Mechatronic System,Key Laboratory of Soft Machines and Smart Devices of Zhejiang Province,and Department of Engineering Mechanics,Zhejiang University,Hangzhou,310027,China

Cheng，Sibo,Yang，Canhui,Yang，Xuxu,et al. Dual-primer adhesion of polymer networks of dissimilar chemistries[J]. Extreme Mechanics Letters,2020,38.

Cheng，Sibo,Yang，Canhui,Yang，Xuxu,&Suo，Zhigang.(2020).Dual-primer adhesion of polymer networks of dissimilar chemistries.Extreme Mechanics Letters,38.

Cheng，Sibo,et al."Dual-primer adhesion of polymer networks of dissimilar chemistries".Extreme Mechanics Letters 38(2020).